市面上的鑽石其顏色可分為2個類別: 無色至淺黃(褐、灰)色鑽石系列、彩色鑽石系列。根據國際公認的4C標準，第一個C所指的即是顏色(COLOUR)是釐定鑽石價格的其中一項重要準則。 There are 2 main groups of colour for diamonds: 1) Colourless to light yellow (brownish or greyish) diamonds; 2) coloured diamonds. Colour is the first C of the internationally known 4C standard. It is also one of the main factors in deciding the value of a diamond. 市面上的钻石其颜色可分为2个类别:无色至浅黄(褐、灰)色钻石系列、彩色钻石系列。根据国际公认的4C标准，第一个C所指的即是颜色(COLOUR)是厘定钻石价格的其中一项重要准则。

甚麼是鑽石的顏色級別? 這主要是對無色、無色帶淺黃、淺褐或淺灰色調鑽石的顏色分級。無色、透明的鑽石，其顏色一般被稱為白；無色且不帶任何色調的鑽石極為珍罕，光線折射效果最好、閃爍度特別高，價格亦相對最高。而色調愈深，顏色級別就愈低。 What does colour mean for a diamond? It is a colour grading method for those diamonds that are colourless, light yellowish, light brownish and light greyish. Colourless and transparent diamonds are generally considered as white. They are very rare and have the best reflection of light and generate the best luster. They are also the most expensive ones. The darker and less transparent the diamonds, the lower the colour grade. 什么是钻石的颜色级别?这主要是对无色、无色带浅黄、浅褐或浅灰色调钻石的颜色分级。无色、透明的钻石，其颜色一般被称为白；无色且不带任何色调的钻石极为珍罕，光线折射效果最好、闪烁度特别高，价格亦相对最高。而色调愈深，颜色级别就愈低。

在鑽石的分級制中，最高級別的是D色，然後是E、F、G、H、I、J、K、L、M、N、O、P、Q、R、S、T、U、V、Z。在鑽石市場中，級別愈低的鑽石、其價格亦愈低。 In diamond colour grading, the highest grade is D, followed by E, F, G, H, I, J, K, L, M, N, O, P, Q, R, S, T, U, V, and Z. The lower the colour grade, the lower the price of a diamond. 在钻石的分级制中，最高级别的是D色，然后是E、F、G、H、I、J、K、L、M、N、O、P、Q、R、S、T、U、 V、Z。在钻石市场中，级别愈低的钻石、其价格亦愈低。

無色鑽石(COLOURLESS) = D、E、F (COLOURLESS) = D、E、F 无色钻石(COLOURLESS) = D、E、F

近乎無色(NEAR COLOURLESS) = G、H、I、J (NEAR COLOURLESS) = G、H、I、J 近乎无色(NEAR COLOURLESS) = G、H、I、J

淡黃色(FAINT YELLOW) = K、L、M (FAINT YELLOW) = K、L、M 淡黄色(FAINT YELLOW) = K、L、M

少許帶黃至淺黃色(VERY LIGHT YELLOW) = N 至 Z (VERY LIGHT YELLOW) = N to Z 少许带黄至浅黄色(VERY LIGHT YELLOW) = N至Z

鑽石的車工包括切割比例和打磨度，車工的級別由高至低可分為極好(EXCELLENT)、很好(VERY GOOD)、良好(GOOD)、一般(FAIR)及差(POOR)，車工理想的鑽石，使光線完全從鑽石正面反射出來，如果車工角度不良，光線會從底部或側面流失，影響鑽石的閃爍度和亮度。 A good cut of a diamond depends on the proportion of the cut and the level of polishing. The grading of cut ranges from Excellent, Very Good, Good, Fair, and Poor. A good cut on a diamond would enable a perfect reflection of light. A poor cut will yield less light reflection and result in a loss of luster and brightness. 钻石的车工包括切割比例和打磨度，车工的级别由高至低可分为极好(EXCELLENT)、很好(VERY GOOD)、良好(GOOD)、一般(FAIR)及差(POOR)，车工理想的钻石，使光线完全从钻石正面反射出来，如果车工角度不良，光线会从底部或侧面流失，影响钻石的闪烁度和亮度。

一般具有極好車工的鑽石，其價格比次一級的切割的高10-20%。除標準的圓形切割外，常用的還有隋圓形、祖母綠形、梨形、公主方形、心形、橄欖形等。選購鑽石，車工通常要在極好或很好以上。 There is generally a 10-20% price differential between a cut grade. There is a large variety of the shapes of cut. Round, Emerald, Pear, Princess, Heart and Marquise Brilliant are some examples. We recommend a cut grade of Excellent to Very Good when choosing a diamond. 一般具有极好车工的钻石，其价格比次一级的切割的高10-20%。除标准的圆形切割外，常用的还有隋圆形、祖母绿形、梨形、公主方形、心形、橄榄形等。选购钻石，车工通常要在极好或很好以上。

極好(EXCELLENT)的車工 EXCELLENT 极好(EXCELLENT)的车工

幾乎可以將所有光線反射出來，確保鑽石的閃爍度及亮度最為出眾。 The cut allows the maximum reflection of light and enables the diamond to have the best luster and brightness. 几乎可以将所有光线反射出来，确保钻石的闪烁度及亮度最为出众。

