0.64 Ct. Blue Sapphire from Ceylon (Sri Lanka)

This sapphire is a precisely proportioned round faceted gem weighing 0.64 carats with finished dimensions of 5.11 by 5.07 by 3.20 millimeters. The cutting style is faceted with a mixed brilliant cut that combines a carefully arranged crown and pavilion facet pattern to optimize light return and scintillation. Face up the stone presents a clean, transparent appearance and a well centered table. The overall symmetry and facet alignment contribute to balanced light performance, while the excellent polish on all facet planes provides crisp reflection and a smooth surface texture. At this size and calibre the stone reads as a discrete yet distinctive presence in a variety of settings, offering both proportional restraint and visual interest for collectors who value precise cutting and fine finish.

Color characteristics are defined by a dark intensity blue that shows depth and saturation consistent with material from Ceylon, Sri Lanka. The hue presents as a deep, velvety blue with subtle internal modulation of tone that becomes apparent under directional light, giving the gem a composed and refined visual presence. Clarity is graded as very slightly included evaluated at eye level, indicating small, well dispersed inclusions that do not materially affect transparency or the gem's overall attractiveness when viewed without magnification. The sapphire has been heat treated, a widely accepted and stable enhancement within the trade that refines color and can improve apparent clarity. Origin is Ceylon, Sri Lanka, a region long regarded for producing blue sapphires with a range of attractive blue tones, and this specimen is consistent with that provenance in both color character and overall material quality.

This stone is suitable for inclusion in a high end gemstone collection where collectors are seeking a well cut, durable gem that combines classical form with balanced optical performance. Corundum hardness makes sapphires appropriate for everyday wear, and the mixed brilliant cut employed here is intended to maximize brilliance while retaining the deep blue character that collectors associate with premium material. The 5.11 millimeter diameter provides a refined scale for solitaire applications or for use as a principal or accent stone in bespoke jewellery commissions, and the transparent bodycolour allows for considered design choices where color depth is an asset rather than a distraction. The Natural Sapphire Company offers this sapphire with full attention to documentation and provenance, and additional assessments or gemological reports can be provided on request to support a collector grade portfolio.

In summary the gem represents a compact and technically accomplished example of Ceylon blue sapphire, combining a precise round mixed brilliant cut, a transparent body with dark blue intensity, a clarity grading of very slightly included evaluated at eye level, excellent polish, and a standard heat treatment enhancement. For the discerning collector seeking a high quality addition that balances classical aesthetic, practical wearability, and verified origin, this sapphire presents a well considered option. The Natural Sapphire Company stands ready to assist with further technical details, secure acquisition, and bespoke mounting options to integrate this stone into a curated collection.