A pair of Indian labradorite, 28.001 carats

Technical details: Type: Labradorite Weight: 28.001 carats Dimensions (mm): 19.92x14.81x6.90 (average) Shape: Pear Color: Brownish-green Clarity: Eye clean Transparency: Opaque Hardness: 6.0-6.5 Treatment: Untreated Origin: India Certification: Certificate from the Saudi Laboratory (MT) - website (www.mtgl.com.sa) Labradorite is a mineral belonging to the Plagioclase Feldspar group, and is known for a unique optical phenomenon called "Labradorescence" or "Schiller Effect," where it displays a rainbow-like play of colors resembling a rainbow of metallic blue, green, yellow, or golden hues when the stone is moved. Usually, Labradorite is dark gray to black in its normal state. This mineral forms in basic igneous rocks such as basalt and gabbro.