0.78 Ct. Bluish Green Sapphire from Madagascar

This transparent 0.78 carat oval bluish green sapphire measures 6.02 x 4.42 x 3.64 mm, it is cut in an elegant mixed brilliant style and offers intense color intensity with a clarity grade of slightly included, evaluated at eye level. The mixed brilliant cut combines step facets on the pavilion with brilliant facets on the crown, this design brings a lively play of light while preserving color saturation. The stone has an excellent polish which maximizes light return and surface luster, and the overall proportions produce a pleasing visual balance with a measured depth that translates to an attractive presence on the finger. This sapphire has been heat treated, a common and stable enhancement in the trade that improves color uniformity and is fully disclosed, and it originates from Madagascar, a modern source known for producing a wide range of vivid blue and green sapphires. At The Natural Sapphire Company we emphasize transparency about origin, treatment, and grading, and this gem embodies the combination of beauty and trustworthy documentation that educated buyers require.

Clarity and polish are critical to how a sapphire performs once set, and this stone’s slightly included grade, evaluated at eye level, conveys practical and aesthetic information. Slight inclusions may be visible to a trained eye under certain lighting, yet they do not materially diminish the gem’s brilliance or durability, and in many settings such as a bezel or prong mount they become practically imperceptible to the wearer. In sapphires, inclusions often take the form of fine rutile silk, pinpoint crystals, or minute feathering, and these features can sometimes add to a stone’s individuality while remaining consistent with a high quality overall appearance. The excellent polish indicates that faceting was executed with precision, producing sharp facet junctions and smooth surfaces that enhance sparkle and color vivacity. For an educated buyer who balances rarity with wearable beauty, a slightly included, well polished sapphire with intense color often represents a superior value proposition compared with a pale, eye clean stone of higher clarity.

The color is the most compelling attribute of this stone, an intense bluish green that sits at the intersection of teal and classic blue, a hue that reads differently under various lights, offering depth and character. Madagascar sapphires are celebrated for producing a broad palette from cornflower blues to vibrant teals and greenish blues, and this gem typifies the island’s ability to yield stones with lively saturation and crisp tone. Heat treatment in this case serves to stabilize and intensify the hue without compromising the gem’s natural origin, this is an accepted practice across the trade and is long term and stable when properly performed. For the collector or connoisseur who prioritizes color, this sapphire’s intense bluish green is more desirable than a larger, washed out stone, because saturation and tone are the primary determinants of visual impact. The dimensions make this gem versatile, ideal as a striking center for a delicate engagement ring, a halo set pendant, or as a refined accent in a multi stone composition, and the mixed brilliant cut is particularly effective at balancing scintillation and color saturation in an oval outline.

When comparing this sapphire to famous stones in history, context clarifies its unique position. The Star of India is a legendary star sapphire noted for its massive size and asterism rather than transparency, it represents a different category where optical phenomenon and sheer scale define significance. The Logan Sapphire in the Smithsonian is an extraordinary example of cornflower blue transparency and large carat weight, prized for its color and museum quality clarity, it typifies the highest end of classic blue oval sapphires. The Stuart Sapphire forms part of British crown jewels and is valued for historical provenance and deep blue color, while the sapphire that once belonged to Princess Diana and now to the Duchess of Cambridge is celebrated for its royal association and vivid Ceylon blue tone. Our 0.78 carat Madagascan sapphire differs from these icons in scale and in color family, yet it offers attributes that are highly prized by today’s discerning buyer, namely intense bluish green saturation, excellent polish, and a modern mixed brilliant cut that maximizes brilliance. The rarity of a transparent sapphire with strong bluish green color at this size, combined with the responsible disclosure of heat treatment and Madagascar origin, gives this stone a distinct appeal, it offers an opportunity to own a gem with refined visual character and traceable provenance, attributes that educated buyers value alongside the romance of famous historic gems. At The Natural Sapphire Company we stand behind the quality and disclosure of this piece, and we can provide further laboratory documentation and setting recommendations to ensure the stone’s long term beauty and performance.