AltGems
Updated as of June 2026

21st anniversary: Iolite

The traditional gemstone for the 21st wedding anniversary is Iolite (Blue, Violet-blue, Gray). It makes a meaningful, lasting gift.

6.8

Iolite

Blue ยท $15+/ct

Iolite ring

Gift idea

Iolite necklace

Gift idea
Shop Iolite anniversary gifts
Launch offer: 5% off your first necklace with code WELCOME5
Shop Iolite anniversary gifts
Mark the year
  • Handmade in the USA
  • Made to order
  • Ships in 3 to 5 days
  • Gift-boxed
  • Satisfaction guaranteed
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Frequently asked questions

What is the 21st anniversary gemstone?
The traditional gemstone for the 21st wedding anniversary is Iolite.
What 21st anniversary gift should I buy?
Iolite jewelry is the classic choice: a Iolite ring, pendant, or pair of earrings. Iolite runs about $15 to $150 per carat.