GIA 检测迄今最大的一颗抛光实验室合成钻石，重34.59ct

gia benzhoufabuyifen34.59ctzumulvxingqiegehechengzuanshidejiancebaogao，zheishigaijigouqijinjiancedezuidayikepaoguanghechengzuanshi，laiziyinduhechengzuanshishengchanshang ethereal green diamond。

34.59ctzumulvxingqiege cvd hechengzuanshi，wei g sehe vs2 jingdu

genju gia chujudejiandingbaogao，zheike34.59cthechengzuanshidadao g se，vs2 jingdujibie，wei type iia xingzuanshi，chicunwei24.94x13.95x9.39mm。yanjiurenyuanzaijingtineibufaxianhechengzuanshichangjiandeheisebaoguoti，xianweijingguanchaxianshitouguotaimiankeyikandaoweiruodeyouzhuanghuobolangwen，yeshi「huaxueqixiangchenjifa」（cvd）hechengzuanshidechangjiantezheng。

GIA 此前检测过最大的 CVD 合成钻石重16.41ct，采用公主方形切割，为 G 色和 VVS2 净度，由上海正时科技有限公司生产。

16.41ctgongzhufangxingqiege cvd hechengzuanshi，wei g sehe vvs2 jingdu

muqianshiyanshihechengzuanshidepeiyufangfazhuyaoyouliangzhong——gaowengaoyafa（hpht）xuzai10gpa yishangyali、2000℃-3000℃ gaowenhuanjingxia，rangshimozhongdetanyuanzizhongxinzuhechengzuanshijiegou；huaxueqixiangchenjifa（cvd）zeyoujiawanranshaochanshengdetanyuansuchenjiercheng，tanyuanziyoulihoufuzheyuzuanshibopianshang，rangzuanshishengzhang。

muqianbushaojigoujuntigonghechengzuanshijiandingfuwu，bingkechujujiandingzhengshu，erweilemingqueyutianranzuanshidequbie，yibanhechengzuanshizhengshudeyangshi、yansedenghetianranzuanshizhengshuyoumingxianbutong，zhengshushangyehuimingquebiaomingqiweihechengzuanshi，fangbianxiaofeizhebianren。