gemstone, any
of various minerals highly prized for beauty, durability, and
rarity. A few noncrystalline materials of organic origin
(e.g., pearl, red coral, and amber) also are classified as
gemstones. jewelry: gems.
A gem is a stone
that is considered precious or semi-precious,
particularly when it is polished or cut. Stones that have
come to be defined as gems are well known for
their unique
beauty, color, patterns, or clarity.
We believe
that the most important single gem characteristic
is colour.
Gems such as ruby, amethyst, sapphire and emerald
have attractive colour as their main attraction,
and are generally expected to be transparent,
however it is not necessary for gemstone to be
transparent.
A
gemstone is also called a fine
gem, gem, jewel, semi-precious stone, or
precious stone.