What is a crystal in jewellery?
By Jared James · Last updated 21 May 2026
Definition
In jewellery, crystal refers to two related but different things. The first is the scientific sense: a crystal is any solid material where atoms are arranged in a regularly repeating internal pattern, and most gemstones, including diamonds, rubies and quartz, are crystals in this sense. The second, more commercial use of the word is for highly polished glass or glass-like material, like lead crystal or the glass beads sold under names such as rhinestone or Swarovski crystal, which are not natural gemstones but are cut and polished to imitate them.
Frequently asked questions
- Is crystal jewellery the same as gemstone jewellery?
- Not necessarily. Many natural gemstones are crystals, but the word crystal is also used commercially to describe glass imitations. When a piece is described as set with crystals, it usually means high-quality glass or rhinestones rather than natural minerals, so it is worth checking the description carefully.
- What is Swarovski crystal?
- Swarovski crystal is a brand of precision-cut lead glass, made to very high standards of consistency and clarity. It is not a natural gemstone or a mineral crystal; it is a manufactured glass product, and it is used widely in costume and fashion jewellery for its sparkle.
- What is the difference between crystal and glass in jewellery?
- Ordinary glass is made from silica and various additives, while crystal glass traditionally contains lead oxide, which increases its refractive index and gives it more brilliance and weight. In jewellery, crystal usually means this higher-quality faceted glass rather than plain decorative glass.
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