11.54 Ct. Purple Amethyst from Brazil

This item is a transparent 11.54 carat heart shaped purple amethyst, presented by The Natural Gemstone Company, with precise dimensions of 15.37 by 15.94 by 9.63 millimeters. At 11.54 carats this piece occupies the upper echelon of commercially available amethyst sizes, a weight that immediately conveys premium quality and presence when set in fine jewelry. The proportions of the gem yield an approximate depth percentage of 61.5 percent, calculated from the measured depth against the average of the length and width, a proportion that supports both strong color saturation and efficient light return for a mixed brilliant faceting scheme. This heart profile measures large enough to serve as a dramatic solitaire focal point, while retaining controlled proportions that avoid a flattened or overly deep appearance, qualities that collectors and designers consistently seek in premium calibrated stones.

The cutting style is faceted with a mixed brilliant design, an approach that combines the rhythmic broad facets of step cutting with the scintillating angles of brilliant cutting to maximize both color and sparkle. On this heart shaped amethyst the crown exhibits evenly graduated star and kite facets that transition into a well formed table, while the pavilion utilizes brilliant style facets to generate dynamic scintillation and specular reflections. The heart outline has precisely formed lobes and a well defined cleft, the symmetry shows careful attention to alignment of the bilateral axes, and the girdle presents consistent thickness, supporting secure bezel or prong settings without compromising light performance. The excellent polish across crown and pavilion facets enhances facet contrast and contributes to crisp facet junctions, a finishing stage that is especially important on a stone of this size to maintain visual harmony under magnification and in direct wear.

Clarity is graded as very very slightly included evaluated at eye level, a designation that indicates inclusions are minimal and do not materially impact the gem visually to the unaided eye. For an amethyst weighing 11.54 carats, this clarity is notable, as larger rough commonly exhibits more frequent internal zoning or feather type features. The vivid color intensity is evenly distributed throughout the body, producing a saturated purple with strong tone and saturation that resists looking washed or overly dark in typical daylight and artificial illumination. Origin is Brazil, a source known for consistent crystal quality and attractive purplish hues, and this specimen has undergone controlled heat treatment as an enhancement to stabilize and intensify the violet saturation. Heat treatment in amethyst is an accepted and stable enhancement when fully disclosed, and in this example it has been applied to produce a vivid and uniform color without introducing instability to the crystal structure.

From a practical and design perspective the 11.54 carat weight positions this heart shaped amethyst as a premier center stone for high end rings, pendants, and bespoke commissions where both scale and color are critical. The combination of a measured depth near 61.5 percent, mixed brilliant faceting, excellent polish, and a clarity grade of very very slightly included yields exceptional face up color and lively optical performance, making the gem adaptable to both open and closed back mounts depending on desired color depth and light interaction. Standard gemological parameters for quartz, including a refractive index range approximately 1.544 to 1.553 and a hardness of seven on the Mohs scale, indicate the material is durable for daily wear with standard care, and the disclosed heat treatment should be considered when planning any high temperature setting or repair work. The Natural Gemstone Company stands behind the sourcing and full disclosure of this gem, and we welcome inquiries for additional certified measurements, mounting recommendations, and custom design specifications to ensure that this 11.54 carat heart shaped amethyst achieves its optimal expression in your finished piece.