一、鉆石等級有哪些
判斷一顆鉆石好壞通常看4C,即顏色(建議(yi)I色或I色以上(shang))、凈度(建議(yi)Si1或Si1以上(shang))、切(qie)工(gong)(建議(yi)VG或者(zhe)EX)、克拉重(zhong)(建議(yi)30分以上(shang))這四(si)個參(can)數共(gong)同左右著鉆(zhan)(zhan)石(shi)的(de)價(jia)格。另(ling)外鉆(zhan)(zhan)石(shi)的(de)熒光等(deng)級(ji),奶(nai)咖情況也會影響鉆(zhan)(zhan)石(shi)的(de)價(jia)值。
鉆(zhan)石(shi)重(zhong)(zhong)(zhong)量Carat:鉆(zhan)石(shi)重(zhong)(zhong)(zhong)量以克(ke)拉(CT)計算(suan)。1克(ke)拉=0.2克(ke)=100分。鉆(zhan)石(shi)的(de)(de)價值(zhi)隨著鉆(zhan)石(shi)重(zhong)(zhong)(zhong)量的(de)(de)增(zeng)(zeng)大(da)(da)呈現不規則的(de)(de)幾何級數增(zeng)(zeng)長,鉆(zhan)石(shi)越(yue)大(da)(da)越(yue)稀有,越(yue)大(da)(da)的(de)(de)鉆(zhan)石(shi)越(yue)能體現重(zhong)(zhong)(zhong)量對價格的(de)(de)影(ying)響。
鉆石凈度(du)Clarity:凈度(du)是指(zhi)鉆石內(nei)含雜質所(suo)在(zai)的(de)位置(zhi),大(da)小、數量等來判定,最純(chun) 凈主(zhu)要是If,排序(xu)下來是IF、VVS1、VVS2、VS1、VS2、SI1、SI2、I1、I2、I3,當 然了凈度(du)越高價(jia)格會越高。
鉆(zhan)(zhan)石顏色(se)(se)Color:一(yi)般鉆(zhan)(zhan)石的(de)顏色(se)(se)指的(de)是(shi)從(cong)純凈無(wu)色(se)(se)到淺黃色(se)(se),成色(se)(se)越(yue)淡(dan),價值越(yue)高(gao)(gao)。從(cong)高(gao)(gao)到底的(de)排列為(wei)D、E、F、G、H、I、J、K、L、M、N,等級最高(gao)(gao)是(shi)D(無(wu)色(se)(se))最低(di)是(shi)Z(泛黃),小編建(jian)議平(ping)時購(gou)買鉆(zhan)(zhan)石的(de)時候最好(hao)買J級以上(shang)顏色(se)(se)的(de)鉆(zhan)(zhan)石。
鉆石切(qie)工(gong)(gong)(gong)(gong)Cut:鉆石切(qie)工(gong)(gong)(gong)(gong)包括切(qie)割比例、拋光、修飾等(deng)。好的(de)切(qie)工(gong)(gong)(gong)(gong)會增加鉆石在視覺上的(de)效果,讓鉆石看(kan)起來更有火彩。在鉆石的(de)4C標準中,切(qie)工(gong)(gong)(gong)(gong)是唯一由人工(gong)(gong)(gong)(gong)決(jue)定的(de)因素。鉆石切(qie)工(gong)(gong)(gong)(gong)等(deng)級從高到低有,理想切(qie)工(gong)(gong)(gong)(gong)(EXCELLENT)、非常好切(qie)工(gong)(gong)(gong)(gong)(VERY GOOD)、好切(qie)工(gong)(gong)(gong)(gong)(GOOD)、一般切(qie)工(gong)(gong)(gong)(gong)(FAIR)。切(qie)工(gong)(gong)(gong)(gong)越(yue)好的(de)鉆石價(jia)格(ge)當(dang)然也會越(yue)貴。
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(neng)達到的(de)標準。這(zhe)種(zhong)切(qie)工使鉆(zhan)石幾乎(hu)反射了所有進(jin)入(ru)鉆(zhan)石的(de)光線,是一種(zhong)杰出的(de)切(qie)工。
非常好切工
鉆石(shi)切工(gong)的(de)“VG”則是“VERY GOOD”,為非常好切工(gong),代(dai)表了大約(yue)15%的(de)鉆石(shi)切工(gong)。這種切工(gong)可以使鉆石(shi)反射出和標準等級切工(gong)的(de)光芒(mang),而且價格偏低。