很好(VERY GOOD)的車工 VERY GOOD 很好(VERY GOOD)的车工

反射光線的效果與極好(EXCELLENT)的車工十分接近，一般未經訓練的肉眼較難區分兩者的分別，就算是行內的專業人士亦有時難於分辨。 The reflection of light is very close to Excellent. It is difficult to differentiate between an Excellent and a Very Good cut by untrained eyes. Even professionals in the industry may find it difficult to tell the difference at times. 反射光线的效果与极好(EXCELLENT)的车工十分接近，一般未经训练的肉眼较难区分两者的分别，就算是行内的专业人士亦有时难于分辨。

良好(GOOD)的車工 GOOD 良好(GOOD)的车工

有效反射出進入鑽石內的大部份光線。 This cut allows the majority of the light reflected. 有效反射出进入钻石内的大部份光线。

一般(FAIR)的車工 FAIR 一般(FAIR)的车工

仍然屬於優質的鑽石，但一般車工的鑽石其閃爍度不如良好車工的鑽石。消費者如欲保證鑽石長遠的價值，應盡量避免選購這個或以下級別的鑽石。 This cut of diamond is still considered as good. But the amount of light reflection and the luster and brightness it generates is less compared with the grade Good. For customers that look for diamonds as a store of value, we recommend them not to purchase diamonds at this grade of cut and below. 仍然属于优质的钻石，但一般车工的钻石其闪烁度不如良好车工的钻石。消费者如欲保证钻石长远的价值，应尽量避免选购这个或以下级别的钻石。

差(POOR)的車工 POOR 差(POOR)的车工

切割比例不良，冠部與底部的比例或是過深或過淺，引致進入的光線流失，不能充分被反射，減低閃爍度。 The proportion of this cut grade is out of balance. The ratio between the crown and the base is either too deep or too shallow. This would lower the rate of light reflection and leads to a loss in luster and brightness. 切割比例不良，冠部与底部的比例或是过深或过浅，引致进入的光线流失，不能充分被反射，减低闪烁度。

鑽石的淨度是根據10倍放大鏡下所能見的鑽石內含物的位置、大小和數量的不同來劃分鑽石的淨度級別。鑽石在誕生時歷經高溫高壓，因此而產生內含物及外部瑕疵，一般是肉眼所不能見，需經放大鏡放大才能得見，其等級可劃分為: Clarity grade is defined by the quantity, size and position of the inclusions and blemishes visible under a 10x magnifying glass. Diamonds are created under extremely high heat and pressure conditions and the inclusions and blemishes are normally not easily identifiable by the naked eye. Clarity has the following grades: 钻石的净度是根据10倍放大镜下所能见的钻石内含物的位置、大小和数量的不同来划分钻石的净度级别。钻石在诞生时历经高温高压，因此而产生内含物及外部瑕疵，一般是肉眼所不能见，需经放大镜放大才能得见，其等级可划分为:

完美無瑕(FL)及內裏無瑕(IF) Flawless(FL) and Internal Flawless(IF) 完美无瑕(FL)及内里无瑕(IF)

FL等級的鑽石在10倍放大鏡下檢測不出任何的內含物或外部瑕疵，極為罕有；而IF等級的鑽石則看不出有內含物，亦屬十分罕有。 FL diamonds have no inclusions or blemishes visible under 10x magnification. IF diamonds have no inclusions visible under the same magnification. FL等级的钻石在10倍放大镜下检测不出任何的内含物或外部瑕疵，极为罕有；而IF等级的钻石则看不出有内含物，亦属十分罕有。

含極少瑕疵(VVS1 / VVS2) VVS1 / VVS2 含极少瑕疵(VVS1 / VVS2)

10倍放大鏡放大，鑽石的內含物及外部瑕疵仍然難以得見。 Diamonds have minute inclusions and blemishes that are difficult to see under 10x magnification. 经10倍放大镜放大，钻石的内含物及外部瑕疵仍然难以得见。

有很少瑕疵(VS1 / VS2) VS1 / VS2 有很少瑕疵(VS1 / VS2)

如經10倍放大鏡放大，鑽石的內含物及外部瑕疵可被檢測，但仍非肉眼所能輕易看見。 Diamonds have minor inclusions and blemishes that are identifiable under 10x magnification. But it is still not easily visible with naked eye. 如经10倍放大镜放大，钻石的内含物及外部瑕疵可被检测，但仍非肉眼所能轻易看见。

少有瑕疵(SI1 / SI2) SI1 / SI2 少有瑕疵(SI1 / SI2)

鑽石的內含物及外部瑕疵經10倍放大鏡放大，清昕能見，而肉眼亦可輕易看見。 Diamonds have noticeable inclusions and blemishes under 10x magnification. These are also noticeable to the naked eye. 钻石的内含物及外部瑕疵经10倍放大镜放大，清昕能见，而肉眼亦可轻易看见。

重瑕疵(I1 / I2 / I3) I1 / I2 / I3 重瑕疵(I1 / I2 / I3)

無需使用10倍放大鏡，單憑肉眼已經可以輕易發現鑽石的內含物及外部瑕疵。 Diamonds have obvious inclusions and blemishes that are visible to the naked eye. 无需使用10倍放大镜，单凭肉眼已经可以轻易发现钻石的内含物及外部瑕疵。

