Natural Star Ruby 3.75ct 6-ray Star Oval Cabochon

A natural Indian star ruby oval cabochon measuring 8.4x6.4mm and weighing 3.75 carats, with a deep purple-red body color and a well-defined 6-ray asterism pattern on the high dome. The silk needle inclusions running through the opaque stone produce the characteristic star when held under direct light, and the richly saturated body color adds visual depth to the cabochon. The slightly elongated oval at this weight gives this piece a strong presence while keeping it within standard setting dimensions.

Star rubies from India are recognized for their strong body color and the dense rutile silk inclusions needed for pronounced asterism. This stone is completely untreated, which is particularly meaningful for star corundum - heating tends to dissolve the silk and diminish the star effect. The 6-ray star is a fully natural optical phenomenon. At 3.75 carats, this is a well-sized star ruby for a feature ring, pendant, or natural gemstone collection focused on star corundum.

• Stone type: Natural star ruby
• Treatment: Untreated
• Cut/Form: Oval cabochon
• Phenomenon: Asterism (6-ray star)
• Size: 8.4x6.4mm
• Weight: 3.75ct
• Clarity: Opaque
• Origin: India

Natural star ruby, July birthstone - sold loose.