Olive Green Tourmaline

Olive Green Tourmaline is an uncommon olive-colored variety of tourmaline valued as a semi-precious gemstone. Its color ranges from dark olive green to lighter yellow-green and brownish-green tones, giving it a grounded, earthy look that stands apart from brighter green tourmaline.

In hand, a good piece shows a vitreous, glassy luster and may be transparent to translucent. With a Mohs hardness of 7-7.5, it has good scratch resistance for jewelry use, though its toughness is only fair, so collectors usually store it in a soft pouch rather than loose with harder or sharper specimens.

The name tourmaline comes from the Sinhalese word “turmali,” and tourmaline was first described in the 18th century. Olive Green Tourmaline follows that broader mineral tradition but is recognized by its distinct olive green body color, which makes it especially appealing to collectors who like quieter, natural-looking greens.

As a labeled specimen, Olive Green Tourmaline is best understood as a color variety within the tourmaline group rather than a separate mineral name. When checking old labels or comparing locality information, collectors often use mindat.org alongside specimen notes to keep the tourmaline variety, country, and mine-area details consistent.

Olive Green Tourmaline is found in Brazil, Nigeria, and Afghanistan, with Brazil and Nigeria listed as the most common sources. Notable localities include Minas Gerais in Brazil, Oyo State in Nigeria, and Kunar Province in Afghanistan.

Olive Green Tourmaline forms in igneous and metamorphic rocks through the cooling and crystallization of molten material. Its chemical classification is cyclo-silicate, with the formula Na(Li,Al,Mg,Fe)(Al,Fe)3(BO3)3Si6O18(OH)4.

That composition includes silicon, oxygen, boron, aluminum, magnesium, and iron, with iron and manganese listed as common impurities. In practice, the olive, yellow-green, and brownish-green colors are the first thing a collector notices, but the mineral’s trigonal crystal system, vitreous luster, and strong pleochroism are part of the deeper identification picture.

Identify Olive Green Tourmaline first by its olive green color range, vitreous luster, and transparent to translucent body. It may appear dark olive green, yellow-green, or brownish-green, and its white streak, conchoidal fracture, and non-magnetic response support the identification.

For a practical check, note the trigonal crystal system and use a careful scratch test only when appropriate, since its Mohs hardness is 7-7.5. The provided identification guidance also points to its characteristic color and cleavage; for gem testing, its refractive index of 1.61-1.64, birefringence of 0.009, strong pleochroism, and uniaxial optical character are useful confirmation features.

It poses no significant health risks when handled properly.

Rough/Tumbled: $50 - $150 per specimen

Cut/Polished: $100 - $500 per carat

Price is influenced by color, clarity, and size.

Durable — Scratch resistance: Good, Toughness: Fair

It is stable under normal conditions but can be sensitive to harsh chemicals.

Use & Storage

Store in a soft pouch to prevent scratches.

Cleaning

Clean with warm soapy water and a soft cloth. Avoid harsh chemicals.

Cleanse & Charge

Charge under moonlight for a few hours.

Placement

Place in a location where it receives indirect sunlight.

Caution

Avoid exposure to extreme temperatures.

Olive Green Tourmaline is believed to promote balance, harmony, protection, peace, and emotional healing. In crystal practice it is associated with the Heart chakra, Venus, the Earth element, and the zodiac signs Libra and Pisces.

Practitioners often choose it for grounding, calming, meditation, trust, love, stress relief, inner peace, and self-discovery work. These meanings are cultural and spiritual associations, not medical claims, and Olive Green Tourmaline should not be used as a substitute for professional medical treatment.