Star Ruby, 2.778 carats

Technical details: Type: Star Ruby Weight: 2.778 carats Dimensions (mm): 8.84x6.92x3.99 Shape: Cabochon Color: Red Clarity: Eye clean Transparency: Transparent Hardness: 9.0 Treatment: Glass Filled Origin: Africa Certification: Certificate from Saudi Laboratory (MT) - website (www.mtgl.com.sa) The Star Ruby is a rare type of Ruby that shows a unique optical phenomenon known as "Asterism" or "Star effect." This phenomenon appears as a bright six-ray star that shows and moves on the polished surface of the dome-shaped (cabochon) stone when light falls on it. This effect is attributed to the presence of fine needle-like inclusions of Rutile arranged in a cross pattern inside the ruby crystal. The Star Ruby features the usual red color of ruby with this bright star.