Polished diamond news

  • 31.77-ct Paraiba Tourmaline could Fetch $650,000
    on 1 June 2026 at 4:00 am

    A 31.77‑carat Paraiba tourmaline will be offered for sale with an estimate of $550,000 to $650,000 at Phillips New York. It is one of the "newest" gemstones. Tourmaline was recognized as a distinct mineral species back in the mid-1700s but Paraiba tourmaline...

  • Signet Buys The Clear Cut to Boost Blue Nile
    on 31 May 2026 at 6:00 am

    ignet has bought The Clear Cut, a high-end, online-only retailer for an undisclosed sum, and will integrate it into its Blue Nile brand. It's part of Signet's "Grow Brand Love" turnaround strategy, unveiled by CEO J.K. Symancyk in March 2025, aimed at ...

  • GIA Buys 30% Stake in Tracr
    on 31 May 2026 at 12:00 am

    GIA is to buy a 30% share of Tracr, the blockchain-based traceability platform developed by De Beers. The deal, for an undisclosed sum, is likely designed to expand Tracr's reach beyond De Beers stones so it can evolve across the industry. For GIA it reinforces....

  • African Producers: Use 4Cs Only for Natural Stones
    on 28 May 2026 at 4:00 am

    African diamond producers are calling for lab growns to be measured in grams rather than carats, and for 4Cs grading to be reserved only for natural stones. The African Diamond Producers Association (ADPA) announced the move on Monday (25 May) ...

  • India Now Exports More Lab Grown Carats than Natural
    on 26 May 2026 at 5:00 am

    India's export volume of polished lab growns has overtaken that of natural diamonds for the first time. The tipping point came during the year to March 2026, according to figures published by the GJEPC (Gem and Jewellery Export Promotion Council)....

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