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2. Chrysoberyl - Wikipedia

   en.wikipedia.org/wiki/Chrysoberyl

   Main chrysoberyl producing countries. The mineral or gemstone chrysoberyl is an aluminate of beryllium with the formula Be Al 2 O 4. [5] [6] The name chrysoberyl is derived from the Greek words χρυσός chrysos and βήρυλλος beryllos, meaning "a gold-white spar".

3. Synthetic alexandrite - Wikipedia

   en.wikipedia.org/wiki/Synthetic_alexandrite

   Synthetic alexandrite is an artificially grown crystalline variety of chrysoberyl, composed of beryllium aluminum oxide (BeAl 2 O 4). The name is also often used erroneously to describe synthetically-grown corundum that simulates the appearance of alexandrite , but with a different mineral composition.

4. Sapphire - Wikipedia

   en.wikipedia.org/wiki/Sapphire

   At present, the world record price-per-carat for sapphire at auction is held by a sapphire from Kashmir in a ring, which sold in October 2015 for approximately US$242,000 per carat (HK$52,280,000 in total, including buyer's premium, or more than US$6.74 million).

5. How Much Is a Diamond Worth? How To Find the Value of Your ...

   www.aol.com/finance/much-diamond-worth-value...

   To gauge the degree of clarity in a diamond, it’s important to work with a jeweler that you know and trust. The highest clarity grade is FL, meaning flawless. The scale then runs to: IF. VVS. VS ...

6. Diamond prices are down as people spend more on travel ... - AOL

   www.aol.com/diamond-prices-down-people-spend...

   Even though rough diamond prices are falling, buying a one-carat round diamond at the store is on average 3% more expensive now than it was in January 2020, he said.

7. List of gemstones by species - Wikipedia

   en.wikipedia.org/wiki/List_of_gemstones_by_species

   Gadolinite; Gahnite; Gahnospinel; Garnet group: Pyralspite. Almandine; Pyrope; Spessartine; Ugrandite. Andradite. Demantoid; Melanite; Topazolite; Grossular ...