0.82 Ct. Blue Cabochon Sapphire from Montana

This translucent 0.82 carat round Montana blue sapphire measures 5.65 x 5.60 x 2.44 mm, and is shaped as a classical cabochon to emphasize internal color zoning and soft light diffusion. The cabochon cut features a well centered domed crown and a gently polished pavilion, with a dome height calibrated to retain depth of color while maintaining stable bezel seating. Clarity is graded very slightly included when evaluated at eye level, presenting fine silk and discrete needle like and feather type inclusions which contribute character without compromising visual appeal. The stone exhibits medium color intensity in a cool blue range characteristic of Montana provenance, with subtle banding of hue visible through the domed surface. The piece has an excellent polish, yielding even light return across the dome and minimizing surface blemishes. Enhancement by heat treatment has been applied to stabilize and improve color uniformity, and the treatment is permanent when exposed to normal wear conditions. The combination of translucent body, medium intensity, and the cabochon execution makes this sapphire particularly expressive under variable lighting, showing soft saturation and a pleasing velvety lustre rather than sharp facet derived brilliance.

From a durability and daily wear perspective this sapphire is an excellent choice. Sapphire is a corundum variety with a Mohs hardness of nine, providing high scratch resistance for rings, bracelets, pendants, and everyday necklaces. The cabochon profile reduces the risk of edge chipping by distributing force over a rounded surface, and the measured girdle proportions and chosen dome height are well suited to secure bezel or low prong settings that protect the perimeter during routine activity. Heat treatment is stable and does not reduce hardness or toughness, however the presence of internal inclusions means care should be taken to avoid severe mechanical shock or prolonged exposure to strong acids and bleaches. Recommended maintenance includes gentle cleaning with warm water, mild detergent, and a soft brush, and professional inspection for secure settings at regular intervals. At The Natural Sapphire Company we select and finish each cabochon to industry leading standards, ensuring proportion, polish, and structural integrity that meet the expectations of knowledgeable buyers seeking a durable, character rich sapphire for daily wear.