You can see the original quiz, and the gemstones in far greater detail here ...
1~ tanzanite
2~ 6 pointed star ruby; star sapphires are more common; this asterism is caused by traces of titanium dioxide in the aluminium oxide (corundum) that makes rubies and sapphires; these stones are presented in smooth cabochon (unfaceted) mode to let that star shine out!
3~ padpardascha orange ruby or sapphire; these unique gems are particularly prized amongst collectors of fine jewellery; the ambiguity of name arises from current nomenclature, which names red corundum stones as rubies; any other colours (including of course blue, but including pink) are known as sapphires ~ slightly confusing, or what?
4~ blue topaz
5~ peridot
6~ blue diamond set between lighter blue diamonds
7~ green garnet
8~ blue sapphire, a 206.82 carat pendant belonging to the late Duchess of Windsor
9~ emerald ~ note the scratchy, flaky appearance characteristic of these stones. Absolutely flawless emeralds are extremely rare ... emeralds are gem-quality green beryl; light blue beryl is called aquararine* ...
10~ the Steinmetz pink diamond ~ 59.6 carats
11~ green sapphire ~ yes sapphires come in every colour, including colourless; they are valued for flawlessness and saturation of colour, though they lack the refractive "fire" of coloured diamonds ...
12 ~ light blue-grey diamond ~ Christies blue pear diamond of 6.29 carats, fetched $6.5 million at auction in June 2009 ...
*look at this amazing aquamarine necklace/bracelet set by Balticamber.Com ~ $2,499
