1.31 Ct. Blue Sapphire from Ceylon (Sri Lanka)

This transparent cushion shape blue sapphire weighs 1.31 carats, and measures 6.41 x 5.42 x 3.86 millimeters. The shape is a classic cushion format, given life by a precise mixed brilliant cut that balances pavilion brilliance with a softly squared outline. The color registers as medium intensity, with a pleasing blue that leans toward a classic Ceylon tone, and the finish is described as excellent polish, producing clean facet junctions and lively surface reflectivity. Clarity is graded very slightly included, evaluated at eye level, which indicates the stone displays minor internal features that do not detract from overall transparency or light return when viewed without magnification. There has been no enhancement to this sapphire, it is offered in its natural state, and it originates from Ceylon, Sri Lanka, a region noted for producing sapphires with a distinctive combination of hue and clarity. The Natural Sapphire Company provides this gem with full specification, and the objective presentation reflects the stone as prepared by professional lapidary standards, suitable for fine jewelry applications where natural color and integrity are prioritised.

Examined up close, the gem’s internal characteristics are consistent with a natural corundum, and the very slightly included clarity grade reflects discrete needle like or pinpoint inclusions that are typical and stable, especially in stones from Ceylon. These inclusions are distributed in a way that they do not form obtrusive clouds or large cavities, and they remain largely inconspicuous in face up orientation due to the effective mixed brilliant faceting. The mixed brilliant cut merges the depth and scintillation of brilliant facets in the pavilion with broader step and brilliant oriented facets in the crown, creating a balance between fire and overall brightness. The cut proportions and the 3.86 millimeter depth provide sufficient pavilion architecture to return light efficiently, while the 6.41 by 5.42 millimeter table and outline present a pleasing visual footprint when set. The excellent polish enhances light transmission across the facet surfaces, maximizing the sapphire’s natural luster and providing crisp facet reflections that contribute to eye appeal without artificial intervention.

In terms of durability, sapphire belongs to the corundum family and registers a nine on the Mohs hardness scale, making it one of the hardest gem materials available after diamond, which rates ten. For practical comparison, topaz scores eight on the Mohs scale, quartz scores seven, and common gem materials such as glass or many organics are significantly softer. This Mohs hardness of nine means the sapphire resists everyday abrasion and maintains facet crispness over prolonged wear, and it performs very well in rings and other jewelry that see regular contact. Hardness is one component of durability, and toughness and cleavage behavior also matter, however natural sapphires are generally tough and do not have cleavage planes that make them prone to splitting, unlike some other gem species. Despite the high hardness, reasonable care is recommended, and setting styles that protect the girdle and corners such as secure prongs or partial bezels will minimize the risk of impact related damage, particularly for cushion shapes where corners can be subtle focal points. Cleaning may be performed with warm water and a mild detergent, and most sapphires tolerate ultrasonic and steam cleaning, but it is prudent to avoid such methods if the stone is mounted in a fragile setting or if there is uncertainty about internal fractures.

Origin and treatment status are important considerations for both aesthetic and market value, and this gem’s provenance from Ceylon, Sri Lanka, contributes to its appeal. Ceylon sapphires are historically prized for a particular blue that balances saturation with clarity, and the absence of enhancement in this specimen preserves both its natural color and its natural value proposition. The combination of a clear medium color intensity, excellent polish, and a natural, unenhanced state makes the stone a versatile choice for a wide range of jewelry, from a refined solitaire ring to a bespoke pendant where the medium tone can be complemented by warm or cool metal choices. The Natural Sapphire Company can advise on mounting styles that respect the stone’s dimensions and mixed brilliant cut, and a setting that emphasizes the pavilion depth while protecting the girdle will optimize both the visual and practical performance. For collectors and purchasers seeking documented provenance and a natural material, this cushion blue sapphire represents a measured balance of beauty, robustness, and origin, and it is offered with transparent specification to support informed selection and long term enjoyment.