Blog: Gemmological news
Diamonds and gemstones: guides to choosing, treatments, care and gemmological news.
3 articles in category “Gemmological news” · reset filters
Ethiopia, a new Paraíba tourmaline source: GIA and Gübelin’s 2026 announcement
On 27 August 2026, GIA and Gübelin confirmed a new copper-bearing tourmaline source. Understand the announcement and its limits.
What 2025 FTIR research adds to detecting heat in ruby and sapphire
GIA research explains infrared signals in corundum. Understand why a single indicator is not a universal treatment verdict.
GIA and laboratory-grown diamonds: the 2025 Premium / Standard change
GIA announced descriptive assessment for D–Z laboratory-grown diamonds. Read documents without confusing different reporting systems.
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