Watermelon Tourmaline

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Physical & Optical Properties

Mohs Hardness 7.0 – 7.5
Specific Gravity 2.9 – 3.4
Refractive Index 1.614 – 1.666
Crystal System Trigonal
Luster Vitreous
Cleavage None
Fracture Uneven,Irregular,Conchoidal,Sub-Conchoidal
Color various
Birefringence 0.014
Dispersion 0.017

Mohs Hardness

Mohs Hardness: 7.0 – 7.5
1 Soft10 Hard

Crystal System

a a a Trigonal (Rhombohedral) a = b = c, α = β = γ ≠ 90°

Value & Market

Price Tier Moderate ($50-500/ct)

Where to Buy Watermelon Tourmaline

About Watermelon Tourmaline

Watermelon Tourmaline is a variety of tourmaline displaying concentric zones of pink in the center, white, and green on the outer rind—mimicking a watermelon cross-section when sliced perpendicular to the crystal's length. This striking color zoning results from the gradual change in chemical composition during crystal growth, with manganese producing pink and iron producing green zones. Brazil's Minas Gerais is the primary source, and slices of this gem command premium prices for their striking natural patterns.

Jewelry Use

Durability 7/10

Suitable for daily wear

Science FYI Family

Frequently Asked Questions

What is Watermelon Tourmaline?
Watermelon Tourmaline is a variety of tourmaline displaying concentric zones of pink in the center, white, and green on the outer rind—mimicking a watermelon cross-section when sliced perpendicular to the crystal's length. This striking color zoning results from the gradual change in chemical compos
What is the hardness of Watermelon Tourmaline?
Watermelon Tourmaline has a Mohs hardness of 7.0 to 7.5, making it excellent for use in jewelry.
What color is Watermelon Tourmaline?
Watermelon Tourmaline is primarily Various.
How much does Watermelon Tourmaline cost?
Watermelon Tourmaline falls into the Moderate ($50-500/ct) price range. Prices vary based on color, clarity, cut, and origin.
What is the crystal system of Watermelon Tourmaline?
Watermelon Tourmaline belongs to the Trigonal crystal system.

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