鑽石的對稱度以瓣面的切割對稱性為檢測標準，如瓣面嚴重不對稱，不但可能出現底尖(Culet)偏移(Off Center)，更可令鑽石外型歪歪斜斜，外觀不良；更能令折光表現欠佳，致使閃爍度減低的情形出現。 The symmetry of a diamond is measured by the symmetry observed on the facets. Cutlet off center will result if the facets show asymmetry. Asymmetry diamonds will also look irregular and reduce the aesthetic value. Additionally, asymmetry also reduces the effect of light reflection and causes loss in luster. 钻石的对称度以瓣面的切割对称性为检测标准，如瓣面严重不对称，不但可能出现底尖(Culet)偏移(Off Center)，更可令钻石外型歪歪斜斜，外观不良；更能令折光表现欠佳，致使闪烁度减低的情形出现。

在紫外光照射之下，有些白鑽會透現出輕微的螢光，呈現淡藍或淡紫的光線，一般輕度的螢光難以被肉眼察覺，而且如鑽石本身帶輕微的黃色，螢光更可帶來平衡偏黃的意想不到的效果，提升鑽石外觀的價值。 Some white diamonds will show a hint of fluorescence light blue or light purple colours under UV lights. These fluorescence lights are not easily detectable by the naked eye. If the diamond itself has a slight yellowish colour, the fluorescence effect will bring a parallel pale yellowish tone to the diamond and that could be valuing enhancing to your stone. 在紫外光照射之下，有些白钻会透现出轻微的萤光，呈现淡蓝或淡紫的光线，一般轻度的萤光难以被肉眼察觉，而且如钻石本身带轻微的黄色，萤光更可带来平衡偏黄的意想不到的效果，提升钻石外观的价值。

如果鑽石的螢光特性太強，在日常的光線下鑽石則會變得較暗及不夠通透，選購鑽石時要多加注意。 However, a diamond with too powerful fluorescence character will make it looks darker and less transparent under normal lights. 如果钻石的萤光特性太强，在日常的光线下钻石则会变得较暗及不够通透，选购钻石时要多加注意。

鑽石拋光的細緻度愈高，其打磨效果則愈好，能有效提昇反射光線的表現，令鑽石更光彩動人；如鑽石打磨效果粗劣，則會留下難看的刮痕，而且更會令鑽石顯得暗啞失去光澤。 The finer the polishing means the better the ability of light reflection. The luster of a diamond is enhanced by a fine polishing. Conversely, poor polishing will leave scratches on the surface of the diamond and also reduce the luster of a diamond. 钻石抛光的细致度愈高，其打磨效果则愈好，能有效提升反射光线的表现，令钻石更光彩动人；如钻石打磨效果粗劣，则会留下难看的刮痕，而且更会令钻石显得暗哑失去光泽。

鑽石的拋光打磨度一般是以EX (EXCELLENT)、VG (VERY GOOD)、G (GOOD)、F (FAIR) 來劃分，鑽石有否留下拋光痕跡，以及鑽石的外表是否打磨光滑，是選購鑽石其中一項的重要考慮因素。 Polish grade is divided into EX (Excellent), VG (Very Good), and G (Good). Polishing is a big factor in choosing a good diamond. 钻石的抛光打磨度一般是以EX (EXCELLENT)、VG (VERY GOOD)、G (GOOD)、F (FAIR) 来划分，钻石有否留下抛光痕迹，以及钻石的外表是否打磨光滑，是选购钻石其中一项的重要考虑因素。

如要充分呈現鑽石蘊含的閃爍光華，首要確切評估其光學特性，再透過精準的計算、技師卓越的工藝，以及精密的機械加工，才能完美發掘鑽石的潛質。基於鑽石本身的質與量，綜合上述的條件要素，最後才決定鑽石的切割形狀。常見的形狀包括 : 圓形ROUND CUT、橄欖形MARQUISE BRILLIANT CUT、祖母綠形EMERALD CUT、梨形PEAR BRILLIANT CUT、橢圓形OVAL BRILLIANT CUT、上丁方形ASSCHER CUT、三角形TRILLIANT CUT、公主方形PRINCESS CUT、明亮形RADIANT CUT、墊形CUSHION CUT、盾形玫瑰CHIFFRE CUT及心形HEART SHAPE等多種切割方式。 To bring out the best quality and condition of an uncut and unpolished diamond would require a correct assessment of its optical properties, superior craftsmanship and the finest machine tools. These factors play critical role of the final shape of a diamond. The following are the more popular shapes/ cut: Round, Marquise, Emerald, Pear Brilliant, Oval Brilliant, Assher, Trilliant, Princess, Radiant, Cushion, Chiffre and Heart. 如要充分呈现钻石蕴含的闪烁光华，首要确切评估其光学特性，再透过精准的计算、技师卓越的工艺，以及精密的机械加工，才能完美发掘钻石的潜质。基于钻石本身的质与量，综合上述的条件要素，最后才决定钻石的切割形状。常见的形状包括:圆形ROUND CUT、橄榄形MARQUISE BRILLIANT CUT、祖母绿形EMERALD CUT、梨形PEAR BRILLIANT CUT、椭圆形OVAL BRILLIANT CUT、上丁方形ASSHER CUT、三角形TRILLIANT CUT、公主方形PRINCESS CUT、明亮形RADIANT CUT、垫形CUSHION CUT、盾形玫瑰CHIFFRE CUT及心形HEART SHAPE等多种切割方式。

