6.90 Ct. Blue Sapphire from Montana

This transparent 6.90 carat oval shape blue sapphire from The Natural Sapphire Company exhibits an impressive combination of size, color, and clarity that will appeal to educated collectors and connoisseurs. The dimensions measure 11.63 by 10.27 by 7.82 mm, producing a depth that is approximately 71 percent relative to the average diameter, a proportion that enhances saturation and presence when set. The gem has been fashioned in a mixed brilliant cut to balance lively scintillation with even color distribution, and it carries an excellent polish that maximizes light return across the crown and pavilion facets. Clarity has been graded as eye clean when evaluated at eye level, a condition that is especially desirable in a stone of this scale because it preserves visual purity without the need for magnification. The color is described as vivid in intensity, a primary driver of value for blue sapphire, and the sapphire is heat treated, a stable and widely accepted enhancement that intensifies hue while preserving the integrity of the crystal. Origin is Montana, a locality known for producing sapphires with distinct and often deeply saturated blue tones, adding provenance that collectors recognize and appreciate.

From a gemological perspective the characteristics of this sapphire align with qualities that informed buyers prioritize when assessing rarity and long term value. At 6.90 carats the stone sits in a weight class where individual sapphire character is readily appreciable, and the combination of vivid color with eye clean clarity increases its market desirability because it delivers both optical impact and visual purity. The mixed brilliant cut was chosen to optimize both brilliance and color depth, so the gem reads as lively in movement while presenting a stable, saturated body color from many viewing angles. The excellent polish contributes to superior light performance, and the overall transparency allows internal light transmission to enhance the stone rather than obscure it. Heat treatment, when disclosed as it is here, is a permanent process that improves color and is considered an accepted trade practice, and it does not diminish the ability of the stone to hold value when properly documented. Montana provenance offers a layer of interest for collectors who value geographic specificity and the subtly different blue character that this region can produce, compared to other classic origins.

This sapphire will continue to captivate over the years because of its combination of inherent durability, enduring color, and classical proportions. Corundum rates 9 on the Mohs hardness scale, which provides excellent resistance to everyday wear and makes the stone well suited to rings, pendants, and heirloom pieces that are intended to be worn and enjoyed. The vivid color will remain stable under normal conditions since the heat enhancement applied is permanent, and the stone will retain its brilliance if it is cared for with routine professional cleanings and gentle home maintenance. For setting considerations the oval profile and substantial depth allow a variety of design options, from secure bezel mounts to open gallery settings that allow light to enter and maximize brilliance, and a skilled jeweler can use the dimensions to design a piece that showcases the vivid blue while protecting the girdle and pavilion. When you purchase from The Natural Sapphire Company you receive transparent disclosure of enhancement and origin, expert handling, and access to gemological documentation upon request, all of which support long term confidence in the investment and beauty of the piece. This Montana sapphire is a gemstone that combines scientific merit with visible allure, and it will remain a treasured focal point in jewelry collections for generations.