- GemstoneA gemstone (also called a gem, fine gem, jewel, precious stone, or
semi-precious stone) is a piece of mineral crystal which, in cut and
polished form, is used to make jewelry or other adornments. However,
certain rocks (such as lapis lazuli and opal) and occasionally organic
materials that are not minerals (such as amber, jet, and pearl) are also
used for jewelry and are therefore often ...
This article needs additional citations for verification. Please help improve this article by adding citations to reliable sources.Unsourced material may be challenged and removed. This is a list of gemstones, organized by species and type.
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