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GEMHUB 8 Rays Natural Green Star Sapphire 13 mm 9.5 Carat 1 Pc Loose for Necklace Stunning Star 8 Rays Green Cabochon Sapphire

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$67.49

$ 32 .99 $32.99

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About this item

  • Gemstone Type: Star Sapphire|Gemstone Weight: 9.5 Carat|Gemstone Creation: Natural|Gemstone Color: Green|Gemstone Shape: Oval|Dimension: 13x9x6|No. Of Pcs: 1 Pc|Country of Origin: India|Gemstone Effect: Asterism
  • Green star sapphire is a unique and captivating gemstone that displays a phenomenon known as asterism. It belongs to the corundum mineral family, which also includes rubies. What sets green star sapphire apart is its exceptional optical property called asterism, which is the formation of a star-shaped pattern when viewed under a single light source.
  • The green color of this gemstone ranges from pale green to deep emerald, with varying degrees of transparency. The asterism effect is caused by intersecting needle-like inclusions of the mineral rutile within the sapphire crystal, creating a distinctive star-shaped pattern. The most desirable green star sapphires exhibit a sharp, well-defined star that moves as the stone is rotated.
  • These gemstones are cherished for their beauty and are believed to possess metaphysical properties such as promoting intuition, clarity, and balance. Whether worn as jewelry or admired for its natural wonder, the green star sapphire is a captivating gemstone that combines color, durability, and a mesmerizing starry display.
  • Like other sapphires, green star sapphire has excellent durability, ranking 9 on the Mohs scale of hardness. It is a popular choice for jewelry due to its unique appearance and intriguing optical phenomenon. Green star sapphires are often cut into cabochon shapes to enhance the star effect and maximize its visibility.


A natural green star sapphire is a type of gemstone that exhibits a star-like phenomenon known as asterism. It is a variety of corundum, which is the same mineral family as rubies and sapphires. The green color in a green star sapphire is typically caused by traces of iron or chromium within the crystal structure. What makes star sapphires unique is the presence of intersecting needle-like inclusions that create a six-rayed star pattern on the surface of the stone when properly cut and polished. These inclusions are known as rutile needles or silk. When a star sapphire is exposed to a direct light source, such as a single point of light, it displays a distinct star-shaped reflection that moves across the surface as the stone is rotated. The value and desirability of a green star sapphire are determined by various factors, including the intensity and saturation of the green color, the clarity and visibility of the star, and the overall quality of the gem. The star should be sharp and well-centered, ideally visible under both natural and artificial light. As with any gemstone, it is essential to ensure the authenticity and quality of a green star sapphire before making a purchase. It is recommended to consult with a reputable gemologist or jeweler who can provide a professional evaluation and certification of the gem's authenticity and characteristics.