一、鉆石等級有哪些

判斷一顆鉆石好壞通(tong)常看4C，即(ji)顏色（建(jian)(jian)議I色或I色以(yi)上）、凈(jing)度（建(jian)(jian)議Si1或Si1以(yi)上）、切(qie)工(gong)（建(jian)(jian)議VG或者(zhe)EX）、克拉重（建(jian)(jian)議30分(fen)以(yi)上）這四個(ge)參數共同左右著(zhu)鉆石(shi)(shi)的(de)(de)價格。另外鉆石(shi)(shi)的(de)(de)熒光等級，奶(nai)咖情況也會(hui)影響鉆石(shi)(shi)的(de)(de)價值。

鉆石重(zhong)(zhong)量Carat：鉆石重(zhong)(zhong)量以克(ke)(ke)拉(CT)計算(suan)。1克(ke)(ke)拉=0.2克(ke)(ke)=100分。鉆石的價(jia)值隨著鉆石重(zhong)(zhong)量的增大呈(cheng)現不規則(ze)的幾何級(ji)數增長，鉆石越(yue)大越(yue)稀有(you)，越(yue)大的鉆石越(yue)能體現重(zhong)(zhong)量對(dui)價(jia)格的影響。

鉆(zhan)石凈度(du)(du)Clarity：凈度(du)(du)是指(zhi)鉆(zhan)石內含(han)雜(za)質所(suo)在的位置，大小、數(shu)量等來(lai)判定，最純 凈主要是If，排序下來(lai)是IF、VVS1、VVS2、VS1、VS2、SI1、SI2、I1、I2、I3，當 然了凈度(du)(du)越(yue)高價格會越(yue)高。

鉆(zhan)(zhan)石顏色Color：一般(ban)鉆(zhan)(zhan)石的(de)(de)顏色指的(de)(de)是從純(chun)凈無(wu)色到(dao)淺黃色，成(cheng)色越(yue)淡，價值越(yue)高。從高到(dao)底(di)的(de)(de)排列為D、E、F、G、H、I、J、K、L、M、N，等級最(zui)(zui)高是D(無(wu)色)最(zui)(zui)低是Z(泛黃)，小編建議平時購買鉆(zhan)(zhan)石的(de)(de)時候最(zui)(zui)好買J級以上顏色的(de)(de)鉆(zhan)(zhan)石。

鉆(zhan)石(shi)(shi)(shi)切(qie)(qie)工(gong)(gong)(gong)(gong)(gong)Cut：鉆(zhan)石(shi)(shi)(shi)切(qie)(qie)工(gong)(gong)(gong)(gong)(gong)包括切(qie)(qie)割比例(li)、拋光(guang)、修(xiu)飾等。好(hao)的切(qie)(qie)工(gong)(gong)(gong)(gong)(gong)會增加鉆(zhan)石(shi)(shi)(shi)在視覺上的效果(guo)，讓(rang)鉆(zhan)石(shi)(shi)(shi)看(kan)起來更有(you)火彩。在鉆(zhan)石(shi)(shi)(shi)的4C標(biao)準中，切(qie)(qie)工(gong)(gong)(gong)(gong)(gong)是唯一由(you)人工(gong)(gong)(gong)(gong)(gong)決定(ding)的因素。鉆(zhan)石(shi)(shi)(shi)切(qie)(qie)工(gong)(gong)(gong)(gong)(gong)等級從高(gao)到低有(you)，理想切(qie)(qie)工(gong)(gong)(gong)(gong)(gong)(EXCELLENT)、非常好(hao)切(qie)(qie)工(gong)(gong)(gong)(gong)(gong)(VERY GOOD)、好(hao)切(qie)(qie)工(gong)(gong)(gong)(gong)(gong)(GOOD)、一般切(qie)(qie)工(gong)(gong)(gong)(gong)(gong)(FAIR)。切(qie)(qie)工(gong)(gong)(gong)(gong)(gong)越好(hao)的鉆(zhan)石(shi)(shi)(shi)價格當然(ran)也會越貴。

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二、鉆石切工有哪些級別

理想切工

“EX”就是指“EXCELLENT”，即所說的完美切工。代表了只有3%的一流高質量鉆石才能達到的標準。這種切工使鉆(zhan)石(shi)幾乎反射了所有進入鉆(zhan)石(shi)的光線，是一種杰(jie)出(chu)的切工。

非常好切工

鉆石切(qie)(qie)工(gong)(gong)(gong)的“VG”則是“VERY GOOD”，為非常好切(qie)(qie)工(gong)(gong)(gong)，代表了大約(yue)15%的鉆石切(qie)(qie)工(gong)(gong)(gong)。這種切(qie)(qie)工(gong)(gong)(gong)可以使(shi)鉆石反射出和標準等級切(qie)(qie)工(gong)(gong)(gong)的光芒，而且價格偏低。

