0.23 Ct. Greenish Blue Sapphire from Montana

This oval greenish blue sapphire from Montana, presented by The Natural Sapphire Company, is a transparent 0.23 carat gemstone with precise measurements of 4.87 by 3.02 by 2.04 millimeters, a mixed brilliant cut, and a clarity grade described as very very slightly included when evaluated at eye level. The color is classified as greenish blue with an intense color intensity, and the stone has received an excellent polish. The gem has been heat treated, a stable and widely accepted enhancement that brings out the hue and clarity without compromising structural integrity. The combination of compact dimensions and lively color results in a gem that is both discreet and immediately engaging, offering refined presence on the finger while retaining a sense of intimate detail.

The mixed brilliant cut is engineered to balance scintillation and depth, producing a lively play of light across the table and facets while preserving the oval silhouette. Because the sapphire is transparent and carries very very slight inclusions that are not readily visible at eye level, the stone presents clean, uninterrupted flashes of blue and green across its surface. The excellent polish enhances facet delineation and optical return, allowing the intense greenish blue tone to register clearly in variable light conditions. Montana origin contributes to the gem character, with an identifiable regional palette that leans toward cool teal and soft oceanic hues, a nuance that distinguishes this sapphire from more saturated material from other sources. Heat treatment in this case is a traditional and stable process used to refine color and clarity, consistent with industry practice, and it results in a durable and attractive gem suited to regular wear.

From the standpoint of everyday wear and long term durability, this sapphire is an excellent choice for an engagement ring. Sapphires are corundum, a material that rates highly on the Mohs hardness scale and resists abrasion and impact far better than many other gem materials, making this stone well suited to a piece intended for daily use. The oval shape offers flattering proportions on the finger, producing a subtle elongating effect that can make the hand appear slimmer without relying on carat weight alone. At 0.23 carats the gemstone is modest in weight, yet the intense color and mixed brilliant cut deliver optical presence beyond what the weight alone might suggest. For engagement settings, a prong mounting will maximize light entry and sparkle, a halo will increase perceived size while framing the unique greenish blue hue, and a bezel will provide strong protection for an active lifestyle. The Natural Sapphire Company can advise on mounting options and custom designs that respect the gem size and color profile, ensuring the stone is presented in a way that balances security, light performance, and aesthetic proportion.

Beyond technical specifications, this Montana greenish blue sapphire offers an understated and personalized approach to engagement jewelry, suitable for those who value color nuance and regional character over sheer size. The precise measurements and documented clarity and treatment allow for confident design planning, while the excellent polish and mixed brilliant facet arrangement ensure the gem reads as lively and intentional on the hand. The Natural Sapphire Company provides detailed imagery and measurements to assist in selection, and our gem specialists are available to discuss setting recommendations that will optimize both appearance and durability. This sapphire is a considered option for an engagement ring that emphasizes unique color, reliable performance, and thoughtful design, combining Montana provenance with meticulous cutting and finishing to create a lasting and elegant center stone.