1.58 Ct. Pinkish Red Spinel from Tanzania

This GRS certified pinkish red spinel is a technical demonstration of material quality and lapidary skill, a transparent cushion shape weighing 1.58 carat, with precise dimensions of 7.52 by 6.90 by 4.00 millimeters. The cutting style is faceted, executed as a mixed brilliant cut, combining the light performance of brilliant style facet geometry with the controlled color presentation of modified pavilion facets. The gem was evaluated under standard gemological conditions and given an eye clean clarity grade at eye level, confirming the absence of inclusions that would interrupt light transmission or affect the face up appearance. The color intensity is graded as vivid, a saturated pinkish red that reads consistently across the table and through the crown, and the polish is rated excellent, providing mirror like facet surfaces that maximize return and contrast. The GRS certification documents the natural origin as Tanzania, and the report verifies no enhancement, leaving the stone in its untreated, natural state.

From a cutting and optical design perspective the mixed brilliant execution is calibrated to balance brilliance and color saturation. The cushion outline with gently rounded corners and slightly rectangular proportions produces a significant face up presence, while the mixed brilliant facet architecture concentrates color into the table area without creating a disruptive window. The measured depth of 4.00 millimeters, relative to the average of length and width at 7.21 millimeters, yields a depth ratio of approximately 55.4 percent, a proportion that promotes strong crown refraction and consistent pavilion return. The crown facets are arranged to create a lively scintillation pattern, while the pavilion facets are modified to enhance color concentration, preventing light leakage and preserving the vivid pinkish red hue at multiple viewing angles. Facet junctions are sharp and well aligned, and symmetry is maintained across the girdle to ensure uniform optical performance as the stone is rotated or set in a mounting.

Clarity and size are the principal attributes that make this spinel ideal for a statement piece. At 1.58 carat and with face up measurements exceeding 7.5 by 6.9 millimeters, the stone carries substantial presence for a center gem in a ring or as the focal point of a pendant, while remaining practical for wearable jewelry. The eye clean evaluation means that the gem achieves full transparency to the naked eye, so light travels unimpeded through the profile and returns as saturated color and lively sparkle. In practical terms this translates to a bold, unclouded face up appearance, minimal windowing, and dependable color depth when set. For designs that aim to emphasize the stone as the primary visual element, open prong or cathedral settings provide maximum light exposure, halo settings enhance apparent size while preserving the central color, and bezel or semi bezel mounts offer added security with a controlled reflective environment that can slightly intensify the perceived saturation depending on the metal used.

The Natural Gemstone Company stands behind the craftsmanship and origin of this Tanzanian spinel, offering the accompanying GRS report for independent verification of weight, measurements, clarity evaluation, color grading, cutting style, and the absence of enhancement. The gem’s excellent polish and carefully executed mixed brilliant faceting are the result of deliberate lapidary decisions to optimize both brilliance and color, a balance that is particularly important for pinkish red material where hue and saturation define desirability. For clients building a statement design we recommend selecting mounting geometries and metal colors that complement vivid pinkish red tones, for example warm yellow gold to enhance the red component, or platinum to present the color in a cooler, more contrastive field. Our team can provide technical mounting advice, CAD on request, and secure shipping to ensure the gem arrives ready to be set. This 1.58 carat, cushion mixed brilliant spinel is a rare combination of size, clarity, and natural vivid color, an untreated specimen that commands attention as a refined and technically accomplished centerpiece in any collection.