好切工

所(suo)說(shuo)的(de)“G”的(de)切工(gong)就是“GOOD”，為好(hao)切工(gong)，則是鉆石反射(she)了(le)大部(bu)分進入鉆使內部(bu)的(de)光(guang)。這(zhe)種級別的(de)要比(bi)VG級便(bian)宜的(de)多。

一般切工

一般(ban)切(qie)工(FAIR)：代表粗糙度為35%的(de)鉆(zhan)石切(qie)工，仍然是優(you)質鉆(zhan)石，但(dan)是一般(ban)切(qie)工加工的(de)鉆(zhan)石反射(she)的(de)光線(xian)不(bu)及G級(ji)切(qie)工。

差切工

差切工(gong)(POOR)：這包(bao)含(han)所有(you)沒有(you)符合一(yi)般切工(gong)標準的鉆石。這些鉆石的切工(gong)要么深而窄要么淺(qian)而寬(kuan)易于(yu)讓光(guang)線從邊(bian)部或底部逸(yi)出。

八(ba)心八(ba)箭鉆石切工

好(hao)(hao)的(de)切(qie)工(gong)(gong)(gong)的(de)鉆(zhan)石(shi)要比切(qie)工(gong)(gong)(gong)差的(de)鉆(zhan)石(shi)貴很(hen)多(duo)，鉆(zhan)石(shi)切(qie)工(gong)(gong)(gong)的(de)好(hao)(hao)壞(huai)直接影響鉆(zhan)石(shi)的(de)閃耀度，業內人士選購鉆(zhan)石(shi)首先(xian)要看的(de)就是(shi)(shi)鉆(zhan)石(shi)切(qie)工(gong)(gong)(gong)的(de)好(hao)(hao)壞(huai)。很(hen)多(duo)珠(zhu)寶店銷售的(de)鉆(zhan)石(shi)是(shi)(shi)只有一份(fen)成品鑒定(ding)(ding)證書(shu)的(de)，這種證書(shu)會(hui)在(zai)證書(shu)上標明(ming)臺寬比和亭深比，一般人根(gen)本看不(bu)(bu)懂其中的(de)含義，珠(zhu)寶店銷售員(yuan)通常情(qing)況下(xia)銷售員(yuan)會(hui)跟我們講(jiang)鉆(zhan)石(shi)是(shi)(shi)八(ba)(ba)(ba)心(xin)八(ba)(ba)(ba)箭(jian)的(de)切(qie)工(gong)(gong)(gong)，其實(shi)八(ba)(ba)(ba)心(xin)八(ba)(ba)(ba)箭(jian)不(bu)(bu)是(shi)(shi)切(qie)工(gong)(gong)(gong)等(deng)級，八(ba)(ba)(ba)心(xin)八(ba)(ba)(ba)箭(jian)也(ye)不(bu)(bu)是(shi)(shi)特(te)殊切(qie)工(gong)(gong)(gong)，八(ba)(ba)(ba)心(xin)八(ba)(ba)(ba)箭(jian)只不(bu)(bu)過(guo)是(shi)(shi)普通圓鉆(zhan)切(qie)工(gong)(gong)(gong)等(deng)級達到一定(ding)(ding)的(de)標準所(suo)呈(cheng)(cheng)現(xian)出(chu)的(de)效(xiao)果，且八(ba)(ba)(ba)心(xin)八(ba)(ba)(ba)箭(jian)需要在(zai)專業的(de)切(qie)工(gong)(gong)(gong)鏡下(xia)才會(hui)呈(cheng)(cheng)現(xian)出(chu)效(xiao)果。八(ba)(ba)(ba)心(xin)八(ba)(ba)(ba)箭(jian)在(zai)歐美并不(bu)(bu)受待見，GIA也(ye)不(bu)(bu)會(hui)在(zai)證書(shu)上標志八(ba)(ba)(ba)心(xin)八(ba)(ba)(ba)箭(jian)，因為(wei)其獨特(te)的(de)含義在(zai)亞(ya)洲(zhou)一些國家比較流(liu)行

三、購買鉆戒注意事項

購買鉆戒最好選帶有裸鉆分級證書的鉆石，因為鉆石鑲嵌好以后無法準確的對鉆石的所有參數進行分級。很多時候我們買鉆石被商場的現貨左右，對于鉆石的等級也是被略懂鉆石的員工忽悠，國內很多店鋪銷售的鉆石沒有裸鉆分級證書，這種沒有裸鉆分級證書的在行業內統稱散貨，帶有裸鉆分級證書的鉆石稱為證書貨。裸鉆分級證書會清楚的標明鉆石的各項參數，建議大家在購買鉆石的(de)時候首(shou)選帶有GIA證(zheng)書的(de)鉆石，這種(zhong)鉆石以(yi)后想要賣掉的(de)話更加(jia)保(bao)值，也更加(jia)容易賣出去的(de)。