1.51 Ct. Purple Sapphire from Madagascar

This transparent 1.51 carat cushion shape purple sapphire measures 6.89 by 5.60 by 4.14 millimeters, yielding a length to width ratio of approximately 1.23 to 1, and a depth of approximately 4.14 millimeters which corresponds to a depth proportion of about 66.3 percent relative to the average diameter. The gem has been fashioned in a mixed brilliant cut, combining a brilliant facet arrangement on the pavilion with modified step or mixed faceting on the crown, an approach that balances strong scintillation with controlled color saturation. The polished girdle and well aligned facet junctions indicate meticulous lapidary execution, and the excellent polish produces crisp facet reflections that maximize return of light through the crown. The cushion outline maintains slightly rounded corners and gently domed crown facets which contribute to both optical performance and secure prong engagement in a ring setting, making the proportions especially suitable for translation into an engagement ring where both presence and wearability are required.

Color is the defining attribute of this stone, evaluated as intense in color intensity, exhibiting a vivid purple saturation with a tone that sits in the medium to medium dark range. The hue displays even distribution across the table and crown facets, with minimal zoning, resulting in a visually consistent appearance face up. Corundum pleochroism can be present in purple sapphires, and this example shows subtle directional color shifts between pure violet and slightly warmer reddish violet when viewed from different orientations, an effect that adds dimensionality under changing light conditions. The documented enhancement by heat treatment has been applied to stabilize and enrich the inherent purple, a widely accepted and durable enhancement in natural sapphire sourcing, and the origin from Madagascar correlates with the geological conditions that produce saturated, eye appealing colors. For clients seeking a color that reads richly in both daylight and incandescent light, this sapphire offers reliable performance and depth, while remaining true to natural stone character.

Clarity has been assessed as slightly included at eye level, indicating the presence of natural inclusions that are modest and do not detract from transparency or overall brilliance when mounted. Under close inspection the internal features serve as identifiers of natural formation and are positioned and sized so as not to compromise structural integrity. The mixed brilliant cut helps to mask and diffuse minor inclusions by breaking light into smaller scintillation patterns, preserving a lively face up appearance. The gem demonstrates excellent polish across tables and pavilion facets, and symmetry is consistent with precision cutting standards, ensuring predictable light behavior in a ring setting. From a practical standpoint the sapphire, as a variety of corundum, rates nine on the Mohs hardness scale, providing excellent resistance to abrasion and suitability for everyday wear, which is a primary consideration for an engagement ring destined for continuous use.

Presented by The Natural Sapphire Company, this 1.51 carat cushion purple sapphire is an elegant choice for an engagement gem for clients who prioritize color intensity and technical cutting quality. The stone lends itself to a range of mounting strategies, including a classic four or six prong solitaire to emphasize table presence, a halo of diamonds to increase perceived size and contrast color, or a low profile bezel for enhanced security and contemporary styling. For metal selection, warmer metals such as yellow gold will gently enhance the purple warmth, while platinum or white gold will provide a modern, high contrast setting that emphasizes saturation and scintillation. Full disclosure of the heat treatment and Madagascan origin accompanies this sapphire, and bespoke setting services are available to align facet orientation and ring architecture with the stone geometry for optimal light performance. Please contact The Natural Sapphire Company to request detailed images, precise setting recommendations, or to commission a custom engagement mounting that preserves the gem proportions and showcases its intense purple character.