Epididymite

A variety of Minerals

Rare

What is Epididymite?

Epididymite is a hydrated sodium beryllium silicate. It shares the same chemical composition with eudidymite but with a different crystal structure. The name of it derives from the Greek word "near" and "twin", representing "the relationship with eudidymite" and "the habit that it always occurs in twins" respectively.

Epididymite Market Value Calculator

Estimate the market value of Epididymite using size, quality, and finish. This preview calculator is for quick context and is not a formal appraisal.

Preview only. Full pricing comps and valuation report in the app.

Epididymite Localities Map

See where Epididymite is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.

Map preview
North ZoneCentral RidgeSouth Basin

Interactive map layers and collecting notes are available in the app.

Quick Facts

Physical Properties

Color
Colourless
Hardness (Mohs)
5.5
Density
2.548 g/cm³
Streak
White
Luster
Vitreous
Crystal System
Orthorhombic

Chemical Properties

Chemical Formula
Na2Be2Si6O15 · H2O
Elements
Be, H, Na, O, Si
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