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Topaz
Main Deposits
Brazil (main world producer), Russia, Pakistan, Sri Lanka, and USA (Utah)
Description and Characteristics
Topaz is an aluminum and fluorine silicate typically formed in igneous rocks such as granites and rhyolites, as well as in pegmatite cavities. It is an allochromatic gem, meaning that in its pure state it is completely colorless; the colors we see (blue, yellow, pink) are due to defects in its crystalline structure or the presence of trace elements. It is a very hard and heavy mineral that crystallizes in elegant prisms. Imperial Topaz, with its golden-orange to pinkish hue, is the rarest and most valuable variety in the world.
| Chemical Formula | $$A_{l2}(SiO_4)(F,OH)_2$$ |
|---|---|
| Luster | Vitreous |
| Streak | White |
| Fracture | Conchoidal to uneven |
| Cleavage | Perfect in one direction (basal) |
| Hardness | 8 Mohs |
| Crystal System | Orthorhombic |
Did you know...?
Due to its perfect cleavage, topaz is a "tricky" gem: although it is very hard (8 on the Mohs scale), a sharp blow at the right angle can split the stone cleanly in two. The famous "Braganza Diamond," a 1,680-carat jewel set in the Portuguese crown, was believed for centuries to be a diamond, but is actually a colorless topaz of exceptional clarity. Nearly all the blue topaz seen in jewelry stores today has been treated with radiation and heat to achieve those intense tones, as natural blue is very pale and rare.
New-Age Properties
Topaz is known as the "stone of intention" and abundance. It is said to help direct energy to where it is most needed, aiding in the manifestation of desires and goals. It is linked to the solar plexus chakra (yellow topaz) and the throat chakra (blue topaz). Spiritually, it brings joy, generosity, and health. It is an excellent stone for visualization and meditation, as it helps cleanse the aura and attune to higher planes of consciousness. It is believed to help in finding one's own path and trusting the decisions made.