Natural Blue Star Sapphire 0.50ct 6-ray Star 4.7mm

A small but striking blue star sapphire round cabochon with a deep navy blue body and a sharply defined 6-ray star that radiates in clean blue-white lines from the apex of the dome. Despite its compact 4.7mm size, the star is unmistakable and well-centered, with each arm extending clearly toward the girdle. The deep, saturated blue body is achieved through diffusion treatment, delivering the rich navy tone this type of star sapphire is known for.

From Thailand and diffusion-treated to enhance and deepen its blue color, this round cabochon is ideal for earring studs, stacking rings, or accent cabochons in multi-stone settings where the star effect adds a distinctive optical dimension to smaller stones.

• Stone type: Natural blue star sapphire
• Phenomenon: Asterism (6-ray star)
• Treatment: Diffusion
• Cut: Round cabochon
• Size: 4.7mm
• Weight: 0.50ct
• Clarity: Opaque
• Origin: Thailand

Natural blue star sapphire, September birthstone - sold loose, single stone.