5.10 Ct. Bluish Green Sapphire from Tanzania

One transparent, 5.10 carat cushion shape bluish green sapphire, dimensions 10.22 x 9.11 x 5.69 mm, mixed brilliant cut, clarity grade very slightly included evaluated at eye level, intense color intensity, excellent polish, no enhancement, origin Tanzania, offered by The Natural Sapphire Company. These specifications establish the gemstone as a clearly defined and substantial choice for an engagement ring, with precise measurements and documented optical quality. The weight and proportions are balanced to give a strong presence on the finger while maintaining classical cushion proportions, and the mixed brilliant cut has been selected to optimize light return and create a lively interplay of brilliance and depth across the table and crown facets. The clarity grade of very slightly included evaluated at eye level indicates the stone is largely clean to the unaided eye, with inclusions that do not detract from visual performance or structural integrity. The absence of enhancement confirms the sapphire is in its natural state, an important consideration for buyers who prioritize authenticity and long term value.

Visually, the sapphire displays a bluish green hue with intense saturation, a color that shifts subtly with changes in lighting and viewing angle. The cushion outline softens the gem s profile, while the mixed brilliant faceting pattern introduces a dynamic scintillation that complements the stone s depth of color. The excellent polish enhances facet definition and surface brightness, contributing to crisp reflections and clear contrast between light and dark areas. At the dimensions provided the stone shows a generous table and a well proportioned pavilion depth, elements that together produce strong face up color while preserving internal light performance. The sapphire s transparent clarity allows light to penetrate and refract across multiple planes, revealing nuanced secondary tones that can range from cooler teal to warmer green depending on ambient light. This variability is part of the sapphire s appeal, offering a living color quality that reads differently in daylight, interior lighting, and evening settings, and that provides a singular character compared with more uniform color gemstones.

From a practical and design perspective, a 5.10 carat cushion sapphire is particularly well suited to engagement jewelry, combining presence with wearability and proven durability. Sapphire rates nine on the Mohs scale, second only to diamond in common jewelry use, and it offers excellent resistance to abrasion and everyday wear. The cushion shape is versatile in setting choices, and the mixed brilliant cut favors both solitaire and halo designs because it balances fire and depth. For protection and comfort, bezel settings or low profile four prong settings provide security while preserving the stone s visual impact, and the gem s dimensions accommodate a range of mounting styles including classic solitaires, vintage inspired settings, and contemporary east west placements. Metal selection can enhance the sapphire s bluish green tone, with platinum or white gold emphasizing cooler aspects of the color, and warmer alloys such as yellow or rose gold bringing out the stone s green nuances. The untreated nature and Tanzanian origin of this sapphire add to its suitability for an engagement choice, offering a natural provenance and aesthetic distinction that many couples value when selecting a ring intended to be worn every day and passed between generations.

Purchase of this sapphire through The Natural Sapphire Company includes detailed documentation of the stone s characteristics, including weight, dimensions, cut description, clarity assessment, color intensity, and origin. Our grading and sourcing practices are designed to provide transparency and confidence in the gem s identity and condition, and the no enhancement status is clearly stated to support long term satisfaction and potential appraisal considerations. For care, routine cleaning with warm water, mild soap, and a soft brush will maintain the sapphire s brilliance, and periodic inspection of the mounting by a qualified jeweler will ensure prongs and settings remain secure. Custom mounting and design consultation services are available to tailor the ring to personal preference and lifestyle, and advice on complementary side stones, setting height, and metal choice can be provided to achieve the desired balance of protection and visual emphasis. For those seeking an engagement option that is distinct, durable, and rooted in natural character, this 5.10 carat Tanzanian cushion sapphire represents a considered selection, and The Natural Sapphire Company stands ready to assist with documentation, design, and delivery to ensure the finished piece meets enduring expectations.