亮形切割 RADIANT CUT RADIANT CUT 明亮形切割RADIANT CUT

由於明亮形鑽石的車工糅合了長方形和圓形鑽石的火光優點，雖然外形與祖母綠形有點相像，但是其閃爍度與火光較為卓越，其切割外形有利於提高鑽石的成色，所以是彩色鑽石的理想車工選擇。 Radiant cut combines the merits of both the rectangular and round cut. Radiant cut diamond looks similar to the Emerald cut ones but it has a superior luster and shine. This method of cut could improve the colour of a diamond and so is the ideal cut for coloured gemstones. 由于明亮形钻石的车工糅合了长方形和圆形钻石的火光优点，虽然外形与祖母绿形有点相像，但是其闪烁度与火光较为卓越，其切割外形有利于提高钻石的成色，所以是彩色钻石的理想车工选择。

圓形切割 ROUND CUT ROUND CUT 圆形切割ROUND CUT

這是最受歡迎的鑽石切割形狀，亦被稱為明亮圓形切割(ROUND BRILLIANT CUT)，對於切割工藝的要求亦是最為嚴格，切割的瓣面(FACETS)多達57至58瓣，能全大程度地折射出大部分的光線，經數學、物理學及光學的驗證為閃爍度及火光最佳的切割方式，效果遠遠優於其它形狀，是投資及婚戒的首選。 This is the most popular cut and also named Round Brilliant cut. This cut requires the best craftsmanship. The number of facets could reach 58 and so reflect a large amount of light. Round cut is the best cut among all, from a mathematics and physics angle, to generate the best luster and reflection. It is the ideal cut of diamond for wedding bands and investment purposes. 这是最受欢迎的钻石切割形状，亦被称为明亮圆形切割(ROUND BRILLIANT CUT)，对于切割工艺的要求亦是最为严格，切割的瓣面(FACETS)多达57至58瓣，能全大程度地折射出大部分的光线，经数学、物理学及光学的验证为闪烁度及火光最佳的切割方式，效果远远优于其它形状，是投资及婚戒的首选。

公主方形切割 PRINCESS CUT PRINCESS CUT 公主方形切割PRINCESS CUT

公主方形切割的鑽石，呈現頂部方形、底部尖角的外部形態。由於長度及闊度之差異，可以呈現出正方形甚或至矩形的形狀。由於公主方形切割的鑽石，其色點(光線聚集之部位)集中於尖角，所以選購公主方形切割的鑽石，應選擇高成色的等級。切工優良的公主方形鑽石，其火光及閃爍度出眾，與圓形切割不遑多讓，是投資及婚戒的理想之選。 Diamond with Princess cut has the shape of a square or a rectangle on the face-up and the side-on shape similar to an inverted pyramid. As light tends to concentrate on the chevrons of the Princess cut, it is better to choose Princess cut diamond with better colour. A good Princess cut square diamond has an outstanding luster and shine that is comparable to the Round cut ones. They are also an ideal cut for wedding bands and investment purposes. 公主方形切割的钻石，呈现顶部方形、底部尖角的外部形态。由于长度及阔度之差异，可以呈现出正方形甚或至矩形的形状。由于公主方形切割的钻石，其色点(光线聚集之部位)集中于尖角，所以选购公主方形切割的钻石，应选择高成色的等级。切工优良的公主方形钻石，其火光及闪烁度出众，与圆形切割不遑多让，是投资及婚戒的理想之选。

祖母綠形切割 EMERALD CUT RADIANT CUT 祖母绿形切割EMERALD CUT

祖母綠形的外形為長方形，在外觀上是經典的梯方形，感覺更為古典優雅，擁有大面積的平滑檯面，可以透視鑽石的底部，如果鑽石本身的質量未夠理想，鑽石的外部瑕疵、內含物及所含的成色，相對較易被肉眼發現。 Emerald cut diamonds are rectangular when view on top while a trapezium when viewed on the side. They yield a classic and elegant impression. With its big and flat facets, diamonds with an Emerald cut can been seen through more easily. Any blemishes, inclusions and even the colour of the diamond are more easily noticeable by the naked eye, if the diamond is not of top quality. 祖母绿形的外形为长方形，在外观上是经典的梯方形，感觉更为古典优雅，拥有大面积的平滑台面，可以透视钻石的底部，如果钻石本身的质量未够理想，钻石的外部瑕疵、内含物及所含的成色，相对较易被肉眼发现。

橄欖形切割 MARQUISE BRILLIANT CUT MARQUISE BRILLIANT CUT 橄榄形切割MARQUISE BRILLIANT CUT

橄欖形鑽石的兩端尖長，使鑽石的視覺效果看起來較實際為大，而且其產量較少，是比較稀有的鑽石，其切割方式以圓形明亮的車工為主。而鑽石本身的形狀較為修長，配戴後會令手指看起來更加纖幼。一般來說橄欖形鑽飾會在兩旁鑲以較細小的鑽石加以裝飾，增加其修長感。 Marquise Brilliant cut diamond is elongated and pointed on both ends and the cut makes the diamond looks larger visually. Marquise Brilliant cut diamonds are rare and limited in supply. The cutting method of the Marquise Brilliant is similar to the Round one. Because the shape of the diamond is elongated, it makes the fingers of the wearer looks more slender. Jewellery designers often put smaller diamonds on the sides of the Marquise Brilliant cut diamond Jewellery to improve the slenderness feel even more. 橄榄形钻石的两端尖长，使钻石的视觉效果看起来较实际为大，而且其产量较少，是比较稀有的钻石，其切割方式以圆形明亮的车工为主。而钻石本身的形状较为修长，配戴后会令手指看起来更加纤幼。一般来说橄榄形钻饰会在两旁镶以较细小的钻石加以装饰，增加其修长感。

