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  2. Brown diamond - Wikipedia

    en.wikipedia.org/wiki/Brown_diamond

    The rough gem weighed 248.9 carats (49.78 g) and was cut into a 111.59 carats (22.318 g) pear-shaped gem with a strong brown color and extraordinary brilliance. The diamond was bought in 1983 for $900,000.

  3. 18 Most Expensive Gemstones in the World - AOL

    www.aol.com/18-most-expensive-gemstones-world...

    18. Platinum. Cost: $33.02 per gram Platinum is a beautiful precious metal that is in a similar category as gold and silver. All three of these metals are frequently traded in the global markets ...

  4. Smoky quartz - Wikipedia

    en.wikipedia.org/wiki/Smoky_quartz

    It usually has a smoky yellow-brown colour, though some specimens are greyish-brown. It is used in Scottish jewellery and as a decoration on kilt pins and the handles of sgianan-dubha (anglicised: sgian-dubhs or skean dhu). [11] The largest known cairngorm crystal is a 23.6 kg (52 lb) specimen kept at Braemar Castle. [citation needed]

  5. List of largest rough diamonds - Wikipedia

    en.wikipedia.org/wiki/List_of_largest_rough_diamonds

    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.

  6. 9 Rare American Coins That Are Worth a Lot of Money - AOL

    www.aol.com/finance/9-rare-american-coins-worth...

    Here’s are nine American coins that are worth a lot of money. ... The 1926-D Wheat Penny value ranges from about $900 for Mint State brown varieties to $22,000 for Mint State red varieties.

  7. Diamond color - Wikipedia

    en.wikipedia.org/wiki/Diamond_color

    [clarification needed] These from the National Museum of Natural History are a medium brown color. The 296 gems of the Aurora Pyramid of Hope as exhibited in the Natural History Museum in London under natural light. Diamonds occur in a variety of colors—steel gray, white, blue, yellow, orange, red, green, pink to purple, brown, and black.

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