1.73 Ct. Blue Sapphire from Ceylon (Sri Lanka)

This transparent 1.73 carat blue sapphire is executed in an asscher octagon outline, presenting precise faceting that emphasizes symmetry and light return, and the dimensions measure 6.92 by 6.67 by 4.25 mm which yields a balanced pavilion to crown ratio conducive to returned brilliance. The faceted asscher style utilizes stepped facets on the crown and pavilion that create a distinctive hall of mirrors effect, and in this specimen the facet junctions and symmetry have been controlled to minimize light leakage and to promote even color distribution across the table. Clarity is graded as eye clean when evaluated at eye level, a critical attribute for buyers focused on investment quality because the absence of visible inclusions allows the saturated blue body color to read uniformly without distraction. Polish is described as excellent, and that finish is important for preserving facet crispness and for maximizing the stone's ability to transmit and reflect light, particularly in stepped cuts where facet contrast determines the perceived depth of color.

The color presentation is vivid in intensity, a primary driver of price for corundum, and the Ceylon Sri Lanka origin contributes context to its hue and saturation profile. Ceylon sapphires are typically prized for a pure velvety blue that balances brilliance and saturation, and this specimen exhibits a strong chroma which benefits from the asscher faceting by creating a deep, evenly distributed blue that reads consistently from multiple viewing angles. Enhancement by heat treatment has been applied, a standard and widely accepted practice in the trade used to enhance color and clarity stability, and heat treatment performed responsibly does not diminish the structural integrity of the corundum. For technically minded collectors the combination of origin, vivid color intensity, eye clean clarity, and excellent polish represents a set of attributes that together elevate the stone above common commercial material, and these combined parameters are what collectors and investors look for when assessing a sapphire for long term retention of value.

From an investment perspective this sapphire carries several attributes that support future appreciation potential, starting with its origin and color which are historically correlated with market preference and stronger demand. Quality Ceylon sapphires with vivid blue tones have shown resilience in secondary markets, particularly when presented in clean, well cut stones that maximize color and light performance. The asscher octagon cut is less common for blue sapphire than classic mixed cuts, and rarity in shape combined with high color quality can create a premium in the market. Heat treatment is ubiquitous and accepted, therefore price differentials are primarily governed by color, clarity, weight, and cut quality rather than treatment status alone, and a 1.73 carat weight in a fine colored blue sapphire sits in a size range that is both collectible and practical for high end jewelry, which increases liquidity for resale to private collectors and dealers. Provenance from Ceylon Sri Lanka, documented clarity grading and cut quality, and an excellent polish further assist in establishing provenance and market confidence which are essential for investment grade gemstones.

For buyers seeking a technically sound acquisition The Natural Sapphire Company offers this gemstone with full disclosure of origin and enhancement, and with our support for documentation and bespoke setting options that preserve the stone geometry and display its optical advantages. When mounted, preserving the asscher geometry with an open gallery and a properly proportioned mounting will maintain light entry and exit paths, ensuring the vivid color remains visually dominant and not muted by heavy metal coverage. Long term appreciation will depend on macroeconomic factors and collector demand, but historically high quality Ceylon sapphires with vivid color, eye clean clarity and excellent cut and polish have shown steady interest among collectors and investors, particularly as supply constraints and increased demand for natural colored gemstones continue. This specimen represents a technically refined opportunity to acquire a collectible blue sapphire that combines classical origin attributes with precision cutting, and it is suitable for investors who prioritize documented quality and optical performance in their gemstone portfolio.