This is a flame fusion star sapphire that was made in a laboratory. Whether a sapphire comes from the earth or from a lab it has the same optical and physical properties, the same chemical composition, and the same beauty! Well, not true- synthetics tend to be more beautiful because they can be made in a "perfect" environment. In a lab the there are no impurities to spoil the perfect stone, unlike in the earth.
You might have heard of Union Carbide's signature synthetic flame fusion star sapphire called the "Linde Star". It had a script "L" on the bottom of each stone, and they were very popular for quite some time but are no longer produced. This stone is the same thing exactly, just without the Union Carbide name. It weighs 3.82 carats and the dimensions are 8.97mm x 4.13mm deep.
If you enjoy the beauty of fine quality blue sapphire but don't want to pay $10,000 for one, why not give a synthetic sapphire like this one a try? You will be delighted with the quality of the star and the beautiful blue color, and the cost is very reasonable!
This auction will run for 24 hours with a starting bid of 2.5BTC and an increment of .5BTC. Good luck!