A Synthetic Diamond Overgrowth on a Natural Diamond
Dyed Yellow Beaded Freshwater Cultured Pearls Imitating South Sea Cultured Pearls
A yellow cultured pearl necklace is compared to the work of a producer specializing in freshwater pearls of all colors.
Quarterly Crystal: Molybdenite Phantoms in Quartz
Raman analysis identifies unusual inclusions in quartz.
Sapphires from Northern Ethiopia
A new source of sapphires is found in the Tigray region of Ethiopia.
Partially Hollow Tridacna Blister Pearls with Shells Attached
Blister pearls attached to shells are seen in both the Bangkok and New York laboratories.
Photoluminescence Mapping of Optical Defects in HPHT Synthetic Diamond
Demonstrates the importance of this method in identifying diamond treatments, based on the
analysis of PL maps acquired from a brownish orange HPHT synthetic diamond.
Diamond with Unusual Fluorescence Distribution
A submission to the New York lab yields an unexpected reaction to long-wave UV radiation.
Chart: Inclusions in Natural, Synthetic, and Treated Sapphire
Provides a visual guide to the internal features of natural, synthetic, and treated sapphires.
Big Sky Country Sapphire: Visiting Montana’s Alluvial Deposits
Documents a visit to the upper Missouri River and Rock Creek sapphire mining areas.
Colorful Chatoyant Glass
A devitrified glass reminiscent of Victoria Stone is seen during the Tucson gem shows.
Christmas Tree–Shaped Internal Feature In Diamond
A laser manufacturing remnant in a Fancy yellow diamond creates a unique specimen.
春 2017年オークション更新: これまで最も高価な宝石やその他レコード
2017 オークション シーズン見た 2 つのレコードの重要な価格下落と固体、春上がっていないトップの価格は軒並み宝石します。
春 2017年オークション更新: これまで最も高価な宝石やその他レコード
2017 オークション シーズン見た 2 つのレコードの重要な価格下落と固体、春上がっていないトップの価格は軒並み宝石します。
2017年のラスベガスショーでの売上高が不安定な中、デザイナーとダイヤモンドが市場を先導
デザイナーは市場のトレンドに対応し, ダイヤモンドの需要は予想よりも好調でした。また、ホリデーシーズンに向けたダイヤモンドのマーケティングキャンペーンでは資金調達の増加が期待されます。
歴史的書籍:アーカンソー州のダイヤモンド
2017 Vegas Outlook: Decent, But Cautious, Buying
Buyers at the 2017 JCK Show will likely stick to their open-to-buy plans, but take few chances on new lines or extra stock. Plus: An overview of retail sales, auction headlines.

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