Synthetic star rubies and sapphires were manufactured by the Linde Air

德国弗赖翁WIEDE'S CARBIDWERK 制作的合成星光蓝宝石和红宝石

A star Sapphire created using the flame-fusion process (Verneuil method) by Linde of Ohio, USA. The 6-rayed asterism stands out sharply against the

Linde blue synthetic star Sapphire cabochon. 1.73 carats.

PDF) Well-Formed Tsavorite Gem Crystals from Tanzania

Lore KIEFERT, Owner, PhD

Synthetic star rubies and sapphires were manufactured by the Linde

PDF) Gem-Quality Haüyne from the Eifel District, Germany

Star Sapphire: A Start to Finish Guide – Precision cut Ceylon

Synthetic star rubies and sapphires were manufactured by the Linde

Dual-Color Double Stars in Ruby, Sapphire, and Quartz: Cause and

PDF) Beryl Gem Nodules from the Bananal Mine, Minas Gerais, Brazil

Trace-element composition (ppmw) of mica of the margarite-ephesite