Phosphophyllite

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Physical & Optical Properties

Mohs Hardness 3.0 – 3.5
Specific Gravity 3.07 – 3.13
Refractive Index 1.595 – 1.621
Crystal System Monoclinic
Luster Vitreous
Fracture Conchoidal
Color various
Birefringence 0.021
Pleochroism Nil

Mohs Hardness

Mohs Hardness: 3.0 – 3.5
1 Soft10 Hard

Crystal System

β a b c Monoclinic a ≠ b ≠ c, α = γ = 90°, β ≠ 90°

Value & Market

Price Tier Budget (< $50/ct)

About Phosphophyllite

Phosphophyllite is a rare hydrated zinc iron manganese phosphate mineral, forming vivid sea-green to blue-green monoclinic crystals of exceptional transparency with a vitreous luster. It was first described from Hagendorf-Süd in Bavaria, Germany, with spectacular gem crystals found in the Unificada mine at Potosí, Bolivia—now largely exhausted—producing some of the finest transparent collector gems ever faceted. Its extraordinary color, perfection of crystal form, and extreme rarity make phosphophyllite one of the most coveted collector gems in the world.

Jewelry Use

Durability 2/10

Science FYI Family

Frequently Asked Questions

What is Phosphophyllite?
Phosphophyllite is a rare hydrated zinc iron manganese phosphate mineral, forming vivid sea-green to blue-green monoclinic crystals of exceptional transparency with a vitreous luster. It was first described from Hagendorf-Süd in Bavaria, Germany, with spectacular gem crystals found in the Unificada
What is the hardness of Phosphophyllite?
Phosphophyllite has a Mohs hardness of 3.0 to 3.5, making it relatively soft for use in jewelry.
What color is Phosphophyllite?
Phosphophyllite is primarily Various.
How much does Phosphophyllite cost?
Phosphophyllite falls into the Budget (< $50/ct) price range. Prices vary based on color, clarity, cut, and origin.
What is the crystal system of Phosphophyllite?
Phosphophyllite belongs to the Monoclinic crystal system.

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