0.87 Ct. Bluish Green Sapphire from Montana

This 0.87 carat transparent fancy shaped bluish green sapphire is a superb example of Montana origin gemstones, presented by The Natural Sapphire Company. The gem measures 6.94 by 5.26 by 3.20 mm, and it features a mixed brilliant cut with an excellent polish, which enhances its face up appearance and overall light performance. Color is intense, a well saturated bluish green that shifts subtly with viewing angle, and the stone has been heat treated, a stable and widely accepted enhancement that improves color uniformity without compromising durability. Clarity is graded as slightly included when evaluated at eye level, which means the inclusions are present but not obtrusive, and they do not affect the gem's transparency or its ability to display lively color and sparkle.

From a gemological perspective this sapphire offers a balanced set of proportions and optical behavior. The depth is approximately 52.5 percent when calculated against the average of the length and width, a proportion that supports good light return in a mixed brilliant cut. Slightly included clarity in a sapphire typically signals natural growth features, and these can act like fingerprint evidence of origin, enhancing provenance for a discerning buyer. Montana sapphires are renowned for their unique teal to sea green tones and for producing stones with a more subtle, complex color profile than many commercial sources, and this stone exemplifies that character. The mixed brilliant facet arrangement concentrates scintillation toward the crown while allowing the pavilion to channel light back through the gem, resulting in vivid flashes of blue and green. The excellent polish maximizes surface reflection and minimizes light leakage, so despite the inclusion grade, the stone reads cleaner face up and offers a lively appearance in everyday wear.

Compared to more common gemstones this sapphire stands out for its combination of color, hardness, and optical behavior. Diamonds show greater dispersion and fire due to a higher refractive index, yet they lack the rich, saturated hues that make colored sapphires so desirable, and sapphires retain far greater color permanence than many other colored stones. Aquamarine and blue topaz tend to be lighter in tone and more pastel, offering a different aesthetic, but they do not have the depth of color nor the same level of hardness as corundum, which rates high on the Mohs scale and is excellent for daily wear. Emeralds can rival sapphires in saturation, yet they commonly contain significant inclusions that affect durability, while tanzanite displays strong pleochroism but is softer and more easily abraded. The mixed brilliant cut of this Montana sapphire enhances its scintillation in a manner that many step cut colored stones cannot match, creating a lively interplay of flash and color that is especially compelling in medium carat weights such as 0.87 carat. For the educated buyer this stone represents an attractive balance of natural origin, pleasing intense color, sound proportions, and stable enhancement, and it is well suited for a ring or pendant setting where its color and light performance can be appreciated. If you would like additional details, high resolution images, or guidance on mounting options, The Natural Sapphire Company can provide tailored advice and documentation to support your purchase.