For those who wish to explore the literature of inclusions in gemstones further, we have selected the following articles and books that are of particular merit. Most of these are cited in the Lotus Gemology Hyperion Inclusion Database, but are listed below in a more convenient summary format. Many of the links will allow you to download a PDF copy of the original article.
An orangish pink “padparadscha” sapphire was submitted for testing at Lotus Gemology’s Bangkok laboratory. Testing showed a number of conflicting features that suggested the gem was a cleverly treated synthetic pink sapphire designed to imitate natural padparadscha.
When it rains red, it doesn't simply pour. It bleeds. Following closely on the heels of the ruby strikes in Mozambique, a major new find of the crimson stone is made in Madagascar.
The difference between a synthetic, treated, or untreated natural gemstone could mean a difference of thousands, even millions of dollars. Thus, it is no wonder that laboratories are becoming more in demand than ever. With treatments become increasingly sophisticated, gemologists and traders search for new tools to help identify stones.
A brief description of the color types for ruby and sapphire used at Lotus Gemology.