5.99 CT Certified Natural Star Ruby Loose Gemstones 6 Rays Star Cabochon Polished Stone 11×9.7 mm

Star ruby is a fascinating variety of ruby known for its unique asterism, which creates a distinct star-shaped pattern across the surface of the gemstone when viewed under a single light source. Here are some key points about star ruby:

1. Asterism: The most distinguishing feature of star ruby is its asterism, which is caused by aligned needle-like inclusions within the ruby crystal. When illuminated with a single light source, typically a point source such as a lamp or sunlight, these inclusions reflect light in a way that forms a six-rayed star pattern on the surface of the gemstone. The phenomenon is known as “asterism,” and the star pattern is visible from different angles as the gemstone is moved.
2. Color: Like other rubies, star rubies exhibit a rich red color caused by the presence of chromium within the crystal structure. The color intensity can vary from pinkish-red to deep crimson, with the most prized stones displaying a vivid and saturated hue.
3. Origin: Star rubies are found in various locations worldwide, including Myanmar (formerly Burma), Sri Lanka (formerly Ceylon), Thailand, Madagascar, and Tanzania. Burmese star rubies are particularly renowned for their exceptional asterism and vibrant color.
4. Clarity: Star rubies may contain inclusions that are aligned in a way to enhance the asterism effect. These inclusions, known as “silk,” contribute to the star’s visibility and overall appearance. While clarity is essential in evaluating star rubies, the presence of silk is often considered desirable as it enhances the gemstone’s uniqueness.
5. Durability: Star rubies, like other varieties of ruby, are highly durable gemstones with a hardness of 9 on the Mohs scale. This makes them suitable for use in various types of jewelry, including rings, earrings, pendants, and bracelets.
6. Uses: Star rubies are highly valued for use in fine jewelry, particularly in pieces where the asterism can be prominently displayed. They are often cut into cabochons to maximize the visibility of the star pattern, although faceted star rubies are also available. Star rubies are popular for use in rings, particularly as center stones in statement pieces and cocktail rings.
7. Care and Maintenance: Star rubies require minimal care to maintain their beauty. Clean them regularly with mild soap and warm water, using a soft brush to remove any dirt or debris. Avoid exposing star rubies to harsh chemicals, extreme temperatures, or sudden temperature changes, as these can damage the gemstone.

Overall, star ruby is a captivating and highly prized gemstone prized for its unique asterism, vibrant color, and exceptional beauty. Whether worn for its aesthetic appeal or cherished for its rarity, star ruby continues to captivate gem enthusiasts and jewelry lovers worldwide.