Melee diamonds can be efficiently screened for synthesis and treatment using infrared absorption spectroscopy, DiamondView imaging, and microscopy.

Examination of a pink-purple spinel revealed what appeared to be a spinel crystal inclusion.

Nine demantoids reportedly from a new deposit in the Khuzdar area in Pakistan’s Baluchistan province were recently examined.

A report on what appears to be the first non-nacreous beaded cultured pearl examined by a laboratory.

Samples composed of lawsonite pseudomorphs were coated to make them appear deep green and imitate chromian lawsonite crystals.

An oval-shaped faceted stone resembling an emerald proved to be a doublet with a beryl top and a topaz bottom.

A very large diamond with a Fancy Vivid yellow color was identified as artificially irradiated.

Ten loose pearls with interesting shapes and internal growth features were from Pteria-species mollusks.

ある大手宝石鉱山会社が、世界中で良質な宝石を取得し販売する方法を変えようとしています。

Review of Hazel Forsyth’s The Cheapside Hoard: London's Lost Jewels..

Diamond and jewelry demand in the U.S. rose an estimated 3% to 4% this past holiday season, but business was uneven.

宝石商と宝石鑑定士は研磨されたダイヤモンドの一部を説明するために特定の規定用語を使います。 若干の形や比率の寸法もラウンドブリリアントダイヤモンドのカットグレードに影響を与えます。

Review of Damiani: Alchemy of Desire.

GIAのチームと共にザンビアの Kagem（カジェム）エメラルド鉱山を訪れ、世界最大級とされるエメラルド鉱床の概要を見てみましょう。 この操業形態は、カラーストーン業界に革命を起こしています。

Retail analysts puzzle over the reported steep drop in post-Thanksgiving shopping numbers; online sales have risen strongly.

Review of Yvonne J. Markowitz and Denise Doxey's Jewels of Ancient Nubia.

モザンビークのモンテプエスルビー鉱山は、今世紀最も重要なルビーの採掘地です。現地を訪れたGIAチームの報告をお伝えします。

ニューヨークのメトロポリタン美術館にて展示される、インドとインドにインスピレーションを受けた宝飾品のコレクションを観察します。

Review of Mimi Lipton's Untamed Encounters: Contemporary Jewelry from Extraordinary Gemstones.