Natural Prehnite 57ct Oval Cabochon

The most elongated stone in this collection at 39.4mm across with a correspondingly low, flat profile. The body shifts between cool pale green and warmer golden-yellow zones visible through the material, and dense clusters of dark needle inclusions create a layered, complex pattern across the long surface. The interplay between the warm golden patches and the cool green ground gives this stone more visual variety than plainer specimens.

The warm golden zones in this stone reflect natural iron-bearing variation within African prehnite material, a characteristic of certain deposits where the composition shifts across a single crystal mass. Prehnite is always untreated. The 39.4mm length suits long horizontal pendant designs and bar settings.

• Stone type: Natural prehnite
• Weight: 57ct
• Size: 39.4x18.4mm
• Color: Yellow-green
• Cut: Oval cabochon
• Clarity: Opaque
• Treatment: Untreated
• Origin: Africa
• Hardness: 6-6.5 (Mohs)

Natural prehnite, oval cabochon, Africa, sold loose.