What is agate?
By Jared James · Last updated 21 May 2026
Definition
Agate is a banded variety of chalcedony, which is itself a form of quartz, and it forms in just about every colour you can imagine, often in soft layered stripes that follow the shape of the rock cavity it grew in. Some agates are named for those patterns, like blue lace or moss agate, and others for where they are found. It is hard-wearing, takes a good polish, and is popular for everything from beads and cabochons to statement slices.
Frequently asked questions
- What is agate good for?
- In jewellery, agate is valued for being tough, affordable and endlessly varied, so it suits everyday rings, pendants and beads. Many people also wear it for its grounding, calming associations.
- Is agate a precious or semi-precious stone?
- Agate is classed as a semi-precious stone. It is widely available and gentle on the budget, which is part of its appeal, and it still offers gorgeous colour and pattern.
- How can you tell if agate is real?
- Real agate usually shows natural, slightly irregular banding, feels cool to the touch and resists scratching. Very bright, perfectly even colour can be a sign of dyeing, which is common and not always disclosed.
Designing a ring
Talk through agate with us
Tell us what you have in mind, even if it is only a budget and a piece of jewellery type, and we will help you weigh up the options. We reply to every enquiry, usually within one business day.
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