DiamondBuzz
Revolutionizing Luxury: Rupesh Jain to launch Lab-Grown Diamond Collection Brand
Rupesh Jain, the founder of Candere by Kalyan Jewellers, is making a return to the jewellery industry with a new venture focused on lab-grown diamonds (LGDs). After successfully scaling Candere, an online jewellery brand he founded in 2013, Jain sold the company to Kalyan Jewellers in a phased acquisition, with the final stake transfer completed in 2024. Now, he is betting on LGDs as the next big shift in the luxury jewellery market, launching his new brand this April during Akshaya Tritiya.
Lab-grown diamonds have been gaining global traction, and in India, the category is still in its early stages but is witnessing significant momentum. Companies like Giva, Avira Diamonds, and Fiona Diamonds have entered the space. Last month, Priyanka Gill, seasoned entrepreneur and co-founder of Good Glamm Group, announced the launch of her lab-grown diamond venture, Coluxe.

Comparing the prices of LGDs with natural diamonds, Jain explained, “A natural diamond priced at Rs 100, an equivalent LGD costs just Rs 20-25, making high-quality solitaires accessible to a much larger consumer base.”
Highlighting the massive opportunity in the LGD segment, driven by Gen Z and millennial consumers, Jain said that he aims to position the new venture as a premium yet accessible brand. “We aim to offer product quality comparable to global luxury houses like Cartier and Tiffany, but at a more competitive price,” he commented.
The company will follow an online-first model before expanding into offline retail. The startup is currently bootstrapped, with Jain focusing on assembling a strong team, including senior hires for merchandising and a tech agency to drive digital expansion. Internationally, the demand for LGDs is already established, and Jain believes India is well-positioned to become a major supplier and brand builder in this space, thanks to government support, manufacturing ecosystem, and government backing.
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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