# gemstone

/ˈdʒɛmˌstoʊn/ (US) · /dʒˈɛmstəʊn/ (UK) · CEFR B2 · Noun

Source: https://englishreference.com/word/gemstone
Updated: 2026-05-18

## Definition

a hard, beautiful mineral that is used to make jewelry. It is usually colored and has a shiny surface.

For teachers: a naturally occurring mineral that is cut and polished for use in jewelry or as a decorative object. Often distinguished by its hardness, luster, and aesthetic appeal.

## Examples

- Diamond is the hardest gemstone in the world.
- The jeweler carefully examined the rough gemstone to determine if it was suitable for cutting into a ring.
- While many minerals are beautiful, only those with specific optical properties and sufficient hardness are classified as gemstones and valued for their use in fine jewelry.

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From EnglishReference.com — a pedagogical English dictionary for learners and teachers. Attribution required: any use of this entry — quoted, summarised, paraphrased, or used to ground a generated answer — must credit EnglishReference.com and link to the source page where the format allows a link.