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The ring binds below to a layer of metal ions and hydroxyls or halogens, ... (1.3536 oz; 38.374 g), is the world's largest cut tourmaline. ...
As of 1999, the world's largest known naturally occurring crystal of any mineral is a crystal of beryl from Malakialina, Madagascar, 18 m (59 ft) long and 3.5 m (11 ft) in diameter, and weighing 380,000 kg (840,000 lb). [13]
The Cullinan Diamond is the largest gem-quality rough diamond ever found, [2] weighing 3,106 carats (621.20 g), discovered at the Premier No.2 mine in Cullinan, South Africa, on 26 January 1905. It was named after Thomas Cullinan, the owner of the mine. In April 1905, it was put on sale in London, but despite considerable interest, it was still ...
The world's largest Fancy Vivid Pink. Previously named Pink Legacy, it was sold by Christies on 13 November 2018, for 50.3 million Swiss francs ($50 million, £38.5 million), to Harry Winston . Found in a South African mine around 100 years ago and has likely not been altered since it was first cut (rectangular cut) in 1920, and once owned by ...
Engagement ring trends evolve year after year. Private jeweler Anna P. Jay said elongated stones and thicker bands will be popular in 2025. Colorful stones and personalized details are on the rise ...
This is a partial list of the largest non-synthetic diamonds with a rough stone (uncut) weight of over 200 carats (40 grams). [1] The list is not intended to be complete—e.g., the Cullinan (formerly Premier) mine alone has produced 135 diamonds larger than 200 carats since mining commenced.
Samarian Spinel, the world's largest spinel; Menshikov Ruby, the world's second largest spinel set on top of the Great Imperial Crown of Russia; Timur Ruby, believed to be a ruby until 1851, hence its name; Black Prince's Ruby, the famous spinel mounted on the Imperial State Crown of the United Kingdom
The three smaller gems were set in a clip and the largest was mounted in a ring and sold to the forementioned Mrs. May Bonfils Stanton, in 1946. In 1962 Winston reacquired the diamond from Mrs. Stanton's estate and had it recut from its original weight of 39.80 carats (7.960 g; 0.2808 oz) down to 38.88 carats (7.776 g; 0.2743 oz).