橢圓形切割 OVAL BRILLIANT CUT OVAL BRILLIANT CUT 椭圆形切割OVAL BRILLIANT CUT

橢圓形鑽石的閃爍度與明亮形的圓鑽相類近，配戴效果令手指更感纖細幼長，但要注意其切割的準確度，否則容易出現誤差，產生極不美觀的雙蝴蝶結效果。 Oval Brilliant cut diamond has similar shine and luster compared with the Round cut ones. Yet it gives the finger of the wearer looks slender. The precision of the cut for Oval Brilliant cut diamond is very important as mistakes in the cut will cause the undesirable double bow effect (雙蝴蝶結效果). 椭圆形钻石的闪烁度与明亮形的圆钻相类近，配戴效果令手指更感纤细幼长，但要注意其切割的准确度，否则容易出现误差，产生极不美观的双蝴蝶结效果。

梨形切割 PEAR SHAPE CUT PEAR SHAPE CUT 梨形切割PEAR SHAPE CUT

上列之明亮形切割是結合方形與圓形之長，而梨形則是結合圓形及橄欖形鑽石之優點，光彩出眾。同樣以明亮形車工為主的梨形車工，外形高雅優美，仿似一顆垂下的水滴，躍現自然美感。 Radiant cut combines the merits of both the Rectangular and Round cut while Pear Shape cut combines the merits of both the Round cut and Marquise Brilliant cut. The cutting technique of the Pear Shape cut is based on the Radiant cut. The beautiful and elegant Pear Shape cut yields diamonds resemble water droplets, it exemplifies the beauty of nature. 上列之明亮形切割是结合方形与圆形之长，而梨形则是结合圆形及橄榄形钻石之优点，光彩出众。同样以明亮形车工为主的梨形车工，外形高雅优美，仿似一颗垂下的水滴，跃现自然美感。

墊形切割 CUSHION CUT CUSHION CUT 垫形切割CUSHION CUT

墊形鑽石的瓣面面積較大，閃爍度媲美明亮形圓鑽，火光明亮；但亦因瓣面較大而令外部瑕疵或內含物更易被察見。墊形切割鑽石的尖角被修圓，而顏色比較均勻，是彩色鑽石的理想切割方法之一。 Diamond with Cushion cut has larger facets. Its luster and shine can compare with Round cut diamond. However, the larger facets also mean inclusions and blemishes are more noticeable. The chevrons on Cushion cut diamond are polished to be more rounded to yield a more uniform colour. Cushion cut is one of the ideal cutting methods for coloured gemstones. 垫形钻石的瓣面面积较大，闪烁度媲美明亮形圆钻，火光明亮；但亦因瓣面较大而令外部瑕疵或内含物更易被察见。垫形切割钻石的尖角被修圆，而颜色比较均匀，是彩色钻石的理想切割方法之一。

心形切割 HEART SHAPE CUT HEART SHAPE CUT 心形切割HEART SHAPE CUT

心形鑽石象徵兩心相印、相近，是情侶選購對裝鑽飾的理想選擇；同樣是沿自明亮形切割方式的心形切割，由於本身的獨特造形，更講究對稱性以及弧度的精確性，加上其尖端處有聚光的效果，所以選購心形鑽石時首選成色更佳的鑽石，以免令配戴效果大打折扣。 Diamonds with Heart Shape cut symbolize heart to heart and are the ideal choice for lovers. Heart Shape cut is originated from Radiant cut. Heart Shape cut demands symmetry and precision in curves. The pointed edge of the Heart Shape cut is where light will converge and so a better colour and quality diamond for Heart Shape cut is preferred, or the visual impact will be much discounted. 心形钻石象征两心相印、相近，是情侣选购对装钻饰的理想选择；同样是沿自明亮形切割方式的心形切割，由于本身的独特造形，更讲究对称性以及弧度的精确性，加上其尖端处有聚光的效果，所以选购心形钻石时首选成色更佳的钻石，以免令配戴效果大打折扣。

上丁方形 ASSCHER CUT ASSCHER CUT 上丁方形ASSCHER CUT

上丁方形切割有如祖母綠切割，分別是前者是正方形而後者是梯形，而且閃爍度及火光更為卓越，形狀同樣優美典雅。由於其頂部的瓣面被切割成多個長方形的階梯式切割面，所以鑽石外圍的顏色較為突顯，因而選購上丁方形鑽石時應首選成色較佳的鑽石。 The Asscher cut diamonds are similar to Emerald cut ones. The main difference is the facets of an Emerald cut are squares or rectangles while the facets of an Asscher cut are trapezia. The shine and luster of the Asscher cut diamond is more outstanding while the shape is equally elegant. The crown of the diamond is step-cut into numerous facets, highlighting the colour from the periphery of the diamond. It is more preferable to choose better coloured and quality diamond for Asscher cut diamond. 上丁方形切割有如祖母绿切割，分别是前者是正方形而后者是梯形，而且闪烁度及火光更为卓越，形状同样优美典雅。由于其顶部的瓣面被切割成多个长方形的阶梯式切割面，所以钻石外围的颜色较为突显，因而选购上丁方形钻石时应首选成色较佳的钻石。

