Grey Star Sapphire, The Sparkling Birthstone for February 6th
Birthstone for February 6th: Grey Star Sapphire Description of Grey Star Sapphire Grey Star Sapphire is a rare and intriguing variety of sapphire, distinct for its soft, muted grey hue and the unique star-shaped pattern that appears on its surface when viewed under direct light. This star effect, known as asterism, is caused by the presence of needle-like inclusions of rutile within the sapphire. These rutile inclusions create a star-shaped reflection that can appear with four, twelve, or even twenty-four rays, depending on the stone’s formation and the angle of light....