What is a watermelon tourmaline?

The watermelon tourmaline is an exceptional strain of the gemstone tourmaline. It flaunts three distinctive colors in a single crystal. The green is akin to the skin of a watermelon. The pink is similar to the sweet flesh of the fruit. An finally the white is comparable to the rind of the aqueous summer-fruit. Amazingly the unusual color combination is hundred percent natural.

12.54 Carat. Natural Facet Rough Bicolor Pink Green Watermelon Tourmaline Specimen Gemstone Rare Loose Watermelon Pink Green Natural Tourmaline Faceted Cabochon Gemstone
12.54 Carat. Natural Facet Rough Bicolor Pink Green Watermelon Tourmaline Specimen Gemstone Rare Loose Watermelon Pink Green Natural Tourmaline Faceted Cabochon Gemstone

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Tourmaline is the name given to a whole family of related gemstones. These gemstones have a complex and changing composition since they are mixed crystals of boron, silicon & aluminum. The aluminium-boron-silicate crystals also contain a mixture of other elements such as sodium, lithium, calcium, magnesium, manganese, iron, chromium, vanadium, fluorine, and sometimes copper. The changing configuration imparts a motley of colors to the gemstone. Furthermore, these colors change and look more or less intense depending on the angle of viewing.

There are eleven classified species of tourmaline depending on their chemical composition & properties. Elbaite is the most colorful member of this vibrant mineral family. And Watermelon Tourmaline is an interesting multicolored variety of the mineral elbaite.

Tourmaline Emerald and Diamond Dangle Earrings in 18K Yellow Gold & Sterling Silver

Tourmaline Emerald and Diamond Dangle Earrings in 18K Yellow Gold & Sterling Silver

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The term tourmaline originates from the Singhalese language phrase ‘tura mali.’ It means ‘a stone blended with vibrant colors.’ The prefix watermelon obviously alludes to the succulent colors mimicking the skin, flesh and rind of the summer-fruit. The name ‘Watermelon Tourmaline’ was coined by the influential mineral collector George Robeley Howe of Norway, Maine.

The inimitable and startling color-combination of watermelon tourmaline makes the gemstone a darling of designers. Moreover, the inherent hardness at the range of 7 to 7.5 on Moh’s scale makes it a relatively robust stone for setting into jewelry.

How is watermelon tourmaline formed?

Tourmaline crystals were deposited in veins running through rocks that were created when superhot magma from boiling volcanoes cooled down and solidified. Due to uneven cooling the developing rocks themselves developed cracks. These cracks swelled up with solution of minerals like manganese, iron or lithium. As time elapsed, the solution crystallized into gemstone tourmaline along with other stones. The constituent trace minerals imparted flamboyant colors to the gemstone.

Watermelon Tourmaline Sterling Silver Ring

Watermelon Tourmaline Sterling Silver Ring

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The dynamic nature of geological conditions constantly kept changing the chemical composition of the solution. Elements were depleted and replenished and substituted over the course of time. The changing concentrations and minerals changed the color of the resulting crystal. It also gave rise to zones of different colors across the crystal.

Faceted Superfine Watermelon Tourmaline Large Briolette

Faceted Superfine Watermelon Tourmaline Large Briolette

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The chemical composition of a tourmaline crystal manipulates its physical properties and orchestrates its symphony of colors. Iron imparts dark blue or black color. Manganese makes yellow, pink, brown or red crystals. Chromium causes the crystal to turn emerald green. Lithium leaves layers of blue, red, green, pink or yellow. You can now visualize that a tourmaline crystal exhibiting a single color is extremely rare.

Gem Watermelon Bicolor Tourmaline Bracelet From Brazil

Gem Watermelon Bicolor Tourmaline Bracelet From Brazil

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In watermelon tourmaline, green & pink Elbaite crystals cohabit in the same gemstone. The fleshy pink center grows outwards into a pale zone and finally into the rind green color.

Gem Watermelon Bicolor Tourmaline Bracelet From Brazil 7.5mm Roud Beads

Gem Watermelon Bicolor Tourmaline Bracelet From Brazil 7.5mm Roud Beads

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Watermelon tourmaline gemstones have a propensity to develop into characteristic rounded triangular shapes. Many a times, a cutter will fashion the gem in thin polished slices to display the crystal’s concentric color rings. The style enhances the semblance to a slice of watermelon.

Michael Valitutti Palladium Silver Watermelon Tourmaline & Multi Gem Pendant

Michael Valitutti Palladium Silver Watermelon Tourmaline & Multi Gem Pendant

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The inherent complexity of a tourmaline crystal makes cutting it a really difficult job. Only a dexterous cutter with the needed skill can cut the stone without causing it to crack.


Or See More Gemstones As Follows:
Alexandrites
Natural Alexandrite Jewelry
Amber
Amber Jewelry
Amethyst
Ametrine
Aquamarine
Citrine
Emerald
Garnet
Jade
Morganite Jewelry
Moonstone
Opal
Peridot
Ruby
Ruby – The July Birthstone
Pigeons Blood Ruby Color
Sapphire
Spinel
Tanzanite
Topaz
The Biggest Block Of Blue Topaz Gemstone To See Light Of Day After 30 Years.
Tourmaline
Watermelon Tourmaline.
Turquoise
Birthstone Guide
La Gloria Emerald Gemstone


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