Our reports feature color types because of client requests. What follows is the Lotus Gemology Guide to Color Types. Our definitions are firmly rooted in both history and direct experience, while at the same time understanding that definitions need to be flexible enough to account for gems from recent sources that were unknown to the ancients. Lotus Gemology has been involved with historical research on ruby and sapphire for nearly four decades, and coupled with our tremendous experience working with these stones, is well-equipped to define these color types. This began with padparadscha sapphire, and has now spread to other varieties, including ruby and blue sapphire. Ruby & Sapphire Color Types Ĩ April 2015 (updated 14 January 2021)-In recent years, gemological labs have been asked to issue color types on reports.
A brief description of the color types for ruby and sapphire used at Lotus Gemology.
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