5.84 Ct. Rubellite Tourmaline from Ceylon (Sri Lanka)

This rubellite tourmaline, sourced from Ceylon Sri Lanka, presents as a transparent cushion shape weighing 5.84 carats, with exact dimensions of 13.16 by 10.60 by 5.70 millimeters. The mixed brilliant cut pairs a brilliant facet arrangement on the crown with a step influenced pavilion, engineered to maximize both fire and color saturation in a stone of this profile. The length to width ratio sits at approximately 1.24, yielding a gently elongated cushion outline that is visually substantial yet classic in proportion. The measured depth relative to the average of the length and width is approximately 48 percent, a depth that supports strong light return without compromising the vivid red body color. Clarity is assessed as very slightly included at eye level, meaning inclusions are minimal and do not materially interrupt the visual flow of color or the faceting interplay. Color intensity is classified as intense, with a consistent saturation across the table and crown facets, and the polish is excellent indicating crisp facet junctions and mirror like facet planes. No enhancement has been performed, which preserves the natural chromatic and physical properties of the crystal, and provides a true, unaltered material for fine jewelry.

From a custom jewelry perspective the stone dimensions and cushion silhouette make this rubellite exceptionally versatile as a center stone. The 13.16 by 10.60 millimeter footprint is ideal for a prominent solitaire ring, a substantial pendant, or a showcase three stone composition where the central stone maintains dominance without overwhelming supporting accents. The mixed brilliant faceting enhances scintillation when viewed face up, so settings that expose the pavilion to light return such as four or six prong heads, low profile bezels with open culets, or modern halo constructions will emphasize brilliance while protecting the softer corners inherent to a cushion outline. The elongated ratio is particularly favorable for east west mounts and for designs that require a slightly longer visual axis, such as articulated drop pendants or tapered shank rings. Because the clarity is very slightly included at eye level, open settings are entirely appropriate, and orientation during setting can align any minor inclusions with the stone pavilion or along a facet junction to minimize visibility under inspection. Accent choices may include small near colorless diamonds to increase perceived brightness, or rose gold accents to warm the perceived hue, while platinum settings will provide a neutral, high contrast backdrop that emphasizes the rubellite red.

Technical considerations for fabrication and long term wear should guide the jeweler and the client. The excellent polish and precise facet geometry require careful handling to preserve the crisp facet edges during bezel milling or prong work. The crown to pavilion facet transition in a mixed brilliant cut benefits from settings that do not trap dirt or moisture at the girdle, so a clean seat with a controlled bezel lip or well opposed prongs is recommended. Given the natural state and lack of enhancement, thermal exposure should be minimized during stone setting and any post setting treatments. Ultrasonic and steam cleaning can be used cautiously, however final cleaning protocols should be determined by the bench jeweler based on inclusion characteristics and mounting complexity. For secure hand setting on finger jewelry, prong tips sized to approximately one third of the thou measured girdle footprint will provide balanced retention without overpowering the stone table, and a slight inward roll at the prong head will protect the cushion corners. For bezel work, a micro ledge that follows the cushion silhouette will preserve the face up presentation and reduce light leakage, while retaining mechanical security for everyday wear.

At The Natural Gemstone Company we emphasize the interaction between cut, color and clarity when advising on custom designs, and we can provide detailed facet maps and high resolution images to assist your bench in reproducing the intended optical performance. The natural, intense red tone, the sizable 5.84 carat weight, and the mixed brilliant cushion silhouette combine into a centerpiece material that rewards considered design and precise craftsmanship. For clients seeking a statement item that reads as both technically refined and visually compelling, this rubellite offers a rare combination of size, unenhanced color purity, and cutter executed polish, making it an excellent candidate for a bespoke ring, pendant, or heirloom project. Contact The Natural Gemstone Company for further measurements, facet orientation documentation, and recommendations for compatible mounting strategies.