1.64 Ct. Topaz from Ceylon (Sri Lanka)

This 1.64 carat blue topaz presents an emerald cut outline with a checkerboard facet scheme, offering a disciplined rectangular silhouette and a lively, multi faceted crown. Exact dimensions are 8.00 x 6.03 x 3.74 mm, which yields an overall depth of approximately 53 percent relative to the average girdle diameter, a proportion that balances table size with pavilion volume to optimize face up color and light return. The checkerboard cut across the crown generates a mosaic of small, flat facets that increase scintillation and apparent brilliance, while the step influenced pavilion facets preserve the classic emerald silhouette and provide controlled light leakage. Clarity is graded very slightly included at eye level, indicating minimal internal features that do not interrupt the stone s transparency or its clean window when viewed table up. The medium intense blue hue, developed through measured irradiation enhancement, is evenly distributed and exhibits strong saturation without appearing overly dark, making this specimen particularly effective under both natural and artificial lighting. The polish has been assessed as excellent, and facet junctions and symmetry are precise, resulting in crisp facet reflections and stable optical performance. The material is documented from Ceylon, Sri Lanka, and the irradiation treatment used to produce the blue tone is industry standard for topaz, delivering a durable color for normal wear.

For custom jewelry applications this gem is exceptionally well suited, the 8.00 x 6.03 mm footprint corresponds neatly to standard mounting templates for solitaire rings, three stone side settings, and medium halo designs, while the 1.64 carat weight provides noticeable presence without requiring an oversized setting. The rectangular emerald outline complements elongated finger profiles when the long axis is set parallel to the finger, and the checkerboard crown rewards movement with consistent flashes that play against diamond halos or accent stones. Because the stone displays very slight inclusions at eye level, secure prong work or a low bezel can protect the girdle and pavilion without obscuring the lively face up presentation. Bench considerations include allowing a standard bezel seat that respects the 3.74 mm depth, and orienting the checkerboard pattern so the main table reads cleanly with the mounting orientation. The Natural Gemstone Company provides this blue topaz as a precisely cut, well finished choice for bespoke commissions, and we can advise on setting proportions and mounting approaches to maximize the gem s optical potential and longevity.