好切工
所說(shuo)的(de)“G”的(de)切工(gong)就是(shi)“GOOD”,為好切工(gong),則是(shi)鉆石反射了大(da)部分進入鉆使內部的(de)光。這種級別的(de)要比(bi)VG級便宜的(de)多。
一般切工
一(yi)般切工(gong)(FAIR):代表粗糙度為(wei)35%的鉆(zhan)石切工(gong),仍(reng)然是(shi)優質(zhi)鉆(zhan)石,但是(shi)一(yi)般切工(gong)加工(gong)的鉆(zhan)石反(fan)射的光線不及G級切工(gong)。
差切工
差切工(POOR):這包(bao)含所(suo)有沒(mei)有符合一般切工標準的鉆石。這些鉆石的切工要么深而(er)窄(zhai)要么淺而(er)寬易于讓光線從(cong)邊部或底部逸出。
八心八箭鉆石切工
好(hao)的(de)(de)切(qie)(qie)(qie)工(gong)(gong)的(de)(de)鉆(zhan)(zhan)石(shi)(shi)要(yao)比(bi)切(qie)(qie)(qie)工(gong)(gong)差的(de)(de)鉆(zhan)(zhan)石(shi)(shi)貴很(hen)多,鉆(zhan)(zhan)石(shi)(shi)切(qie)(qie)(qie)工(gong)(gong)的(de)(de)好(hao)壞直接影(ying)響鉆(zhan)(zhan)石(shi)(shi)的(de)(de)閃(shan)耀度,業內人士(shi)選購(gou)鉆(zhan)(zhan)石(shi)(shi)首先要(yao)看(kan)的(de)(de)就是(shi)(shi)鉆(zhan)(zhan)石(shi)(shi)切(qie)(qie)(qie)工(gong)(gong)的(de)(de)好(hao)壞。很(hen)多珠寶店銷(xiao)(xiao)售的(de)(de)鉆(zhan)(zhan)石(shi)(shi)是(shi)(shi)只(zhi)有一份成品鑒定(ding)(ding)證書的(de)(de),這種證書會(hui)(hui)在(zai)證書上(shang)(shang)標(biao)明(ming)臺寬比(bi)和亭深比(bi),一般人根(gen)本看(kan)不(bu)懂(dong)其(qi)(qi)中的(de)(de)含義,珠寶店銷(xiao)(xiao)售員(yuan)通常(chang)情況(kuang)下銷(xiao)(xiao)售員(yuan)會(hui)(hui)跟我們(men)講鉆(zhan)(zhan)石(shi)(shi)是(shi)(shi)八(ba)(ba)心八(ba)(ba)箭(jian)(jian)的(de)(de)切(qie)(qie)(qie)工(gong)(gong),其(qi)(qi)實(shi)八(ba)(ba)心八(ba)(ba)箭(jian)(jian)不(bu)是(shi)(shi)切(qie)(qie)(qie)工(gong)(gong)等(deng)級,八(ba)(ba)心八(ba)(ba)箭(jian)(jian)也不(bu)是(shi)(shi)特殊切(qie)(qie)(qie)工(gong)(gong),八(ba)(ba)心八(ba)(ba)箭(jian)(jian)只(zhi)不(bu)過(guo)是(shi)(shi)普(pu)通圓(yuan)鉆(zhan)(zhan)切(qie)(qie)(qie)工(gong)(gong)等(deng)級達到一定(ding)(ding)的(de)(de)標(biao)準所呈現出(chu)的(de)(de)效果(guo),且八(ba)(ba)心八(ba)(ba)箭(jian)(jian)需(xu)要(yao)在(zai)專業的(de)(de)切(qie)(qie)(qie)工(gong)(gong)鏡(jing)下才會(hui)(hui)呈現出(chu)效果(guo)。八(ba)(ba)心八(ba)(ba)箭(jian)(jian)在(zai)歐美并(bing)不(bu)受待見(jian),GIA也不(bu)會(hui)(hui)在(zai)證書上(shang)(shang)標(biao)志八(ba)(ba)心八(ba)(ba)箭(jian)(jian),因(yin)為其(qi)(qi)獨特的(de)(de)含義在(zai)亞洲一些國(guo)家(jia)比(bi)較流行(xing)
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(you)GIA證書(shu)的(de)鉆石,這種鉆石以后想要賣(mai)掉的(de)話更加(jia)保值,也更加(jia)容易賣(mai)出(chu)去的(de)。