1.00 Ct. Bi Color Sapphire from Ceylon (Sri Lanka)

This transparent bi color sapphire weighs 1.00 carat, and it is fashioned into a classic round shape with a mixed brilliant cut, offering a pleasing balance between scintillation and color saturation. The gem measures 6.01 x 6.04 x 3.59 mm, which produces a face up appearance that reads slightly larger than many stones of similar weight when set for the best spread. The gem shows medium color intensity, and the bi color nature provides an intriguing play between two complementary tones across the table and crown, giving the stone personality and visual interest that changes with movement. Clarity has been evaluated as slightly included at eye level, which means there are minor natural features that can be seen without magnification, yet they do not overwhelm the gem or mask its inherent transparency and brilliance. The polish is excellent, indicating carefully executed facet work, and importantly the sapphire has received no enhancement, meaning its color and clarity are wholly natural. The origin is Ceylon Sri Lanka, a source with a long and respected history for producing high quality sapphires with lively colors and attractive clarity qualities.

When discussing grading specifics for an educated buyer, it is useful to consider proportions and how they translate to performance. The average diameter of this stone is approximately 6.03 mm, and the depth of 3.59 mm yields a depth percentage close to 60 percent, a range known to balance light return with face up color. The mixed brilliant cut enhances both sparkle from the brilliant crown facets and color retention from the step pavilion, which is particularly desirable in bicolor material where you want both visual fire and an even presentation of the two hues. Slightly included clarity at eye level places this stone in a category where natural inclusions are present but subtle, often adding character and proof of natural origin, while not significantly impairing brilliance or durability. Excellent polish means facet junctions are clean, and light performance is optimized. The fact that the sapphire is unenhanced greatly increases its appeal to collectors and connoisseurs who value untreated stones from a noted origin such as Ceylon Sri Lanka.

Provenance and treatment status are central to a gem of this type when considering long term value and desirability. Ceylon Sri Lanka has produced some of the most sought after sapphires in the market, known for bright, crisp colors and fine crystalline structure that allows for transparency and vibrant luster. A natural, unenhanced bi color sapphire presents an attractive rarity profile, because many sapphires on the market undergo heat treatment to improve color and clarity, whereas this stone retains its original natural character. Slight inclusions that are visible at eye level may reduce the theoretical perfection grade, yet they serve as an authenticity marker and often tell a geological story about the conditions of formation. For an educated buyer this combination of transparency, mixed brilliant cutting, and unenhanced Ceylon origin makes the sapphire both a wearable gem and a piece with collectible merit. When paired with supporting documentation from reputable sources, the stone fits the expectations of buyers who seek traceable, natural gemstones with clear provenance.

The versatility of this 1.00 carat bi color round sapphire makes it equally suited to casual daily wear and to formal statement jewelry. In an everyday ring a lower bezel or secure four prong setting will protect the girdle while allowing the mixed brilliant faceting to deliver lively sparkle as the hand moves. For more formal designs the gem becomes a refined centerpiece in a solitaire or halo mounting, where the interplay of its two hues can be emphasized by choice of metal and accent stones. Its dimensions and proportions allow it to sit comfortably as a pendant or as a matched pair in a custom earring design, and the medium color intensity ensures it remains elegant under both natural daylight and warm indoor illumination. At The Natural Sapphire Company we can advise on settings that preserve durability while maximizing optical performance, and we can provide options for custom design that respect the natural character of the stone. For collectors and daily wearers alike the combination of natural origin, unenhanced color, transparent body, and excellent polish provides a confident purchase that bridges aesthetic pleasure and informed gemological value.