DiamondBuzz
Alrosa is betting on AI to uncover diamond deposits
Russia’s diamond giant Alrosa is betting on artificial intelligence to uncover deposits that have long eluded geologists.
The company revealed last week that it has created a digital system designed to pinpoint exploration zones with far greater precision, potentially reducing both the cost and the time traditionally required for diamond prospecting.
Explaining the rationale behind the initiative, Alrosa noted that most of the planet’s major kimberlite pipes—the richest sources of diamonds—were discovered decades ago. Since then, fresh finds have become increasingly rare.
The new platform draws on more than half a century of geological records, processing the data through neural network models to highlight areas still holding promise. Executives say the approach could mark a breakthrough in locating mineral resources.
Alrosa’s move comes amid mounting financial strain. Western sanctions, particularly from the G7, have curtailed the company’s sales channels, forcing temporary mine closures, a reduction in output, and even the transfer of unsold inventory to state reserves. Against this backdrop, the AI initiative signals both an urgent need for innovation and a long-term play to secure future resources.
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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