Gemstone Glossary - N

A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z

NACRE - A pearly substance, which lines the interior of many shells

NATURAL GEMSTONE - A natural gemstone is a mineral, stone, or organic matter that can be cut and polished or otherwise treated for use as jewelry or other ornament.

Garnet Gemstone Garnet is an example of a naturally occurring gemstone.