Definition of Opal

a shimmery, semi-precious gemstone that comes in many different iridescent colors

Examples of Opal in a sentence

Lori’s birthday is in October, so her birthstone necklace includes a multi-colored opal surrounded by other semi-precious stones.  🔊

Because the colors of the opal are iridescent, the gem can flash blue, green, and even purple depending on the lighting.  🔊

Ancient Romans believed the shimmery opal to represent good fortune and named it the queen of all other jewels.  🔊

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