63.55 Ct. Blue Topaz from Ceylon (Sri Lanka)

This exquisite transparent blue topaz presents a substantial 63.55 carat weight, with dimensions of 30.00 by 22.06 by 16.08 millimeters, and a fancy shape that showcases a mixed brilliant cut designed to maximize scintillation and return of light. The gem exhibits medium color intensity, a bright and appealing blue that is characteristic of irradiated topaz, and an excellent polish that enhances surface luster and facet definition. Clarity is graded as very slightly included when evaluated at eye level, indicating minimal internal features that do not materially detract from transparency or brilliance at normal viewing distances. The stone originates from Ceylon Sri Lanka, a locale known for producing high quality gemstones, and the color has been produced by irradiation, a widely accepted and stable enhancement method when properly disclosed and applied. These combined attributes yield a visually impressive specimen, suitable for collectors and connoisseurs who appreciate large, well finished colored stones with reliable provenance.

From a technical and practical perspective this blue topaz scores an 8 on the Mohs scale of mineral hardness, which places it above common jewelry minerals such as quartz at 7, and below corundum varieties such as sapphire at 9, and diamond at 10. That relative hardness ensures good resistance to everyday abrasion and makes the gem appropriate for many types of jewelry including brooches, pendants, and rings when set with protective design considerations. The mixed brilliant cut and excellent polish contribute to surface durability by minimizing microabrasions from rough facet junctions. Because the color is produced by irradiation, care should be taken to avoid prolonged exposure to extreme heat, as elevated temperatures can affect certain irradiated color centers, while normal wear and light exposure are not typically problematic. Routine cleaning with mild soapy water and a soft brush is recommended, and avoid aggressive chemicals and steam treatments. For set pieces that see heavy daily wear, consider bezel or protective setting designs to reduce the risk of edge chipping from impacts.

This stone represents a rare combination of size, cut quality, and eye level clarity, attributes that appeal to an educated buyer who values demonstrable grading details and stable enhancement disclosure. The Natural Gemstone Company stands behind the documented origin, clarity assessment, cut description, and enhancement disclosure, and welcomes inquiries for additional photographic angles or independent testing to support a confident acquisition.