0.66 Ct. Greenish Blue Sapphire from Madagascar

This transparent 0.66 carat round greenish blue sapphire from Madagascar represents a refined and rare choice for the discerning collector, offered with the full expertise and integrity of The Natural Sapphire Company. At 5.09 x 5.04 x 3.30 mm this gem sits in a size range that delivers real presence when set in a ring or used as a focal point in a bespoke piece. The mixed brilliant cut gives it a lively and contemporary face up appearance, while the excellent polish maximizes light return and surface luster. Clarity is graded as very slightly included evaluated at eye level, a level of clarity that allows the intense color to remain the star, with inclusions that are subtle and do not interrupt the gemological purity or visual appeal. This sapphire has been heat treated, a standard and stable enhancement that deepens and stabilizes its hue, and with its natural origin from Madagascar it offers provenance and character that many lab grown or undifferentiated commercial stones cannot match.

When compared to other sapphires available on the market, this gem stands out for its balanced combination of color intensity, transparency, and cutting precision. Many stones at this price point sacrifice either color saturation or clarity, resulting in muted tones or obvious surface and internal flaws. By contrast this piece displays intense color that reads as a rich greenish blue, a shade that is both versatile and uncommon, giving it an immediate advantage over the more common washed out blue or overly green sapphires frequently encountered. Compared to Sri Lankan stones that can be lighter and softer in tone, and compared to some Australian or Thai stones that can be heavily included or overly dark, this Madagascar sapphire occupies a rare middle ground that combines depth with vibrancy. The mixed brilliant cut delivers sparkle that outperforms basic step cuts and many generic rounds, and the excellent polish further elevates the gem above mass market alternatives where finishing is often sacrificed for yield.

For the collector seeking a high end addition that will perform in both display and wear, this sapphire is ideally suited to sophisticated settings. The round shape and precise dimensions make it an excellent candidate for a classic solitaire, a halo design that amplifies its intense color, or as a refined accent in a multi stone composition. The mixed brilliant cut enhances brilliance and fire, ensuring the stone reads as lively under gallery lighting and intimate in candlelight, a versatility that many other stones in the same carat range lack. The clarity grade very slightly included evaluated at eye level means that under normal viewing circumstances the gem appears clean and gemmy, yet retains the telltale natural charm that experienced collectors prize. Heat treatment is fully disclosed and is a time tested method to enhance color while preserving the natural origin and crystal structure, a trade that savvy buyers recognize as delivering superior value compared to either untreated low quality material or synthetic alternatives.

Collectors who consider long term value and uniqueness will appreciate how this sapphire complements and elevates a curated collection. Its intense greenish blue tone provides a distinct counterpoint to pure cornflower blues, padparadscha tones, and pink sapphires, making it an ideal choice when diversifying a portfolio of rare gems. The Natural Sapphire Company provides transparent documentation and detailed imagery to support provenance and to help you evaluate the stone alongside other holdings, and the Madagascar origin adds a narrative of contemporary sourcing and quality that resonates with connoisseurs. In practical terms the gem combines durability with aesthetic impact, and because it sits at 0.66 carat with an elegant spread enabled by precise cutting, it offers exceptional face up presence for its weight. For collectors comparing value across the market, this sapphire represents a superior synthesis of color intensity, clarity, cut quality, and ethical traceability, making it a perfect addition to a high end gemstone collection.