0.82 Ct. Greenish Blue Apatite from Madagascar

One beautiful transparent 0.82 carat trillion shape greenish blue apatite is offered by The Natural Gemstone Company, with dimensions of 5.12 by 7.66 by 3.77 millimeters. The stone is expertly faceted into a trillion cut, which creates crisp triangular symmetry and maximizes lively scintillation from each facet junction. The clarity grade is very slightly included, evaluated at eye level, which means that under normal viewing conditions the stone appears exceptionally clean, with only minor internal characteristics that do not detract from its overall transparency. Color intensity is classified as intense, and the surface polish is excellent, yielding strong light return and a silky, reflective finish. Enhancement is disclosed as heat treated, a stable and commonly used treatment that has been applied to optimize the vivid greenish blue hue, and the stone’s reported origin is Madagascar, a recognized source for high quality apatites.

This particular greenish blue hue is notably rare among apatites of comparable size, and that rarity is central to the gem’s appeal to collectors and connoisseurs. Many apatites are available in larger sizes, but large, well saturated, transparent stones with intense greenish blue color are uncommon on the market, especially in the under one carat category where cutting considerations often dilute color. The combination of an intense, evenly distributed greenish blue saturation and a transparent body tone elevates this piece above typical trade examples, making it attractive for bespoke jewelry where color quality is paramount. The trillion cut further amplifies the perceived saturation by concentrating color towards the center, and the elongated proportions deliver an elegant triangular silhouette that will read as larger than the carat weight alone might suggest when set in a ring or pendant.

From a gemological perspective this apatite exhibits the physical and optical properties expected from the species, and these characteristics inform both its care and its desirability. Typical refractive indices for apatite are approximately in the range of 1.63 to 1.65, and birefringence is modest yet noticeable, which can impart a pleasant depth and internal play of color in well cut stones. Specific gravity is around 3.1 to 3.2, consistent with dense, stable crystalline material. Hardness on the Mohs scale is five, which places apatite well below corundum and diamond in terms of abrasion resistance, so practical considerations for daily wear are important. The very slightly included clarity means the stone is essentially eye clean, and the inclusions are unlikely to create weak points, especially given the excellent polish and the care taken by the cutter to preserve structural integrity. Heat treatment disclosure is important, and buyers should know that the treatment applied to this stone is a standard, stable enhancement intended to refine color without compromising long term stability when the gem is worn with normal care.

For the educated buyer, value lies in provenance, transparency, color saturation, and the thoughtful balance of cut and durability. Madagascar sourced apatites are sought after for their clean, vivid greenish blue tones, and The Natural Gemstone Company provides full disclosure about treatments and origin to support confident purchasing decisions. Because apatite is softer than traditional everyday gems, we recommend protective settings such as bezels, lower profile prongs, or halo mounts that reduce exposure to hard knocks, especially for rings. Pendants and earrings are excellent options for showcasing the intense color while minimizing abrasion risk. Cleaning should be performed with warm soapy water and a soft brush, and the use of ultrasonic or steam cleaners should be avoided to prevent damage, do not expose the stone to sudden temperature changes or harsh chemicals. We are happy to assist with custom mounting recommendations, provide additional high resolution images or videos, and arrange secure shipping, because a stone of this color and transparency is rare and benefits from careful handling from cutter to final setting.