價值高昂的名貴寶石，外觀可能與質量一般的寶石極為相似，價格卻是天壤之別。為了鑑定寶石的品質、真偽、加工與否等因素，即使是專家也需出動先進的專業器材來進行檢測，一般消費者在選購寶石時若沒有證書之助，真的是難以放心購買。世界上有多家權威寶石認證機構，包括GIA、HRD、AGS、IGI它們所發出的寶石證書記錄了寶石的細節，而且更是受到世界每個角落的寶石業人士所認同，給予消費者最佳的信心保障。 The difference between valuable gemstones and average gemstones can be small from the untrained eye, yet their price gap can be huge. Gemstone experts would require the use of instruments, including professional ones, to ascertain the quality of gemstones. It is surely difficult enough for customers without professional training and the right equipment to have the peace of mind to buy valuable gemstones and jewellery. The introduction of a certification system by the internationally recognized gemology institutes gave a confidence boost to jewellery and gemstone buyers at the end user level. Institutions including GIA, HRD, AGS and IGI issue certificates for gemstones that recorded all the information of the gemstones. Such certificates provide quality assurance to consumers. 价值高昂的名贵宝石，外观可能与质量一般的宝石极为相似，价格却是天壤之别。为了鉴定宝石的品质、真伪、加工与否等因素，即使是专家也需出动先进的专业器材来进行检测，一般消费者在选购宝石时若没有证书之助，真的是难以放心购买。世界上有多家权威宝石认证机构，包括GIA、HRD、AGS、IGI它们所发出的宝石证书记录了宝石的细节，而且更是受到世界每个角落的宝石业人士所认同，给予消费者最佳的信心保障。

美國寶石學院 GIA CERTIFICATE GIA CERTIFICATE 美国宝石学院GIA CERTIFICATE

GIA全名為GEMOLOGICAL INSTITUTE OF AMERICA，於1931年在美國洛杉磯創立，是把鑽石鑑定證書國際化的創始者，所發出的證書最為業界所認受，具有極高的公信力。其證書共分3種類別，包括: 有色寶石鑑定證書、有色寶石分析證書及有色寶石原產地證書。GIA證書國際通用，一克拉以下的鑽石在腰線上都使用鐳射激光刻有GIA證書號碼，而一克拉以上則沒有嚴格規定需要刻上號碼與否。此外，只要登入GIA網站，更可即時查核證書的所有資料，因而能為鑽石的真偽及品質帶來信心保證。 Gemological Institute of America (GIA) was founded in 1931 in Los Angeles in the United States of America. GIA is the leader in pushing the internationalization of gemstone certification system. Reports issued by GIA are highly regarded and widely accepted. There are three main types of GIA reports: Identification reports, Grading reports and Origin reports. GIA reports are accepted globally. Each GIA certified diamonds that are below one carat will be given a unique GIA number crafted in by Laser in the girdle of the diamonds. However, diamonds over one Carat has no such requirements. GIA also provides a search function in its website to verify the authenticity of GIA diamonds reports. GIA全名为GEMOLOGICAL INSTITUTE OF AMERICA，于1931年在美国洛杉矶创立，是把钻石鉴定证书国际化的创始者，所发出的证书最为业界所认受，具有极高的公信力。其证书共分3种类别，包括:有色宝石鉴定证书、有色宝石分析证书及有色宝石原产地证书。 GIA证书国际通用，一克拉以下的钻石在腰线上都使用镭射激光刻有GIA证书号码，而一克拉以上则没有严格规定需要刻上号码与否。此外，只要登入GIA网站，更可即时查核证书的所有资料，因而能为钻石的真伪及品质带来信心保证。

鑽石高階層會議聯盟鑑定證書 HRD CERTIFICATE HRD CERTIFICATE 钻石高阶层会议联盟鉴定证书HRD CERTIFICATE

HRD全名為HOGE RAAD VOOR DIAMANT，譯名為比利時的"鑽石高階層會議聯盟"，是國際鑽石理事會（IDC）協商制定的國際性鑽石分級標準。HRD證書除了記錄了鑽石的外型、量度呎吋及重量之外，更會記錄了切割比率的資料，包括:桌面(Table)、腰圍厚度(Thin)、冠部高度(Crown Height)及底部深度(Pavilion Depth)等數值，因而更能查證鑽石的真偽。 Hoge Raad Voor Diamant (HRD) or the Diamond High Council represents the Belgian diamond industry. HRD Antwerp diamond lab issues diamond certificates, grading and jewellery reports following the rules for grading polished diamonds set by the International Diamond Council (IDC). A HRD certificate not only records the diamond shape, size and carat, but also the cut ratios, including Table, Thin, Crown Height and Pavilion Depth. Such information made identification of gemstones easier. HRD全名为HOGE RAAD VOOR DIAMANT，译名为比利时的"钻石高阶层会议联盟"，是国际钻石理事会（IDC）协商制定的国际性钻石分级标准。 HRD证书除了记录了钻石的外型、量度呎吋及重量之外，更会记录了切割比率的资料，包括:桌面(Table)、腰围厚度(Thin)、冠部高度(Crown Height)及底部深度(Pavilion Depth)等数值，因而更能查证钻石的真伪。

