Blue Onyx Cabochon (AA Grade) are polished stones made fro0m blue onyx, a variant of the onyx mineral that features beautiful blue and white banding. Onyx is a type of chalcedony, which is a microcrystalline form of quartz. Blue onyx is particularly valued for its aesthetic appeal and is often used in jewelry-making, particularly in cabochons, which are polished, non-faceted gems typically used in rings, pendants, and earrings.
Key Characteristics: Chemical Formula: SiO₂ (Silicon Dioxide)Color: Predominantly blue with white or light-colored banding. The intensity of the blue can vary, ranging from light sky blue to deep cobalt shades.
Luster: Waxy to vitreous (glassy), with a smooth finish that enhances its visual appeal.
Hardness: 6.5–7 on the Mohs scale, making it relatively durable for jewelry applications.
Transparency: Opaque to translucent, depending on the thickness and quality of the stone.
Streak: White. AA Grade Quality:Quality Indicators: AA grade onyx cabochons are characterized by their high-quality color saturation, clarity, and lack of inclusions or imperfections. The blue is typically vibrant and uniform, and the banding should be distinct and aesthetically pleasing.
Polishing: AA grade cabochons are polished to a high shine, enhancing the natural beauty of the stone and making it more suitable for jewelry.
Use in Jewelry: AA grade cabochons are often used in higher-end jewelry pieces, appreciated for their aesthetic qualities and the skill involved in their craftsmanship.
Uses: Jewelry Making: Blue onyx cabochons are popular in various types of jewelry, including rings, pendants, earrings, and bracelets. They are often set in silver or gold settings to enhance their beauty. Decorative Items: In addition to jewelry, cabochons can be used in decorative items like paperweights, inlays, or as part of larger mosaic designs.
Care: Cleaning: Blue onyx cabochons can be cleaned with a soft cloth and mild soap. Avoid harsh chemicals that could dull the surface.
Storage: Store separately from harder stones to prevent scratching, and keep away from direct sunlight to avoid color fading.
Conclusion: Blue onyx cabochons (AA grade) are prized for their beauty and durability, making them a favorite choice among jewelers and collectors alike. Whether used in elegant jewelry or for a beautiful edition to your home Decor, these stunning stones offer both aesthetic and emotional benefits.
