Definition of the Beading Term Semi-Precious

Definition: Semi-Precious is a class of natural stone, one mined from the earth, that are not classed as a gemstone. Included in the semi-precious category are stones such as garnets, aquamarine, citrine, apatite, and other mineral stones. However, even diamonds, emeralds, rubies, and sapphires can be sold as semi-precious grade, and are often available as small beads sold in single, graduated-size strands, with the largest bead being approximately 6mm, down to a 3mm or 4mm size. In most cases the definition of semi-precious has more to do with the quality of the stone, and less to do with the composition of the mineral that makes up the stone. Semi-precious stones are often treated using a variety of methods for coloration and stabilization. Almost all turquoise has been treated with a transparent resin in order to stabilize it, as it is a fragile stone in an untreated state. Many other stones are either heat-treated or irradiated to enhance their colors.

Pronunciation: sim ee presh ush

Also Known As: gem mineral, stones, non-gem grade stones

Alternate Spellings: Semiprecious

Examples: The necklace was made up of a scintillating combination of colored semi-precious stones, giving it the look of a necklace fit for a Queen.

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