美國寶玉石學會 AGS CERTIFICATE AGS CERTIFICATE 美国宝玉石学会AGS CERTIFICATE

AGS全名為AMERICAN GEM SOCIETY，成立於1934年，並於1996年設立了首間的檢測實驗室，提供鑽石、寶石等的評級服務，其鑑定標準備受國際的珠寶界所認同，採用獨有的切割、顏色及淨度分級制，級別由0-10級，0為最佳的級別，使證書資料更簡單易明，即使是一般消費者亦可更快了解寶石的品質。 American Gem Society was (AGS) established in 1934. In 1996 AGS set up a laboratory to provide grading services for diamonds and gemstones. Its identification standards are accepted by participants of the global jewellery industry. AGS develops its own system in grading the cut, colour and clarity of diamonds. The grades range from 0-10 with 0 being the best grade. That made the information of diamonds more readily understandable by the mass market. AGS全名为AMERICAN GEM SOCIETY，成立于1934年，并于1996年设立了首间的检测实验室，提供钻石、宝石等的评级服务，其鉴定标准备受国际的珠宝界所认同，采用独有的切割、颜色及净度分级制，级别由0-10级，0为最佳的级别，使证书资料更简单易明，即使是一般消费者亦可更快了解宝石的品质。

國際寶石學院鑑定證書 IGI CERTIFICATE IGI CERTIFICATE 国际宝石学院鉴定证书IGI CERTIFICATE

IGI CERTIFICATE IGI 成立於1975年，全名為INTERNATIONAL GEMOLOGICAL INSTITUTE，是安特衛普歷史最悠久的實驗室，亦是世界規模最大的珠寶鑑定機構，剛開始的時候只為比利時的少數鑽石世家作私人鑽石鑒定。在安特衛普、紐約、香港、孟買、曼谷、東京、杜拜特拉維夫、多倫多、洛杉磯、加爾各答等17個大城市設有辦事處。作為世界最大的獨立鑽石、彩色寶石和首飾鑑定評估機構，IGI 為全球的專業人士和消費者提供了卓越的檢測服務，另更提供有關寶石的教育課程、激光刻字及防偽塑封等服務。 Founded in 1975 in Antwerp, Belgium, International Gemological Institute (IGI) is the oldest and also the largest independent gemology laboratory in the world. IGI started off their gemstone grading and identification service only to a few jewellery noble houses in Belgium. Now it grows to an institute with representative offices in 17 big cities in the world including Antwerp, New York, Hong Kong, Mumbai, Bangkok, Tokyo, Dubai, Tel Aviv, Toronto, Los Angeles and Calcutta. On top of diamonds and gemstones grading and identification services, IGI also provides other services such as education, Laser inscription and security seal. IGI CERTIFICATE IGI成立于1975年，全名为INTERNATIONAL GEMOLOGICAL INSTITUTE，是安特卫普历史最悠久的实验室，亦是世界规模最大的珠宝鉴定机构，刚开始的时候只为比利时的少数钻石世家作私人钻石鉴定。在安特卫普、纽约、香港、孟买、曼谷、东京、杜拜特拉维夫、多伦多、洛杉矶、加尔各答等17个大城市设有办事处。作为世界最大的独立钻石、彩色宝石和首饰鉴定评估机构，IGI为全球的专业人士和消费者提供了卓越的检测服务，另更提供有关宝石的教育课程、激光刻字及防伪塑封等服务。

全球著名的寶石鑑定機構GIA可提供激光刻字服務，使用鐳射激光在鑽石的腰位刻上證書號碼，肉眼無法察覺，不會影響鑽石的外觀、結構及價值，但當使用適當的儀器，即可輕易查證相關證書上的資料是否脗合，確保鑽石的真偽。 The renowned GIA provides Laser inscription service. A unique GIA identification number will be inscribed into the girdle of a diamond by Laser. The inscription is not noticeable by the naked eye and so will not affect the appearance of the diamond, nor its structure and value. The number inscribed can be inspected using instrument and could be cross referenced to the GIA report to ensure authenticity. 全球著名的宝石鉴定机构GIA可提供激光刻字服务，使用镭射激光在钻石的腰位刻上证书号码，肉眼无法察觉，不会影响钻石的外观、结构及价值，但当使用适当的仪器，即可轻易查证相关证书上的资料是否脗合，确保钻石的真伪。

此外，消費者更可要求個人化的刻字服務(需另付額外費用)，透過鐳射激光刻上個人化的訊息，甚或是圖案、標誌等，作為婚戒或禮品，可更充分傳達綿綿情意。 Consumers can also get a personalized laser inscription service to their diamonds, for instance a message or a logo, at an additional charge. This makes jewellery carry additional meanings and is a perfect way to deliver the sweetest message to lovers. 此外，消费者更可要求个人化的刻字服务(需另付额外费用)，透过镭射激光刻上个人化的讯息，甚或是图案、标志等，作为婚戒或礼品，可更充分传达绵绵情意。

