0.86 Ct. Purplish Blue Sapphire from Tanzania

This 0.86 carat cushion shape sapphire is a transparent, purplish blue gem that exemplifies balanced proportions and refined finishing. Measuring 5.97 by 4.88 by 3.20 millimeters, the stone displays a face up presence consistent with its carat weight, and a depth percentage of approximately 59 percent that supports an appealing visual diameter. The cutting style is a mixed brilliant cut, combining small, well placed facets that enhance scintillation with broader facets that allow the stone to present its color evenly across the table. Clarity is graded as very slightly included when evaluated at eye level, indicating inclusions are minor and do not interfere with typical unaided visual appreciation. The polish is excellent, producing a clean, reflective surface that contributes to overall brilliance and the perception of transparency.

Colour and optical performance are central to this sapphires character. The purplish blue hue reads as an expressive, slightly violet leaning blue at typical viewing distances, with an intense color intensity that is neither muted nor overly dark. This intensity preserves good saturation and vibrancy when set in jewelry, while still allowing light to interact across the pavilion and crown to generate lively faceting and flash. The mixed brilliant cut is chosen to balance color saturation with light return, so the gem displays both strong internal brightness and well defined facet patterning. With its transparency and excellent polish, the stone yields crisp reflections and crisp facet junctions, which together create a refined, lively appearance under both ambient and directed lighting.

The sapphire is of Tanzanian origin, sourced from a region known for producing sapphires with a broad range of tones and attractive color characteristics. Importantly, this gem has no enhancement, meaning it is free from heat treatment, diffusion, or fracture filling. The absence of enhancement denotes a natural state that conveys intrinsic color and formation history, and it can be a deciding factor for collectors and customers who prioritize untreated gemstones. As a corundum species, sapphire has a Mohs hardness of nine, a toughness and resilience suitable for everyday wear when set appropriately, and resistance to scratches is among the highest for colored gemstones. Routine care should include avoiding exposure to aggressive chemicals, securing the setting against hard knocks, and using gentle cleaning with warm soapy water or a soft brush. Professional cleaning by a trusted jeweler is recommended for settings with multiple stones or intricate metalwork.

The gem is highly versatile, appropriate for both casual and formal applications. Its modest carat weight and measured dimensions allow it to function elegantly as a central stone in a refined solitaire ring or pendant, or as a tasteful accent in a multi stone composition. For everyday wear, a bezel or low profile prong setting will protect the stone and present a contemporary, understated look that complements casual attire. For formal settings, the intense purplish blue pairs well with both white and yellow precious metals, and benefits aesthetically from diamond side stones or a halo to increase perceived size and enhance contrast. The stone also adapts well to non ring jewelry, including studs, earrings, and pendants, where its mixed brilliant cut and transparent body will deliver consistent sparkle under varied lighting. Presented by The Natural Sapphire Company, this cushion shape purplish blue sapphire is a naturally sourced, untreated example that harmonizes practical durability with refined optical appeal, suitable for clients seeking a gemstone that transitions seamlessly from everyday wear to special occasions.