國際證書的背面條款知多少?– PART 1

寶石獵手大未 中國彩色寶石網聯合創始人,首席寶石學家

2020-02-12

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大家對GRS證書已經非常熟悉了,證書內頁的主要內容比如寶石種類、重量、形狀、尺寸、切割什么的不用贅述,對顏色和產地的描述大未在之前專門的文章里面也詳細談過(復習請點擊>>怎樣讀懂寶石證書),今天要來談的是GRS證書的背面條款。


 

GRS證書封面/封底


當你將GRS證書內頁從封套中取出,翻轉過來就會發現背面滿滿的印刷了密密麻麻的英文,而這些英文恰恰就是牽涉到寶石的處理優化等核心信息的條款解讀,下面就讓我們仔細來了解一下吧(大未直接在原文的英文下面做解讀)。


GRS證書內頁背面


 Enhancement Disclosure優化(處理)披露Ruby and Sapphire – 紅寶石和藍寶石No indication of thermal treatment – 未見熱處理痕跡No gemological constraints (for instance no altered inclusions) are present which would indicate that a heat enhancement process was applied.不存在任何證據(例如變形的內含物)來證明寶石經過加熱處理。


緬甸天然未加熱鴿血紅紅寶石證書,意彩石光

馬達加斯加天然未加熱藍寶石證書,意彩石光


H

Enhanced by heat (no residues present)H代表經過加熱處理(沒有殘留物)

大未注釋:這個殘留物指的是在紅藍寶石的熱處理中添加的硼砂borax等助溶劑的殘留或者再結晶痕跡,這些殘留物有的會留在寶石的縫隙中


H(a)

Enhanced by heat –residues insignificant (indication of very small residues within fissures only)

H(a)代表經過熱處理,并且有極微少的殘留物(在寶石的縫隙中有極微少量的殘留物)

Clarity and/or color are enhanced by heat. The applied type of enhancement for the ruby or sapphire under consideration is, according to the opinion of GRS Gem Research Swiss lab, considered a permanent enhancement. Extremely small residues of glass-like materials present in cavities or as isolated, extremely small residues in fissures affecting the weight of the gemstone less than approximately 0.001 carat.

凈度和/或顏色經過熱處理加強,此處的熱處理被GRS認為是一種永久的優化處理方式,極微少的玻璃狀物質殘留于寶石表面礦坑或者內部的裂隙中,這些殘留物的重量一般對寶石重量的影響小于0.001克拉

‘A-type treatment’ such as present in the ruby or sapphire under consideration are, according to the opinion of GRS Gem Research Swiss lab, permanent enhancements. Enhancements such as ‘type A’ are considered permanent and will always be mentioned on the front page of the report.

在紅藍寶石中的A類型的優化處理被GRS認為是一種永久的優化處理方式,這種類型的優化處理方式一定會在證書的第一頁予以載明。 


H(b)

Enhanced by heat –minor residues are present (within fissures only)

H(b)代表經過加熱處理,僅在在寶石的內部縫隙中可見微少量的殘留物

Clarity and/or color are enhanced by heat. Minor residues of glass-like materials are present in fissures. Enhancements such as‘B-type treatment’ are considered permanent and will always be mentioned on the front page of the report.

凈度和/或顏色經過熱處理加強,微少的玻璃狀物質殘留于寶石內部的裂隙中,B類型的優化處理,被GRS認為是一種永久的優化處理方式,這種類型的優化處理方式一定會在證書的第一頁予以載明。 


H(c)

Transitional grade between H(b) and H(d)

H(c)是介于H(b) H(d)之間的過渡級別

Clarity and/or color are enhanced by heat. Residues of glass-like materials are present in cavities and/or in fissures. Enhancements such as ‘type C’ are considered permanent and will always be mentioned on the front page of the report.

凈度和/或顏色經過熱處理加強,玻璃狀物質殘留于寶石表面礦坑和/或內部的裂隙中,C類型的優化處理,被GRS認為是一種永久的優化處理方式,這種類型的優化處理方式一定會在證書的第一頁予以載明。


 H(d)

Enhanced by heat – significant and deep reaching residues present within fissures and cavities filled with lead glass (also known as ‘Composite Ruby’)

H(d)代表經過加熱處理,在寶石的表面礦坑及內部裂隙中可見大量深入其內的鉛玻璃填充物(這種也被成為“鉛玻璃填充復合紅寶石”)


H(Be)

Enhanced by heat and light elements (such as beryllium)

H(Be)指經過加熱以及輕金屬元素處理(例如鈹)

Clarity and/or color are enhanced by heat and diffusion of light elements such as beryllium, inducing color zoning by internal migration of trace elements (incl. beryllium) and defects, andformation of color centers. (Not corresponding to conventional surface diffusion treatment), Treatment is permanent. Recutting requires special careif thin orange rims are confined to the surface.

顏色和/或凈度經過加熱及輕金屬元素例如鈹的深度擴散處理,通過使寶石內部的微量元素和結構缺陷發生遷移改變而導致產生了色心致色。(這和傳統的表面擴散致色不同),這種處理是永久性的,如果橙色的色心邊緣僅存在于寶石表面,重切時要特別小心以免顏色(被打磨掉)。


HPHT

Enhanced by high pressure and high temperature (HPHT)

HPHT指經過高溫高壓處理

Color enhanced by high heat under relatively high pressure (not comparable to HPHT treatment applied to diamonds).顏色通過在相對高壓下的高溫所致(和高溫高壓處理的鉆石并不存在可比性) 


E

Clarity and/or color are enhanced by heat (minor residues of foreign solid materials may be present within fissures and/or cavities).

E代表顏色和/或凈度經過熱處理(在寶石內部縫隙和/或表面礦坑可見微量外來的固體殘留物)

This comment is not in use anymore but might be seen on older reports.

這個標注只出現在老版本的證書中,現在證書中不再使用 

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