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Hibeads.com Direct You Choose Turquoise Jewelry
Turquoise is an opaque, blue-to-green mineral that is a hydrous phosphate of copper and aluminium, with the chemical formula CuAl6 (PO4)4(OH) 8·4H2O. It is rare and valuable in finer grades and has been prized as a gem and ornamental stone for thousands of years owing to its unique hue. In recent times turquoise, like most other opaque gems, has been devalued by the introduction of treatments, imitations, and synthetics onto the market.
The substance has been known by many names, but the word turquoise was derived around the 16th century from the French language turquoise, for Central Asian material which was early imported through Turkey
Properties of turquoise
Even the finest of turquoise is fracturable, reaching a maximum hardness of just under 6, or slightly more than window glass. Characteristically a cryptocrystalline mineral, turquoise almost never forms single crystals and all of its properties are highly variable. Its crystal system is proven to be triclinic via X-ray diffraction testing. With lower hardness comes lower specific gravity (2.60–2.90) and greater porosity: These properties are dependent on grain size. The luster of turquoise is typically waxy to subvitre, and transparency is usually opaque, but may be semi translucent in thin sections. Color is as variable as the mineral's other properties, ranging from white to a powder blue to a sky blue, and from a blue-green to a yellowish green. The blue is attributed to idiochromatic copper while the green may be the result of either iron impurities (replacing aluminium) or dehydration.
The refractive index (as measured by sodium light, 589.3 nm) of turquoise is approximately 1.61 or 1.62; this is a mean value seen as a single reading on a gemmological refractometer, owing to the almost invariably polycrystalline nature of turquoise. A reading of 1.61–1.65 (birefringence 0.040, biaxial positive) has been taken from rare single crystals. An absorption spectrum may also be obtained with a hand-held spectroscope, revealing a line at 432 nanometres and a weak band at 460 nanometres (this is best seen with strong reflected light). Under long wave ultraviolet light, turquoise may occasionally fluoresce green, yellow or bright blue; it is inert under shortwave ultraviolet and X-rays.
Turquoise is insoluble in all but heated hydrochloric acid. Its streak is a pale bluish white and its fracture is conchoidal, leaving a waxy luster. Despite its low hardness relative to other gems, turquoise takes a good polish. Turquoise may also be peppered with flecks of pyrite or interspersed with dark, spidery limonite veining.
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How do I cook "QUINOA"?
Quinoa (keen-wah) looks like little bell pepper seeds or little beads, but it's a grain. I've been told it's the only grain that's a complete protein and contains all 9 essential amino acids and it's a good source of magnesium.
So, my question is, how do I cook this, does anyone have any recipe I can follow?
Thanks....
2 cups quinoa
1 cup wild rice
1 tablespoon olive oil or peanut oil
1 cup mushrooms, diced
1/2 cup diced chives
1/2 cup diced orange bell pepper
1/2 cup diced yellow bell pepper
1 teaspoon sea salt
1 teaspoon cayenne or crushed red pepper
Directions
In a large skillet, bring 4 cups of water to a boil. Add the quinoa and cook, stirring occasionally, until it expands out of its shell, about 10 minutes; be careful not to overcook it.
In a medium saucepan, bring 2 cups of water to a boil. Add the rice and cook, stirring occasionally until done, about 20 minutes.
In a large skillet, heat the olive oil over medium heat. Add the mushrooms, chives, bell peppers, salt, and cayenne pepper. Cook, while stirring, for about 3 minutes. Add the quinoa and rice and stir until hot. Serve immediately.