其實除了由美國寶石學院GIA所訂立的4C標準以外，考量一顆鑽石的優劣尚有其它重要的進階考慮因素，包括: 冠部(CROWN)大小及角度、腰間(GIRDLE)粗幼、底部(PAVILLION)深淺角度等；因為這些條件會全面影響鑽石的深度(DEPTH)百分比、檯面(TABLE)百分比、長寬深比例、底尖大小。 The GIA has created the 4C standards in grading diamonds. Yet there are other important criteria to consider in grading diamonds in an advanced level, such as crown size and its angle, width of the girdle, and depth of the pavilion and its angle. These criteria affect the depth %, the table%, the proportion between length, width and depth, as well as the size of the culet. 其实除了由美国宝石学院GIA所订立的4C标准以外，考量一颗钻石的优劣尚有其它重要的进阶考虑因素，包括:冠部(CROWN)大小及角度、腰间(GIRDLE)粗幼、底部(PAVILLION)深浅角度等；因为这些条件会全面影响钻石的深度(DEPTH)百分比、台面(TABLE)百分比、长宽深比例、底尖大小。

鑽石腰部以上的梯形部份被稱為冠部，具有分散進入鑽石內部光線的作用，白光射進鑽石後會使鑽石更顯閃亮，而彩色光線進入後則會產生色散的效果。 The trapezium above the girdle of a diamond is called the crown. The crown functions as a diffuser of light going into the diamond. White light hitting a diamond will create luster and sparkle while coloured light entering a diamond will cause a dispersion of colours. 钻石腰部以上的梯形部份被称为冠部，具有分散进入钻石内部光线的作用，白光射进钻石后会使钻石更显闪亮，而彩色光线进入后则会产生色散的效果。

鑽石中間部分的大面積瓣面(FACET)，被稱為檯面(Table)；檯面的側面分別有三角刻面(Star Facet)、菱形刻面{稱為風箏刻面(Crown Facet)}、腰上刻面(Upper Girdle Facet)，而腰上刻面中間有一稜線分隔。以圓形鑽石為例，冠部共有33刻面。 In bigger facet in the middle of the crown is called the table. On the side of the table there are the star facet, the rhombus facet (or crown facet) and the upper girdle facet. The line between the upper girdle facet is the ridgeline. Typically there are 33 facets in the crown of a Round cut diamond. 钻石中间部分的大面积瓣面(FACET)，被称为台面(Table)；台面的侧面分别有三角刻面(Star Facet)、菱形刻面{称为风筝刻面(Crown Facet)}、腰上刻面(Upper Girdle Facet)，而腰上刻面中间有一棱线分隔。以圆形钻石为例，冠部共有33刻面。

檯面的面積如過大，即超越63%時，進入的光線未能被有效反射，會大大減弱鑽石的閃爍度，所以消費者應選購54%至60%檯面比例的鑽石，而切割分級要在GOOD CUT以上。 Reflection of light will not be effective when a diamond has a large table (table area larger than 63%) and so a loss of luster and shine will result. We suggest consumers to choose diamonds with table size between 54-60% with a cut grade of Good Cut or above. 台面的面积如过大，即超越63%时，进入的光线未能被有效反射，会大大减弱钻石的闪烁度，所以消费者应选购54%至60%台面比例的钻石，而切割分级要在GOOD CUT以上。

腰部是鑽石外圍最薄的部分，如果從鑽石的側面觀察，腰圍成一條線，但不同的鑽石有著不同厚薄的腰帶，由EXTREMELY THIN至EXTREMELY THICK共分7個粗幼程度。腰部的粗幼，具有保護鑽石邊緣的作用，防止其破裂，並做為寶石鑲嵌之邊緣。 The girdle is the thinnest part of all periphery of a diamond. Girdle forms a line while a diamond is viewed from the side. Different diamonds have different girdle thickness. Thickness has 7 grades and ranges from “extremely thin” to “extremely thick”. The thickness of girdle serves to protect a diamond from cracking. It is also the mounting area for gemstones. 腰部是钻石外围最薄的部分，如果从钻石的侧面观察，腰围成一条线，但不同的钻石有着不同厚薄的腰带，由EXTREMELY THIN至EXTREMELY THICK共分7个粗幼程度。腰部的粗幼，具有保护钻石边缘的作用，防止其破裂，并做为宝石镶嵌之边缘。

以圓形鑽石為例，腰圍之下有24刻面，如加上底尖的1面，底部共有25面。再加上冠部的33面，共58面，即現時稱為明亮形切割(FULL BRILLIANT CUT)的車工。底部的尖端被稱為底尖，是鑽石最脆弱的地方，由於以往打磨技術未如現代先進，故鑽石常具有底尖點，而且底尖點面積亦可能較大，質素較佳之現代車工，其底尖點則會極細甚至呈尖錐狀，但亦可能會較為脆弱。 Take a Round cut diamond as example. There are 24 facets below the girdle and the culet is counted as 1 facet so the pavilion has a total of 25 facets. Adding the 33 facets from the crown and so a round cut diamond has a total of 58 facets. This is also called the Full Brilliant Cut. The top of a pavilion is called the culet and is the most brittle part of a diamond. Polishing technique in the past is not as advanced and so the size of the culet is larger. With the advancement in polishing techniques, the culet is getting more pointed and the facet is smaller. Yet it also means the culet is more brittle. 以圆形钻石为例，腰围之下有24刻面，如加上底尖的1面，底部共有25面。再加上冠部的33面，共58面，即现时称为明亮形切割(FULL BRILLIANT CUT)的车工。底部的尖端被称为底尖，是钻石最脆弱的地方，由于以往打磨技术未如现代先进，故钻石常具有底尖点，而且底尖点面积亦可能较大，质素较佳之现代车工，其底尖点则会极细甚至呈尖锥状，但亦可能会较为脆弱。