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  2. Black Star sapphire - Wikipedia

    en.wikipedia.org/wiki/Black_Star_sapphire

    Black star sapphire is found in Thailand, Cambodia, Tanzania, Australia, Sri Lanka, Sierra Leone, Laos and many other countries, although supply is growing continuously exhausted, and mine yields have decreased. The mines on the Thai/Cambodia border were reported to be almost exhausted of clear high-value gems by the late 1990s.

  3. Black Star of Queensland - Wikipedia

    en.wikipedia.org/wiki/Black_Star_of_Queensland

    Black. The Black Star of Queensland, also known as the Brimstone of Queensland, named after its nature and place of origin, is a 733-carat (146.6 g) black sapphire, and was the world's largest gem quality star sapphire until The Star of Adam was discovered. The Black Star sapphire is an oval-shaped gemstone cut as a cabochon like all other star ...

  4. List of sapphires by size - Wikipedia

    en.wikipedia.org/wiki/List_of_sapphires_by_size

    Star Blue Anonymous owner Black Star of Queensland: Australia 1938 733 carats (146.6 g) Star Black Anonymous owner Star of India: Sri Lanka 563.4 carats (112.68 g) Star Blue-gray American Museum of Natural History, New York Queen Marie of Romania: Sri Lanka 478.68 carats (95.736 g) Cushion Blue Anonymous owner Logan Sapphire: Sri Lanka

  5. Sapphire - Wikipedia

    en.wikipedia.org/wiki/Sapphire

    An uncut, rough yellow sapphire found at the Spokane Sapphire Mine near Helena, Montana. Sapphire is one of the two gem-varieties of corundum, the other being ruby (defined as corundum in a shade of red). Although blue is the best-known sapphire color, it occurs in other colors, including gray and black, and also can be colorless.

  6. Star of India (gem) - Wikipedia

    en.wikipedia.org/wiki/Star_of_India_(gem)

    Star of India. The Star of India is a 563.35- carat (112.67 g) star sapphire, one of the largest such gems in the world. [1] [a] It is almost flawless and is unusual in that it has stars on both sides of the stone. The greyish-blue gem was mined in Sri Lanka [3] and is housed in the American Museum of Natural History in New York City .

  7. 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. Star-stones were formerly regarded with much superstition.

  8. Serendipity Sapphire - Wikipedia

    en.wikipedia.org/wiki/Serendipity_Sapphire

    Sri Lanka. Estimated value. Est.US$100 million. Serendipity Sapphire is the world's largest star sapphire cluster. It weighs 510 kilograms (2,600,000 carats). [1] It was found in Kahawatte in the Ratnapura District, Sri Lanka, in July 2021. Its worth is estimated to be up to US$100 million. [1] [2]

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    Latitude Run 2-Person Square Outdoor Dining Set with Cushions. $150 $250 Save $100. Whether you have a small patio or just want some extra seating in the front garden, this two-person outdoor ...

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