DiamondBuzz
Diamond market roundup: Domestic and overseas demand increasing, Chinese buyers slowly returning
United States:Trading steady amid shortages in select categories. Market still memo-centric, with little inventory-buying. Retailers seeking 2.50 to 2.99 ct., F-H, VS-SI, rounds and fancies with no center black, paying premiums due to goods’ scarcity. Melee in demand. US February inflation better than expected at 2.8%.
Belgium:Mood improving following Hong Kong show. Dealers cautiously optimistic, as goods are starting to move. Large stones in short supply. Belgium polished exports for February down 24% year on year at $783.7 million, with volume declining 20% to 297,700 cts.
Israel:Market sentiment more positive after dealers report sales of 3 ct. and larger diamonds at Hong Kong show. Low inventories supporting prices, with some price increases in fancy shapes.
India:Manufacturers reporting better Hong Kong show than anticipated, boosting market mood. Domestic and overseas demand increasing. Chinese buyers slowly returning, especially for small goods, but quantity of purchases still limited. Polished production remains low, supporting prices and sales.
Hong Kong:
Industry reflecting on show, which beat expectations but was slow relative to pre-pandemic times. Many Indian trade buyers. Dealers following up on sale leads. Fair attracted purchasers from around the world, but few Chinese clients present. Demand was very specific, with exhibitors holding prices firm amid high replacement costs.
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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