What mineral is andalusite?
aluminium nesosilicate mineral
Andalusite (IMA symbol: And) is an aluminium nesosilicate mineral with the chemical formula Al2SiO5. This mineral was called andalousite by Delamétehrie, who thought it came from Andalusia, Spain….
| Andalusite | |
|---|---|
| Fracture | uneven to subconchoidal |
| Mohs scale hardness | 6.5 – 7.5 |
| Luster | Vitreous |
| Streak | White |
What is andalusite good for?
Andalusite is the seeing stone that promotes the desire for self-realization, helping one to rebalance and re-align. This stone helps the wearer in discovering problems and emotional blockages while pointing the wearer to the possible resolution. It is also a protection stone and used to ward off the evil eye.
Where can you find andalusite?
Andalusite is a rock-forming mineral most commonly found in schist, gneiss, and hornfels. Minor amounts are also found in granite and granitic pegmatite.
How is andalusite mined?
Andalusite Mining: Andalusite is found the form of black crystals of approximately 1.9-2.5 cm within schist. The ore is drilled with a wagon drill, blasted, and transported with a rubber-tired front-end loader with a 2.29-m to 2.74-m bucket.
What is andalusite worth?
Andalusite is on average $40 dollars per carat. However, andalusite gemstones that feature custom cuts, and a higher than average play of light and colors, are valued at higher prices. *Unlike most gemstones that are cut to minimize color play, andalusite is cut to maximize the full pleochroic effect.
Where is Chiastolite found?
Chiastolite was first found in Anda lusia, a Province of Spain which gave its name to the parent mineral. Other world localities of note are South Aus tralia, Brittany, France, and the Trans Baikal province of the USSR at Ner chinsk and on the shores of the Argun River.
What is the hardness of andalusite?
7 – 7.5
Andalusite/Hardness (Mohs hardness scale)
Is andalusite a rare stone?
Although Andalusite as a mineral is not uncommon, the transparent variety used as a gem is very rare. Another important form of Andalusite that is entirely different is the mostly opaque Chiastolite variety, which is known for its unique cross-shaped design within the body of a crystal.
Is andalusite a silicate mineral?
Andalusite is a naturally occurring alumino-silicate mineral commonly found in metamorphic rocks.
How much is andalusite per carat?
Andalusite is on average $40 dollars per carat. However, andalusite gemstones that feature custom cuts, and a higher than average play of light and colors, are valued at higher prices.
What is the value of andalusite?
Andalusite Price List
| Andalusite Price List | ||
| Color | Weight range | Price range / USD |
|---|---|---|
| Multicolor | under 1ct | $20 – 100/ct |
| Multicolor | 1ct + | $50 – 300/ct |
How much does andalusite cost?