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- Exclusive collection crystals and minerals
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Star sapphire
Asteric sapphire is a rare variety of sapphire that is known for its asterism phenomenon, an effect in which a star shape is formed on the surface of the stone. This effect is due to the presence of fine needle-like inclusions of the mineral rutile, which are organized into a star pattern when the stone is cut. Asteric sapphire, or asterism sapphire, is a rare variety of sapphire that has this effect. It is often found in colors such as blue, purple or black. This phenomenon is valued among collectors and is used to make unique jewelry.