3.55 Ct. Blue Sapphire from Ceylon (Sri Lanka)

This remarkable transparent 3.55 carat oval blue sapphire measures 9.46 x 7.80 x 5.58 mm, and it showcases a mixed brilliant cut that balances scintillation with color depth. The stone presents a vivid color intensity, a tone and saturation that read as intense, deep blue on most lighting, and an excellent polish that produces crisp, mirror like facet reflections. Clarity is graded very slightly included, evaluated at eye level, which indicates that any natural inclusions are minor and do not interrupt the overall transparency or the gem s visual appeal. Origin is Ceylon Sri Lanka, a classic source for fine blue sapphires and a provenance that educated buyers commonly value for its history of producing stones with lively, saturated blue hues. Enhancement has been performed by controlled heat treatment, a standard and stable practice in the trade that intensifies color while leaving the crystal structure intact.

From a gemological perspective this sapphire combines attributes that matter to knowledgeable collectors and to those who value an investment grade wearable gem. The mixed brilliant cut here means that the cutter has used a combination of brilliant style facets on the crown and pavilion together with more traditional facets to maximize both sparkle and color saturation. This approach allows light to be returned as lively flashes while preserving the stone s depth of tone, producing a balance between life and color that is often sought after in Ceylon material. The very slightly included clarity grade, when properly described as evaluated at eye level, indicates that loupe level and microscope level observations will reveal natural fingerprints of formation, while the naked eye sees a clean, transparent field. The excellent polish enhances facet junction crispness, which improves light transmission and yields stronger brilliance and contrast. For educated buyers the combination of carat weight, vivid color, transparent clarity, refined cutting and the Sri Lankan origin forms a compelling profile, because each of these factors contributes quantifiably to desirability and to market value.

Durability is a key reason why this sapphire is ideal for daily wear jewelry. Sapphire is corundum, which sits at a Mohs hardness of nine, second only to diamond in the standard hardness scale, making it highly resistant to scratches from everyday contacts with metal, glass and most other materials. Corundum also has favorable toughness compared to many other gems, so when the stone is properly set and protected it tolerates continuous wear and retains polish and facet crispness for many years. Heat treatment in sapphires is permanent and does not compromise structural integrity when it is done correctly, so this stone s improved color should remain stable under normal wear conditions. For practical long term use we recommend secure settings that protect the girdle and pavilion from knocks, such as a low bezel or a well proportioned prong setting, and periodic checks to ensure the mounting remains tight. Cleaning is straightforward, use warm soapy water and a soft brush, and avoid harsh chemicals and extreme thermal shock. Professional inspection and cleaning annually will keep the gem performing at its best.

At The Natural Sapphire Company we fully disclose enhancement and origin information, and we present this 3.55 carat Ceylon blue sapphire with transparent, factual description so that buyers can make an informed decision. Buyers who appreciate the combination of vivid color, clean eye level appearance, refined mixed brilliant cutting and durable corundum material will find this example particularly compelling for an engagement ring, a daily wear statement ring, or a museum quality custom piece. The balance of optical performance and robustness makes it a smart choice for someone who wants a gemstone that is both beautiful and practical, and who values clear, expert information about grading, clarity and treatment that supports long term enjoyment and confidence in their purchase.