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Home > Dumortierite tumbled

Dumortierite tumbled

Dumortierite tumbled

Dumortierite tumbled

Dumortierite tumbled

A species of Dumortierite

Dumortierite tumbled is dark blue or green with brown or black speckles throughout. Sometimes, a rare pink variety is found. It has been mistaken for Lapis Lazuli and is sometimes used as its imitation. Dumortierite tumbled is found in a number of places including Austria and across Africa and the USA. It is used for ornamental pieces.

General Info About Dumortierite tumbled

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Physical Properties of Dumortierite tumbled

Streak

White

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Chemical Properties of Dumortierite tumbled

Formula

Al(Al2O)(Al2O)2(SiO4)3(BO3)

Elements listed

Al, B, O, Si

Optical Properties of Dumortierite tumbled

Refractive Index

1.669-1.723

Birefringence

0.011-0.037

Pleochroism

Red-brown crystals - strong trichroism: black, red brown, brown

Optical Character

Biaxial negative

Characteristics of Dumortierite tumbled

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Cultural Significance of Dumortierite tumbled

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Healing Properties of Dumortierite tumbled

Dumortierite tumbled is believed to enhance mental capacity and memory recall. It is a beneficial stone to use when studying as it might help the mind retain information. It helps its user to accept certain life changes and to learn patience. Many people meditate with it to enhance psychic or spiritual abilities.

Common Questions People Also Ask

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More Rocks You Might Enjoy

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Nephrite tumbled

Nephrite tumbled is mostly found in shades of green, with black or white occasionally found, and a glossy sheen. Mined throughout the world including the USA, Pakistan, and China. It is often carved into intricate statues or figurines, bracelets, made into beads, tumbled stones, cabochons, and set in jewelry.

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Snowflake Obsidian tumbled

Snowflake Obsidian tumbled is a dark grey or black color with speckles of white or grey cristobalite throughout. It is usually mined in North and South America. Snowflake Obsidian tumbled is popular for its aesthetic appeal, and is often made into beads for bracelets and necklaces as well as ornamental spheres.

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Black Moonstone tumbled

The black Moonstone tumbled is a dark grey, black-colored stone with veins of a peachy sand color. The best quality black Moonstone tumbled is found in Sri Lanka, although there are mines in India, Brazil, and Myanmar. It is liked for its shimmering adularescence. It is made into ornamental spheres, beads, and cabochons.

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Olive Opal tumbled

Olive Opal tumbled is a common opal in a range of olive green colored hues finished with a sheen. Olive Opal tumbled is mined in Kenya, although opal in other shades of green is found elsewhere in the world. It is made into tumbled stones, beads for bracelets, and cut into cabochons which can be set into pendants.

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Agatized Coral tumbled

Polished from crystallized corals, agatized Coral tumbled is a popular tumbled stone that can exhibit various earthy shades and numerous patterns. It is usually cut into cabochons and it's sometimes dyed pink or blue. Agatized Coral tumbled is mined only in Florida and Georgia (USA).

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Chlorite (mineral group)

The chlorite ion, or chlorine dioxide anion, is the halite with the chemical formula of ClO2. A chlorite (compound) is a compound that contains this group, with chlorine in the oxidation state of +3. Chlorites are also known as salts of chlorous acid.

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Milky Quartz tumbled

Milky Quartz tumbled is a beautiful white stone that can be either transparent or opaque. Very common and found almost everywhere, milky Quartz tumbled is often overlooked. When tumbled and polished, it's used for jewelry-making and various craft projects.