Smoky Quartz Round Faceted Gemstones, AA-Grade

This AA-grade round smoky quartz features a rich, evenly saturated color and the high-quality cut enhances the color and depth. Use this gemstone as a focal point in a simple pendant or ring, or pair it with other gems that offset and highlight its attractive brown hue, such as citrine, to create more complex designs. Smoky quartz—often incorrectly called smoky topaz—ranges from almost clear to nearly opaque. The color is the result of free silicon within the gemstone released by natural irradiation. One of the most common minerals, quartz comes in many varieties and colors. The two main categories are macrocrystalline, which are usually transparent and crystals are visible, and cryptocrystalline, which appear translucent or opaque. The many varieties of quartz each offer distinct characteristics and, according to folklore, their own powers and purposes. Round-cut gemstones are highly popular and the most commonly available. Rio round gemstones are calibrated for size and hand inspected to ensure maximum attractiveness.

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Gemstone type: Quartz
Stone shape: Round
Stone size: 8mm, 4mm, 3mm, 5mm, 2mm, 6mm, 2.5mm
Stone type: Natural
Color: Smoky Brown
Enhancement: Irradiated (R), None (N)
Grade: AA
Mohs hardness: 7, 7.5
Clarity: Eye-clean
Refractive index: 1.544–1.553, 1.554–1.563
Specific gravity: 2.69–2.72, 2.65
Brand: AGTA
Mineral source: BRAZIL
Cutting center: India