2.94 Ct. Swiss Blue Topaz from Brazil

One beautiful transparent two point nine four carat round shape Swiss blue topaz, with dimensions of eight point zero seven by eight point one one by five point six eight millimeters, is offered by The Natural Gemstone Company. This gem is fashioned in a mixed brilliant cut, combining a faceted crown that enhances scintillation with a pavilion engineered for controlled color return. The proportioning yields a gem that reads slightly deeper in profile, producing a vivid visual presence when set in jewelry. The intense color intensity is true to the Swiss blue designation, showing a clean, even blue tone across the table and facets, while the excellent polish contributes to a crisp, reflective surface that maximizes luster and apparent brightness.

Grading details are careful and conservative, the clarity grade is described as very very slightly included as evaluated at eye level, indicating that the stone is effectively eye clean for typical viewing distances, with any inclusions being minute and only evident under magnification. For an educated buyer, this degree of clarity is significant because it preserves maximum light return and contrast between facets, which in combination with the mixed brilliant design enhances both sparkle and color saturation. The cut quality and facet symmetry are important attributes, and in this example they are executed to a level that produces even light distribution, limited extinction, and a pleasing face up size for the given carat weight. Optical and physical parameters for topaz in general are relevant to understanding performance, topaz has a refractive index in the range of about one point six one to one point six four, and a specific gravity around three point five three to three point five seven, values that contribute to its substantial weight relative to visually similar gems.

This Swiss blue topaz has been enhanced by irradiation, a standard and widely accepted treatment in the trade that creates or intensifies blue color by altering color centers in the crystal lattice. Irradiation, when performed and disclosed responsibly, yields a stable color under normal light exposure and typical wear conditions, and is a transparent disclosure point that informs long term expectations for appearance and value. The origin of this specimen is Brazil, a source noted for producing high quality topaz crystals that, when cut well, display excellent transparency and consistent color distribution. For collectors and designers who value provenance, a Brazilian origin combined with responsible treatment disclosure is a meaningful attribute, reflecting a traceable supply chain and alignment with current standards in gemstone commerce.

Durability is a practical consideration for any buyer, and topaz rates eight on the Mohs scale of mineral hardness, which places it above quartz, which rates seven, and below corundum, which rates nine, and diamond, which rates ten. This hardness delivers very good resistance to everyday abrasion, making topaz suitable for most jewelry applications, while requiring mindful handling because topaz does exhibit a distinct cleavage direction that can cause splitting if struck sharply along its cleavage plane. For this reason, settings that offer protective prong work or bezels are recommended for rings intended for frequent wear, and careful mounting aligned to minimize impact across cleavage planes will preserve the gem. Routine cleaning with warm soapy water and a soft brush is appropriate, and exposure to harsh chemicals and sudden extreme temperature shifts should be avoided to maintain polish and color stability. For the educated buyer, the combination of nearly three carats of intense Swiss blue color, a very very slightly included clarity grade, precise mixed brilliant cutting, and documented Brazilian origin makes this topaz a compelling selection, and The Natural Gemstone Company stands ready to provide further gemological information, imaging, and optional third party grading guidance for buyers who require formal documentation.