- Stone type
- Natural Prehnite
- Weight
- 85.6ct
- Size
- 34.8x27.1mm
- Color
- Olive green
- Cut
- Oval cabochon
- Clarity
- Semi-transparent
- Treatment
- Untreated
- Origin
- Africa
- Hardness
- 6-6.5
Natural Prehnite 85.6ct Oval Cabochon
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The standout piece of this prehnite collection, distinguished by its 85.6ct weight and, alone among these cabochons, its semi-transparent body that allows light to pass through in a way the fully opaque stones do not. A dramatic, dense spray of black epidote needles fans outward in a radiating pattern from the center of the stone, clearly visible against the deeper olive-green body. Warm golden-brown patches add further depth and color variation to the internal character.
The semi-transparency of this piece is less common in African prehnite cabochon material, and it lets the dense spray of epidote needles be seen in full relief as light passes through, turning the inclusions into an expressive decorative feature rather than something to look past. Prehnite is always untreated. At 34.8x27.1mm and 85.6ct this is a substantial centerpiece cabochon, suited to large pendants and statement settings.
Natural prehnite, sold loose.
We ship worldwide from Sofia, Bulgaria. Every order is packed in a protective box with bubble wrap. Orders within Bulgaria are dispatched within 1-2 business days and international orders within 2-3 business days. Free shipping is applied automatically at checkout, and the threshold applies to the order value after any discounts.
Delivery within Bulgaria
- Delivered by Speedy, Econt or Box Now, to a courier office, a locker or your address.
- Fixed prices: Box Now locker €1.60 (free on orders from €25), Speedy office €3.20, Econt office or locker €4.00, Speedy to your address €4.50.
- Free shipping on orders over €50, with any courier and at any weight.
- Cash on delivery is available.
- Delivery normally takes 1-2 business days after dispatch.
- Hardness
- 6-6.5
- Cleavage
- None
- Durability
- Good
- Soapy water
- Safe
- Ultrasonic
- Avoid
- Steam
- Avoid
About prehnite
Prehnite is a calcium aluminum silicate, usually a soft, translucent green. At 6 to 6.5 on the Mohs scale it is fairly durable, but softer than quartz.
Cleaning
Warm water, a drop of mild dish soap and a soft brush, then rinse and dry with a soft cloth. Skip ultrasonic and steam cleaners: sudden heat can crack it.
Wear and storage
Below 7 on the Mohs scale, it can be scratched even by household dust, which contains quartz. It suits pendants, earrings and brooches better than rings worn every day. Store it on its own in a soft pouch, away from harder stones.
For your jeweler
This prehnite is untreated. Prehnite should be kept away from the torch flame, acid pickle and the ultrasonic bath.
Scale
True to scale: 34.8 × 27.1 mm
Shown next to a €1 coin (23.25 mm) in the exact ratio, so you can picture the real size.
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