These stones attracted a premium at sale because at the time they classified for a special name. There are hundreds if not thousands of gemstones already in the market that have been classified as Pigeons blood Ruby or Royal blue Sapphire. This may decrease supply and increase the price but lets look at what else it could do.
The Sapphire must be untreated (just like Rubies, heated Sapphires are widely accepted in the trade).īased on the above criteria it means that very few Rubies or Sapphires will classify as either a Pigeons blood Ruby or a Royal blue Sapphire.Just like Rubies there cannot be any modifiers. Colour most be an intense, saturated and a homogeneous Blue.Only Rubies from Burma are eligible (based on a criteria that Rubies from other regions contain more iron which suppresses fluorescence).Only Rubies that have not been treated in anyway (this includes heat treatment which is widely accepted by the trade).The Ruby most show strong fluorescence under UV light.Minute traces of purple colour are acceptable in both the Ruby and Sapphire but there must not be any dark modifier. There cannot be an visible dark inclusions that modify the colour. Colour most be an intense, homogeneous and saturated Red.The New Classification Pigeons Blood Ruby They are SSEF and Gübelin, both of who regularly test and report on the fine gemstone being sold at major auctions like Sotheby’s or Christie’s. The two labs who have created this new classification are both highly respected.
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