一、鉆石等級有哪些

判斷一顆鉆石好壞通常看4C，即顏色(se)（建(jian)議(yi)I色(se)或(huo)I色(se)以(yi)上(shang)(shang)）、凈(jing)度（建(jian)議(yi)Si1或(huo)Si1以(yi)上(shang)(shang)）、切工（建(jian)議(yi)VG或(huo)者EX）、克拉重(zhong)（建(jian)議(yi)30分以(yi)上(shang)(shang)）這(zhe)四個參數(shu)共同(tong)左右著鉆(zhan)石的(de)價(jia)格。另外鉆(zhan)石的(de)熒光等級(ji)，奶咖情(qing)況(kuang)也會(hui)影(ying)響鉆(zhan)石的(de)價(jia)值(zhi)。

鉆(zhan)(zhan)(zhan)石(shi)(shi)重量(liang)(liang)(liang)Carat：鉆(zhan)(zhan)(zhan)石(shi)(shi)重量(liang)(liang)(liang)以克拉(CT)計(ji)算。1克拉=0.2克=100分(fen)。鉆(zhan)(zhan)(zhan)石(shi)(shi)的(de)(de)價值(zhi)隨著鉆(zhan)(zhan)(zhan)石(shi)(shi)重量(liang)(liang)(liang)的(de)(de)增大(da)呈(cheng)現不規則的(de)(de)幾何(he)級數(shu)增長(chang)，鉆(zhan)(zhan)(zhan)石(shi)(shi)越大(da)越稀(xi)有(you)，越大(da)的(de)(de)鉆(zhan)(zhan)(zhan)石(shi)(shi)越能體(ti)現重量(liang)(liang)(liang)對(dui)價格的(de)(de)影響。

鉆(zhan)石(shi)凈(jing)(jing)度Clarity：凈(jing)(jing)度是指鉆(zhan)石(shi)內含(han)雜質所在(zai)的(de)位置(zhi)，大小、數(shu)量等來判定，最純 凈(jing)(jing)主要是If，排序下來是IF、VVS1、VVS2、VS1、VS2、SI1、SI2、I1、I2、I3，當 然了凈(jing)(jing)度越高價格(ge)會越高。

鉆(zhan)石(shi)顏(yan)色(se)Color：一般鉆(zhan)石(shi)的(de)顏(yan)色(se)指的(de)是(shi)從純凈(jing)無色(se)到(dao)淺黃色(se)，成(cheng)色(se)越淡(dan)，價值(zhi)越高(gao)(gao)。從高(gao)(gao)到(dao)底的(de)排(pai)列為D、E、F、G、H、I、J、K、L、M、N，等級最(zui)高(gao)(gao)是(shi)D(無色(se))最(zui)低是(shi)Z(泛黃)，小編建議平(ping)時購買(mai)鉆(zhan)石(shi)的(de)時候最(zui)好買(mai)J級以上顏(yan)色(se)的(de)鉆(zhan)石(shi)。

鉆(zhan)(zhan)(zhan)(zhan)(zhan)石(shi)(shi)(shi)切(qie)工(gong)(gong)(gong)(gong)(gong)(gong)Cut：鉆(zhan)(zhan)(zhan)(zhan)(zhan)石(shi)(shi)(shi)切(qie)工(gong)(gong)(gong)(gong)(gong)(gong)包括切(qie)割(ge)比(bi)例、拋光、修飾等(deng)。好的(de)(de)切(qie)工(gong)(gong)(gong)(gong)(gong)(gong)會增(zeng)加鉆(zhan)(zhan)(zhan)(zhan)(zhan)石(shi)(shi)(shi)在視覺(jue)上的(de)(de)效果，讓(rang)鉆(zhan)(zhan)(zhan)(zhan)(zhan)石(shi)(shi)(shi)看(kan)起來更有火彩。在鉆(zhan)(zhan)(zhan)(zhan)(zhan)石(shi)(shi)(shi)的(de)(de)4C標(biao)準中，切(qie)工(gong)(gong)(gong)(gong)(gong)(gong)是唯(wei)一(yi)(yi)由人工(gong)(gong)(gong)(gong)(gong)(gong)決(jue)定(ding)的(de)(de)因素。鉆(zhan)(zhan)(zhan)(zhan)(zhan)石(shi)(shi)(shi)切(qie)工(gong)(gong)(gong)(gong)(gong)(gong)等(deng)級從高到低有，理想切(qie)工(gong)(gong)(gong)(gong)(gong)(gong)(EXCELLENT)、非常(chang)好切(qie)工(gong)(gong)(gong)(gong)(gong)(gong)(VERY GOOD)、好切(qie)工(gong)(gong)(gong)(gong)(gong)(gong)(GOOD)、一(yi)(yi)般切(qie)工(gong)(gong)(gong)(gong)(gong)(gong)(FAIR)。切(qie)工(gong)(gong)(gong)(gong)(gong)(gong)越好的(de)(de)鉆(zhan)(zhan)(zhan)(zhan)(zhan)石(shi)(shi)(shi)價格當然也(ye)會越貴(gui)。

