DiamondBuzz
Israel Diamond Exchange quits WFDB amid tariff dispute
The Israel Diamond Exchange (IDE) has suspended its membership in the World Federation of Diamond Bourses (WFDB), citing dissatisfaction with the organisation’s conduct during the ongoing US import tariff crisis, Rapaport News reported.
In a letter to WFDB Secretary-General Rony Unterman on 8th April, the IDE board said the decision followed unanswered requests for information and actions that had harmed Israel’s diamond trade. IDE President Nissim Zuaretz told Rapaport the move was triggered by WFDB President Yoram Dvash’s comments in Calcalist, where he criticised country-specific lobbying and promoted a global strategy for tariff exemptions.
Zuaretz accused Dvash of trying to take credit for advocacy led by the World Diamond Council (WDC), potentially jeopardising Israel’s own efforts. Dvash denied the claims, telling Rapaport they were “untrue and frankly absurd,” and emphasised the WFDB’s ongoing collaboration with the WDC.
Zuaretz said the IDE would shift focus to partnerships with the WDC and the International Diamond Manufacturers Association (IDMA), while also saving over $29,000 in annual fees. Dvash described IDE’s withdrawal as “rash,” warning it could weaken global unity at a critical time for the industry.
DiamondBuzz
CVD Synthetic Fashioned To Imitate A Rough Natural Diamond
The Near-Colorless Stone Is Believed To Be The First Time Creators Of A Synthetic Chemical Vapor Deposition (CVD) Diamond Have Shaped It To Resemble A Rough Diamond
The 6.87-carat near-colorless CVD diamond was shaped to resemble a natural rough octahedral crystal but showed distinct synthetic features under microscopic and spectroscopic analysis.GIA’s tests confirmed the stone’s synthetic origin, noting polishing marks, facet junction roughness, and luminescence patterns inconsistent with natural diamonds.
No evidence currently suggests widespread substitution of synthetics for rough natural diamonds, but existing detection tools could be adapted if such cases increase.
The near-colorless stone is believed to be the first time creators of a synthetic chemical vapor deposition (CVD) diamond have shaped it to resemble a rough diamond, according to an article in the spring issue of the institute’s Gems & Gemology quarterly journal.
Upon investigation with the use of raman spectroscopy, the results confirmed that the material was a diamond, with its near-octahedral shape similar to that of a natural rough crystal. Further analysis showed that it was not a true octahedron, as only one set of opposing faces was parallel. Microscopic observation under differential interference contrast revealed extremely flat faces marked mainly by parallel polishing lines, unlike the growth steps and trigons typically seen on natural octahedral faces. The facet junctions were extremely rough, possibly due to measures taken to improve the color, after which the main faces appear to have been repolished, the institute explained.
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