RapNet


Rapaport News

 

Rough Markets

 

高級搜尋
最新文章
視訊
功能
新聞
挖掘
原石市場
拋光市場
製造
零售

Lab Finds Man-Made Sapphires Posing as Diamonds

Use of the stones in melee is unusual, says Gemological Science International.
May 28, 2019 8:16 AM   By Rapaport News
Print 列印 Facebook Facebook Twitter Twitter 共用 Share


RAPAPORT... Gemological Science International (GSI) has identified undisclosed lab-grown white sapphire melee set in pendants that had been submitted as natural-diamond jewelry.

The pendants, which GSI’s New York lab had received for a routine screening, contained near-colorless synthetic sapphires, placed next to natural white diamonds.

“While the industry has taken considerable steps to address this issue, the problem still persists,” GSI president and co-founder Debbie Azar said Monday. “What makes this finding unusual and very atypical was the use of melee-sized synthetic white sapphires.”

Many cases in which labs identify stones that are not what they had been submitted as involve undisclosed lab-grown diamonds in place of natural. However, there have been cases involving other materials. Last year, the Gemological Institute of America spotted a 9.71-carat synthetic moissanite stone, which was submitted to its lab as a natural rough diamond. In 2017, two large, near-colorless rough stones sent to HRD Antwerp as natural diamonds turned out to be topaz.

Image: A GSI lab. (Gemological Science International)
Tags: Debbie Azar, Gemological Institute of America, Gemological Science International, GIA, GSI, HRD Antwerp, Rapaport News, Synthetic Sapphires
Similar Articles
Comments: (0)  Add comment Add Comment
Arrange Comments Last to First



電洽: 1-702-893-9400
Member License Agreement   RapNet Trading Rules & Code of Conduct    私隱政策  
  
twitter twitter
關於 Rapaport
廣告業務