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Ruby (2) Alexandrite (1) Sapphire (1) Spinel (1)

XClear Selections

LCM reveals traces of catalyst and step-like growth marks.

Observation of Etched Surface Micro-Features on HPHT Synthetic Diamonds Using Laser Confocal Microscopy

Xuxu Wu, Taijin Lu, Shi Tang, Jian Zhang, Zhonghua Song, Hua Chen, Jie Ke, and Mingyue He, August 9, 2018

Laser confocal microscopy, a very reliable method of revealing surface micro-features, is used on an HPHT synthetic diamond to reveal growth structures.

Large Colourless HPHT Synthetic Gem Diamonds from China

Wuyi Wang and Thomas Moses, April 28, 2016

A report on the HPHT growth of large, gem-quality colourless synthetic diamonds in China.

This specimen was revealed to be a synthetic star sapphire.

Unusual Combination of Inclusions in Synthetic Star Sapphire

Pragati Verma, July 31, 2015

A hexagonal boundary, usually found in natural material, is observed in a synthetic star sapphire.

Verneuil-grown synthetic spinel with unusual short-wave UV reaction

Unusual Short-Wave UV Reaction in Synthetic Blue Spinel

Pragati Verma, January 30, 2015

A blue synthetic spinel grown by the Verneuil process displayed the short-wave UV reaction of a flux-grown sample.

Unusual Composite Ruby Rough

Meenakshi Chauhan, January 30, 2015

In this composite, synthetic ruby rough attached to two natural ruby slabs was fashioned to imitate natural material.

14 ornaments of coral veneer glued to matrix

Composite Coral Veneer Glued to Artificial Matrix

Haibo Li, Zhoujing Yue, Jie Liang, Taijin Lu, Jun Zhang, and Jun Zhou , July 25, 2014

Items presented as red coral are revealed by testing to be composite coral veneers over an artificial matrix.

Assemblage of Synthetic Ruby in Calcite Matrix

Nazar Ahmed and Sutas Singbamroong, July 25, 2014

Material set in a calcite matrix and represented as natural ruby is proven to be synthetic.

Phosphorescence in Synthetic Sapphire

Meenakshi Chauhan, October 17, 2013

Rare phosphorescence was observed in a synthetic sapphire, which had unusual properties not indicative of a particular growth method.

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