Topaz stone, 5.15 carats

Technical details: Type: Topaz Weight: 5.15 carats Dimensions (mm): 12.04x10.00x6.40 Shape: Pear Color: Light blue Clarity: Eye-clean Transparency: Transparent Hardness: 8.0 Treatment: Untreated Origin: Unknown Certification: Certificate from Saudi Laboratory (MT) - website (www.mtgl.com.sa) Topaz is an aluminum silicate and fluorine mineral, and is considered one of the well-known gemstones for its hardness and beauty. Topaz occurs in a wide range of colors, including transparent (colorless), yellow, golden, blue, pink, red, and brown. Some types of topaz are often heat-treated or irradiated to enhance or change their colors, especially to produce the vibrant blue color. Topaz forms in acidic igneous rocks such as granite and pegmatite.