20.69 CT Natural Tourmaline Cushion Cut Loose Gemstone
Gemstone Color: Bi-Color Copper Bearing
Gemstone Type: Tourmaline
Cut Grade: Excellent
Item Length: 13.85 mm
Item Depth: 10.95 mm
Item Width: 13.7 mm
Gemstone Cut: Cushion
Gemstone Creation: Natural
Gemstone Treatment: None
Gemstone Clarity: VVS1
Country/Region of Manufacture: India
Country of Origin: Mozambique
20.69 CT CERTIFIED NATURAL TOURMALINE CUSHION GEMSTONE
Tourmaline is a gemstone that comes in various colors and is known for its vibrant beauty. It is a boron silicate mineral with complex compositions, and its name comes from the Sinhalese word "turmali," which means "mixed colors." Here are some critical points about tourmaline gemstones:
Color Varieties: Tourmaline occurs in an extensive range of colors. It is found in shades of green, pink, red, blue, yellow, brown, black, and even colorless. In addition, some tourmaline gemstones display multiple colors in a single crystal, often called "bi-color" or "multi-color" tourmaline.
Durability: Tourmaline has good durability, making it suitable for use in jewelry. Its hardness is 7 to 7.5 on the Mohs scale, which means it can withstand everyday wear and tear.
Origins: Tourmaline deposits are found in various countries around the world. Some notable sources include Brazil, Madagascar, Afghanistan, Nigeria, Mozambique, Sri Lanka, and the United States (mainly California and Maine).
Paraíba Tourmaline: One of the most sought-after varieties is the Paraíba tourmaline, named after the Brazilian state where it was first discovered. It is renowned for its intense neon-blue to greenish-blue color, which is attributed to the presence of copper and manganese. As a result, Paraíba tourmalines are highly valued and can command high prices in the market.
Watermelon Tourmaline: This type of tourmaline displays a unique color combination that resembles the cross-section of a watermelon. It typically has a green outer layer, a pink or red middle layer, and sometimes a colorless or near-colorless core. Watermelon tourmaline is prized for its striking appearance and is used in jewelry designs.
Schorl: Schorl is the black variety of tourmaline. It is the most common form of tourmaline and is used as a gemstone. Black tourmaline is famous for its protective and grounding properties and is used in metaphysical and healing practices.