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2. Black Star sapphire - Wikipedia

   en.wikipedia.org/wiki/Black_Star_sapphire

   Black star sapphire, also known as 'natural star sapphire' is a type of corundum (aluminum oxide). It is usually cut into a dome shape to show a star feature. If it is cut with a flat or almost flat face, then a golden colour is revealed. The chemical composition and features for black star were analyzed in the Journal of Gemmology. [citation ...

3. Asterism (gemology) - Wikipedia

   en.wikipedia.org/wiki/Asterism_(gemology)

   The star-effect may be also caused by the inclusions of hematite. In black star sapphire hematite needles formed parallel to the faces of the second order prism produce asterism. Some star sapphires from Thailand contain both hematite and rutile needles forming a 12-ray star. [3] Star-stones were formerly regarded with much superstition. [1]

4. Stonesetting - Wikipedia

   en.wikipedia.org/wiki/Stonesetting

   A bezel set sapphire. The earliest known technique of attaching stones to jewelry was bezel setting. A bezel is a strip of metal bent into the shape and size of the stone and then soldered to the piece of jewelry. The stone is then inserted into the bezel, and the metal edge of the bezel pressed over the edge of the stone, holding it in place.

5. List of individual gemstones - Wikipedia

   en.wikipedia.org/wiki/List_of_individual_gemstones

   Logan Sapphire; Star of Bombay, given to Mary Pickford by Douglas Fairbanks, Sr; Star of India; Stuart Sapphire; Black Star of Queensland; Star of Adam, with a weight of 1,404.49 carats (280.898 g), it is the largest star sapphire in the world. Queen Marie of Romania Sapphire

6. Black Star of Queensland - Wikipedia

   en.wikipedia.org/wiki/Black_Star_of_Queensland

   The Black Star sapphire is an oval-shaped gemstone cut as a cabochon like all other star sapphires. The center of the star is much bigger and brighter than normal star sapphires. The bright six-ray star is set in a completely black background. The beauty of the stone is further enhanced by its white gold setting. The large black stone is ...

7. The 65 Best Leftover Cyber Monday Deals to Score ASAP ... - AOL

   www.aol.com/35-best-black-friday-deals-221400280...

   Mejuri. PureWow Fashion Editor Abby Hepworth gave us the 411 on lab-grown gems years ago. So, if you're thinking of buying this dazzling tennis bracelet made with lab-grown white sapphires (that ...