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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(da)到的標(biao)準。這種(zhong)切(qie)工使鉆石(shi)幾(ji)乎反射了所有進入鉆石(shi)的光線，是一(yi)種(zhong)杰出的切(qie)工。

非常好切工

鉆(zhan)石(shi)(shi)切工的(de)“VG”則是“VERY GOOD”，為非常好(hao)切工，代表(biao)了(le)大(da)約(yue)15%的(de)鉆(zhan)石(shi)(shi)切工。這種切工可(ke)以使(shi)鉆(zhan)石(shi)(shi)反射出和標準(zhun)等(deng)級切工的(de)光芒，而且價格偏低。

好切工

所說(shuo)的(de)“G”的(de)切工就是“GOOD”，為好切工，則(ze)是鉆石反(fan)射了大部分進入鉆使內部的(de)光。這種(zhong)級別的(de)要(yao)比VG級便(bian)宜的(de)多。

一般切工

一(yi)般切工(FAIR)：代(dai)表粗糙(cao)度為35%的鉆(zhan)石切工，仍然是(shi)(shi)優質鉆(zhan)石，但是(shi)(shi)一(yi)般切工加工的鉆(zhan)石反射的光線不及G級切工。

差切工

差切(qie)工(POOR)：這(zhe)包含所有沒(mei)有符合(he)一般切(qie)工標準的(de)鉆石(shi)。這(zhe)些鉆石(shi)的(de)切(qie)工要么(me)深而(er)窄要么(me)淺而(er)寬(kuan)易于讓光線從邊部(bu)或底部(bu)逸出(chu)。

八(ba)(ba)心八(ba)(ba)箭(jian)鉆石切工

好的切(qie)(qie)工(gong)(gong)的鉆(zhan)(zhan)石(shi)要比(bi)切(qie)(qie)工(gong)(gong)差的鉆(zhan)(zhan)石(shi)貴很多(duo)，鉆(zhan)(zhan)石(shi)切(qie)(qie)工(gong)(gong)的好壞直接(jie)影響鉆(zhan)(zhan)石(shi)的閃(shan)耀度，業內人士選購鉆(zhan)(zhan)石(shi)首(shou)先要看的就是(shi)鉆(zhan)(zhan)石(shi)切(qie)(qie)工(gong)(gong)的好壞。很多(duo)珠寶(bao)店銷(xiao)售(shou)的鉆(zhan)(zhan)石(shi)是(shi)只(zhi)有一份成品鑒(jian)定證書的，這種證書會(hui)在(zai)證書上(shang)標明臺寬比(bi)和亭(ting)深比(bi)，一般人根本看不(bu)懂(dong)其中的含義，珠寶(bao)店銷(xiao)售(shou)員通常情況下(xia)銷(xiao)售(shou)員會(hui)跟我們講鉆(zhan)(zhan)石(shi)是(shi)八(ba)(ba)心(xin)八(ba)(ba)箭的切(qie)(qie)工(gong)(gong)，其實(shi)八(ba)(ba)心(xin)八(ba)(ba)箭不(bu)是(shi)切(qie)(qie)工(gong)(gong)等級，八(ba)(ba)心(xin)八(ba)(ba)箭也(ye)不(bu)是(shi)特殊切(qie)(qie)工(gong)(gong)，八(ba)(ba)心(xin)八(ba)(ba)箭只(zhi)不(bu)過是(shi)普通圓(yuan)鉆(zhan)(zhan)切(qie)(qie)工(gong)(gong)等級達到一定的標準所呈現出的效果(guo)，且八(ba)(ba)心(xin)八(ba)(ba)箭需要在(zai)專(zhuan)業的切(qie)(qie)工(gong)(gong)鏡(jing)下(xia)才會(hui)呈現出效果(guo)。八(ba)(ba)心(xin)八(ba)(ba)箭在(zai)歐美(mei)并不(bu)受待見，GIA也(ye)不(bu)會(hui)在(zai)證書上(shang)標志(zhi)八(ba)(ba)心(xin)八(ba)(ba)箭，因為其獨特的含義在(zai)亞(ya)洲一些國家(jia)比(bi)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時(shi)候首選帶有(you)GIA證書的鉆石，這種鉆石以后想要(yao)賣掉的話更加(jia)保值，也更加(jia)容易賣出去的。