Angelite

Angelite Crystals

Angelite is the trade name for a pale blue variety of anhydrite, a calcium sulfate mineral (CaSO₄) crystallizing in the orthorhombic system. It registers just 3–3.5 on the Mohs hardness scale, making it a relatively soft stone that requires careful handling. Angelite's glacier-blue color is caused by trace amounts of celestine (strontium sulfate) within its structure. The primary commercial source is Peru, where it was first marketed in the 1980s.

As a variety of anhydrite — literally "without water" — angelite is not water safe. Prolonged moisture exposure causes it to rehydrate and convert back to gypsum, damaging surface and polish. Despite its softness, angelite is valued for its serene, opaque blue that is unlike virtually any other affordable mineral. It takes a smooth, matte-to-waxy polish and is frequently carved into decorative shapes.

Available forms include tumbled stones, palm stones, polished hearts, spheres, and raw specimens. For other blue minerals, see our lapis lazuli, sodalite, and larimar collections. For other soft minerals requiring careful handling, see selenite. Browse crystals for bedroom for calming display pieces. Free shipping on orders $150+.

Frequently Asked Questions

What is angelite?

Angelite is a pale blue variety of anhydrite (calcium sulfate, CaSO₄). It forms when gypsum loses its water content through geological processes over millions of years. It has a Mohs hardness of 3–3.5 and a soft, powdery blue color.

Can angelite get wet?

No. Angelite should not be submerged in water. As anhydrite ("without water"), it can absorb moisture and begin converting back to gypsum, causing the surface to become chalky or lose polish. Clean with a dry soft cloth only.

Where does angelite come from?

The primary source is Peru, which produces the pale blue material most commonly seen in the market. It also occurs in Mexico, Germany, Poland, Libya, and Egypt. Peruvian deposits produce the most consistent color.

What is the difference between angelite and celestite?

Angelite (anhydrite, CaSO₄) and celestite (strontium sulfate, SrSO₄) are chemically different minerals that look similar in pale blue form. Celestite forms pointed crystal clusters; angelite is usually found in massive form that is carved and polished. They are not related despite their visual similarity.

How should I care for angelite?

Angelite is soft at Mohs 3–3.5 — a copper coin can scratch it. Handle carefully, store separately from harder minerals, and keep in a dry environment. Never submerge in water. Clean with a dry soft cloth only.