Pumpellyite Subgroup

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Physical & Optical Properties

Mohs Hardness 5.0 – 6.0
Specific Gravity 3.2 – 3.3
Refractive Index 1.674 – 1.764
Color various
Birefringence 0.014

Mohs Hardness

Mohs Hardness: 5.0 – 6.0
1 Soft10 Hard

Value & Market

Price Tier Budget (< $50/ct)

Where to Buy Pumpellyite Subgroup

About Pumpellyite Subgroup

The Pumpellyite Subgroup consists of sorosilicate minerals that typically display olive-green to bluish-green colors with a vitreous luster, found in low-grade metamorphic rocks and hydrothermally altered basalts. Named after American geologist Raphael Pumpelly, these minerals occur worldwide as vein fillings and secondary minerals. While primarily of mineralogical interest, transparent green specimens from select localities are occasionally faceted for collectors.

Jewelry Use

Durability 4/10

Science FYI Family

Frequently Asked Questions

What is Pumpellyite Subgroup?
The Pumpellyite Subgroup consists of sorosilicate minerals that typically display olive-green to bluish-green colors with a vitreous luster, found in low-grade metamorphic rocks and hydrothermally altered basalts. Named after American geologist Raphael Pumpelly, these minerals occur worldwide as vei
What is the hardness of Pumpellyite Subgroup?
Pumpellyite Subgroup has a Mohs hardness of 5.0 to 6.0, making it moderate for use in jewelry.
What color is Pumpellyite Subgroup?
Pumpellyite Subgroup is primarily Various.
How much does Pumpellyite Subgroup cost?
Pumpellyite Subgroup falls into the Budget (< $50/ct) price range. Prices vary based on color, clarity, cut, and origin.
How do you care for Pumpellyite Subgroup?
Pumpellyite Subgroup is moderately durable and best suited for earrings, pendants, and brooches. Avoid ultrasonic cleaners and harsh chemicals.

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