Polished diamond news

  • Alrosa "Considering $50m Polishing Plant in India"
    on 16 December 2025 at 12:00 am

    Alrosa is reportedly considering a move to establish its own diamond polishing facility in India. The plant would be located in Surat or Jaipur, at an estimated cost of $50m, and it would represent Alrosa's first overseas expansion, according to the...

  • GIA to Determine Origin of Opal, Peridot, and Demantoid Garnet
    on 14 December 2025 at 11:00 am

    The Gemological Institute of America (GIA) is expanding its origin-determination services to include opal, peridot, and demantoid garnet from January. The origin of these gemstones can drastically affect their value. Black opal from Australia is more ...

  • Alrosa Upbeat, Despite Tariffs and Lab Growns
    on 14 December 2025 at 9:00 am

    Alrosa CEO Pavel Maryinchev gave a remarkably upbeat assessment of the natural diamond market, telling the Times of India (TOI) that the industry is adapting well to US tariffs and that the threat from synthetic diamonds is diminishing. Maryinchev....

  • Sotheby's Landmark Jewelry Sale Raises $44m
    on 10 December 2025 at 5:00 am

    Sotheby's marked the opening of its new global headquarters in New York by holding its first evening jewelry auction in a decade, achieving total sales of $43.9m. The sale, on 8 December, featured A Legacy of Elegance: Jewels from an Exceptional ...

  • Tanishq Opens Biggest US Store, Taps into Indian Diaspora
    on 9 December 2025 at 6:00 am

    Tanishq, the jewelry chain headquartered in Bengaluru, has opened its largest store in the US - as it taps into an Indian diaspora estimated at 4.5 m people. The new 5,000 sqft showroom in Tysons, Virginia, brings the brand to the Greater Washington, D.C...

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