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2. Ruby - Wikipedia

   en.wikipedia.org/wiki/Ruby

   Ruby is a pinkish red to blood-red colored gemstone, a variety of the mineral corundum (aluminium oxide). Ruby is one of the most popular traditional jewelry gems and is very durable. Other varieties of gem-quality corundum are called sapphires. Ruby is one of the traditional cardinal gems, alongside amethyst, sapphire, emerald, and diamond. [3]

3. List of rubies by size - Wikipedia

   en.wikipedia.org/wiki/List_of_rubies_by_size

   Some gemstones that are popularly or historically called rubies, such as the Black Prince's Ruby in the British Imperial State Crown, are actually spinels. These were once known as "Balas rubies". The quality of a ruby is determined by its color, cut, and clarity, which, along with carat weight, affect its value. The brightest and most valuable ...

4. Sunrise Ruby - Wikipedia

   en.wikipedia.org/wiki/Sunrise_Ruby

   The Sunrise Ruby. The Sunrise Ruby [1] [2] [3] has been the world's most expensive ruby, most expensive coloured gemstone, and most expensive gemstone other than a diamond [2] [3] [4] until the discovery of the Estrela de Fura. Originally mined in Myanmar, its current name is derived from a poem of the same name, written by the 13th-century ...

5. Judy Garland’s ‘Wizard of Oz’ Ruby Slippers To Be Auctioned ...

   www.aol.com/entertainment/judy-garland-wizard-oz...

   Just in time for Wicked, a historic piece of Wizard of Oz memorabilia is going up for auction. A pair of Judy Garland’s iconic ruby slippers from the 1939’s The Wizard of Oz is being auctioned ...

6. Gemstone industry in Greenland - Wikipedia

   en.wikipedia.org/wiki/Gemstone_industry_in_Greenland

   A total of 6,974 metres of diamond drilling was completed in 65 holes. Ruby and pink sapphire was found in 48 of the holes. At Aappaluttoq, the ruby and pink sapphire mineralization occurs in a corundum (ruby-sapphire) alteration band that exhibits trench-to-trench and drill hole-to-drill hole continuity.

7. Gemstone - Wikipedia

   en.wikipedia.org/wiki/Gemstone

   Gemstones are often treated to enhance the color or clarity of the stone. [40] In some cases, the treatment applied to the gemstone can also increase its durability. Even though natural gemstones can be transformed using the traditional method of cutting and polishing, other treatment options allow the stone's appearance to be enhanced. [41]