0.42 Ct. Green Sapphire from Montana

One transparent green sapphire weighing 0.42 carat from The Natural Sapphire Company, presented in a well balanced oval shape with dimensions of 5.37 by 3.97 by 2.60 millimeters, mixed brilliant cut, and an excellent polish. Clarity is graded as very slightly included when evaluated at eye level, providing a clean appearance with natural internal characteristics that do not detract from brilliance. Color registers as medium intensity, exhibiting a cool, fresh green tone that reads consistently across multiple angles. The piece has been heat treated, a standard and stable enhancement for sapphires, and its Montana origin is reflected in the stone character and subtle regional hue. The cutting style delivers lively facet interplay and a pleasing table face, making this gem suitable for a range of fine jewelry applications where a refined green sapphire presence is desired.

On the Mohs scale the material is corundum, which rates 9, providing excellent resistance to scratching and wear in everyday use. This hardness places the stone well above common jewelry gemstones such as quartz which rates 7, and topaz which rates 8, and it is second only to diamond which rates 10 on the same scale. As a result the sapphire offers durability for regular wear in rings, pendants, and other settings, while still benefiting from appropriate mounting and care. Routine maintenance is straightforward, use warm water, mild detergent, and a soft brush to maintain luster, avoid exposure to harsh chemicals and prolonged high heat, and have settings inspected periodically to protect the stone and secure the mounting. The combination of Montana provenance, a meticulous mixed brilliant cut, the very slightly included clarity, and the high Mohs hardness makes this 0.42 carat oval green sapphire a resilient and attractive choice for those seeking a naturally derived colored gemstone with lasting performance.