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2. List of gemstones by species - Wikipedia

   en.wikipedia.org/wiki/List_of_gemstones_by_species

   This is a list of gemstones, organized by species and types. Minerals. There are over 300 types of minerals that have been used as gemstones. Such as: A–B

3. Emerald - Wikipedia

   en.wikipedia.org/wiki/Emerald

   The least expensive emeralds are often treated with epoxy resins, which are effective for filling stones with many fractures. [14] [15] These treatments are typically applied in a vacuum chamber under mild heat, to open the pores of the stone and allow the fracture-filling agent to be absorbed more effectively. [16]

4. List of individual gemstones - Wikipedia

   en.wikipedia.org/wiki/List_of_individual_gemstones

   Bahia Emerald [2]; Carolina Emperor, [3] [4] 310 carats uncut, 64.8 carats cut; discovered in the United States in 2009, resides in the North Carolina Museum of Natural Sciences, Raleigh, NC, US

5. One of the ‘purest, pinkest diamonds’ to go under the hammer

   www.aol.com/one-purest-pinkest-diamonds-under...

   The last time a gem of this colour, quality and size was shown to the world was in 2017 and it went on to become the most expensive gemstone ever to be sold at auction (Yui Mok/PA)

6. What is the birthstone for December? Hint: There's actually ...

   www.aol.com/birthstone-december-hint-theres...

   One place to start is to know their birth month symbols and gemstones. People born in December can have one of two astrological signs: Sagittarius (Dec. 1 through 21) or Capricorn (Dec. 22 through ...

7. 18 Most Expensive Gemstones in the World - AOL

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

   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 ...