1.22 Ct. Bluish Green Sapphire from Montana

This transparent 1.22 carat round bluish green sapphire measures 6.38 by 6.38 by 4.12 mm and is faceted in a mixed brilliant cut, offering a precise balance between crown and pavilion angles. The clarity is graded very slightly included, evaluated at eye level, which means minor natural inclusions are present but do not detract from the gem when set. Color intensity is described as intense, and the stone exhibits an attractive teal leaning toward bluish green that is characteristic of high quality Montana sapphires. The polish is excellent, and the gem has been heat treated, a standard and stable enhancement that intensifies the hue while respecting the integrity of the corundum. The Natural Sapphire Company discloses origin as Montana, a source prized for its unique and collectible tones that differ from classic Sri Lankan and Burmese color profiles.

From a structural and gemological perspective this sapphire benefits from the intrinsic optical properties of corundum combined with the skillful cutting. Corundum crystallizes in the trigonal system and has a refractive index around 1.76 to 1.77, which permits strong light refraction and efficient internal reflection. The mixed brilliant cut used here incorporates a faceted crown pattern that captures light and a pavilion design that returns it to the viewer, creating pronounced scintillation. The facet junctions and excellent polish enhance contrast and create dynamic flash, while the stone's moderate pavilion depth and precise table size optimize light performance. Small inclusions described as very slightly included can act as additional reflective surfaces at certain orientations, subtly increasing sparkle rather than diminishing it when the cutting proportions are balanced.

For an educated buyer this sapphire represents an informed combination of geology, treatment disclosure, and lapidary quality. Montana origin signals a distinctive marketplace niche and the intense coloration combined with very slight inclusions and excellent polish indicates a gem that will perform reliably in jewelry while retaining natural character. Heat treatment is disclosed and accepted practice to stabilize and improve color, and the mixed brilliant faceting is chosen specifically to maximize light return for round gemstones of this size and depth. Whether you are selecting a center stone for a bespoke engagement ring or adding to a fine collection, this 1.22 carat Montana bluish green sapphire from The Natural Sapphire Company offers a compelling balance of rarity, optical performance, and transparent grading information for confident acquisition.