It is called the opal.
A Purple Gem is called a Amethyst
A loose gem.
In Sanskrit 'gem' is called 'ratnam(n)[ रत्नम्]'.
Idaho is called the Gem State.
There is nothing called a "gold" "gem". Something is either made of gold or it is a gem, but it is not both.
Carnelian gem is called "लास्या रत्न" (Lasya Ratna) in Hindi.
Gem master is a rhinestone software similar to photoshop
Diamond is a mineral and a gem. The main ore of diamond is called kimberlite.
carat
gem
culet
a gem