7.78 Ct. Yellowish Green Tourmaline from Brazil

This transparent 7.78 carat tourmaline presents an asscher cut with an octagonal outline, and precise dimensions of 11.86 by 10.73 by 8.76 mm. The gem displays a vivid yellowish green hue with intense color saturation and excellent polish, attributes that are immediately evident in the face up presentation. Clarity has been graded as slightly included, evaluated at eye level, and the stone remains visually clean with minimal disruptions to light performance. There has been no enhancement to this material, and the tourmaline is a natural specimen originating from Brazil. The Natural Gemstone Company provides these measured details to support design decisions and to confirm the gem is offered in a natural, untreated state.

The asscher cut and the substantial 7.78 carat weight make this example particularly well suited to custom jewelry work where both presence and precision are required. The square stepped pavilion and truncated corners of the asscher form produce broad, controlled flashes of light and a defined geometric silhouette that complements architectural and vintage inspired designs. At the listed dimensions the stone sits in a size range that accommodates a variety of settings, from single stone solitaire rings to centered pendants and cocktail rings that benefit from a bold table and proportional girdle. The combination of intense color and step facets results in color depth that reads consistently across the table, allowing designers to showcase hue as the principal design element rather than relying on dispersed brilliance alone.

Practical considerations for setting this gem are straightforward and favorable for custom fabrication. The clean facet junctions and excellent polish facilitate secure bezel seats and precise prong placements, and the slight inclusions noted at eye level do not compromise structural integrity for standard ring and pendant mounts. Because the tourmaline is untreated, standard jeweler practices apply, and the stone will respond predictably to polishing and setting work without concern for color alteration from heat or irradiation. Its octagonal outline is particularly amenable to bezel settings that emphasize the geometric form, to halo designs that increase perceived size while retaining the clear table, and to step oriented settings that echo the cut lines of the gem. For designers seeking a modern classic or an Art Deco interpretation the asscher geometry combined with the yellowish green tone offers versatile aesthetic directions, and the physical dimensions provide ample metal room for secure mounting while maintaining an elegant profile.

When commissioning a piece through The Natural Gemstone Company this tourmaline’s measured attributes support accurate CAD modeling and prototype fitting, reducing iteration and ensuring the finished piece meets proportional expectations. The documented dimensions and clarity assessment help in selecting complementary accent stones and metal widths, and the natural Brazilian origin can be cited as part of provenance for clients who value traceable sourcing. For custom projects where the central stone must read as the primary visual focus, the balance of weight, color intensity, cut symmetry, and polish present in this 7.78 carat asscher cut tourmaline offers a reliable and attractive option. For technical inquiries related to setting tolerances, mounting suggestions, or to request additional imagery under varied lighting, The Natural Gemstone Company can provide the necessary information to integrate this gem into a considered and enduring custom design.