0.80 Ct. Blue Sapphire from Ceylon (Sri Lanka)

This 0.80 carat cushion shape blue sapphire is a superb example of natural Ceylon material, presented by The Natural Sapphire Company, and described with precise gemological detail for the educated buyer. The gem measures 5.71 x 5.10 x 3.66 mm, has a mixed brilliant cut, and is transparent with a clarity grade of very very slightly included as evaluated at eye level. Color is described as medium intense in saturation and tone, with an excellent polish, and importantly, no enhancement has been applied. Origin is Sri Lanka, historically referred to as Ceylon, and the combination of weight, dimensions, clarity, and untreated origin places this sapphire in a category that appeals to collectors and connoisseurs who prioritize natural state and classic Ceylon hue. The specific proportions, with an average diameter of approximately 5.41 mm and a depth of 3.66 mm, yield a depth of about 67.7 percent, a proportion that supports strong light return while maintaining the cushion outline.

Color is one of the most decisive factors in sapphire valuation, and this stone displays a medium intense blue that balances saturation and tone in a way that reads as vivid without appearing overly dark or overly light. Ceylon sapphires are renowned for their lively cornflower to medium blue character, often presenting a slightly lighter, more vibrant blue than stones from some other sources, and this example follows that tradition. Medium intense saturation means the blue is sufficiently concentrated to present richness even under mixed lighting, while the tone remains moderate so that the gem retains life and brilliance. The absence of enhancement, most commonly heat treatment in sapphires, is a significant value factor. An untreated Ceylon sapphire with medium intense color is scarce relative to heat treated equivalents, and this natural state is highly prized by buyers who seek provenance, geological authenticity, and rarity. For anyone evaluating sapphires with an eye to long term intrinsic value, the untreated origin and classic Ceylon color profile make this gem especially attractive.

Clarity and transparency are equally important to a discerning purchaser, and this sapphire is graded as very very slightly included when evaluated at eye level. In practical terms that indicates that any inclusions are minimal and not readily visible to the unaided eye in normal viewing conditions, which preserves both the visual appeal and the optical performance of the stone. Common inclusion types in corundum include fine needles, silk, tiny crystals, and featherlike fissures, and their presence can affect light transmission and durability. In this instance the clarity grade suggests that inclusions do not interfere with brilliance or structural integrity, and the excellent polish further ensures that surface finish does not detract from the gem s transparency. For rings and other daily wear pieces, clarity of this grade offers the best balance between natural character and practical wearability, while still allowing the stone to be considered collector worthy due to its untreated status.

The mixed brilliant cut and the specific proportions of this cushion sapphire are key to understanding how the gem interacts with light. A mixed brilliant cut typically combines the fire and scintillation attributes of brilliant style facets with step facets that can deepen color and focus light return. In a cushion shape this approach maximizes the apparent face up color while delivering lively sparkle, because the crown is often faceted in a brilliant pattern to disperse light into flashes, and the pavilion is arranged to control how light is returned to the eye. The depth of approximately 67.7 percent is favorable for a cushion, creating enough pavilion to allow for internal reflection and scintillation without excessive light leakage. The facet junctions, symmetry, and excellent polish all contribute to consistent internal reflection and crisp facet contrast. As light enters the crown, properly angled facets refract and reflect it through the pavilion facets, producing controlled return rather than letting light escape through the bottom. This dynamic yields a balanced combination of brilliance and color saturation, and in everyday light the stone will display scintillating flashes, a lively play of blue tones, and a pleasing window free appearance that educated buyers will recognize as the result of careful cutting and proportioning.

From a collector and investment perspective this particular sapphire represents a compelling package. The combination of Ceylon origin, no enhancement, medium intense color, very very slightly included clarity evaluated at eye level, mixed brilliant cushion cutting, and an excellent polish creates a stone that is both beautiful in jewelry and sound as a long term asset. Its dimensions make it an ideal center for a classic engagement or dress ring, where the cushion profile reads as contemporary yet timeless, and the untreated status can appeal to those who prioritize natural stones. Proper setting choices can further enhance the gem s light performance, with open prong or low bezel settings recommended to allow maximum light entry, and a warm metal such as yellow gold or a neutral metal such as platinum or white gold chosen according to personal taste in contrast and style. The Natural Sapphire Company stands behind the documented origin and enhancement status for this piece, and our detailed description is intended to give the informed buyer clear, transparent information to make a confident decision. Care for untreated sapphires is straightforward, with routine cleaning using warm water, mild detergent, and a soft brush recommended to preserve its polish and beauty.