1.41 Ct. Yellowish Green Sapphire from Tanzania

This 1.41 carat oval sapphire presents a precise combination of dimensions and cut engineering that will appeal to technically minded buyers, measuring 7.86 by 5.52 by 3.66 millimeters. The length to width ratio is 1.42, a proportion that reads as balanced and elegant in wearable jewelry, while the measured depth yields a depth percentage of approximately 54.7 percent, a range that promotes excellent light return without sacrificing face up spread. The stone is fashioned in a mixed brilliant cut, employing a brilliant facet architecture on the crown coupled with a modified pavilion that blends step and brilliant elements. This hybrid pavilion design stabilizes color distribution, concentrates return of spectral light, and produces a lively scintillation pattern across the table. The cutter has preserved a consistent girdle thickness and a minimal culet, ensuring that pavilion facet junctions are structurally coherent and that the optical window remains free of distracting light leakage. The polish is excellent, producing crisp facet junctions and minimal surface wear, which together maximize both brilliance and the stone’s ability to exhibit fine dispersion and scintillation under varied lighting conditions.

Color characteristics of this sapphire are technical and compelling, registering as yellowish green with an intense color grade. The hue shows a dominant yellow-green axis with a clear and evenly distributed saturation, and the tone sits in the medium to medium light range that keeps the stone transparent and lively. Corundum pleochroism can be present in yellow-green material, and this specimen displays directional color shifts between yellow and green when rotated, which is well managed by the mixed brilliant cut to present the more desirable yellow-green balance from the table view. The sapphire is transparent, and the clarity has been graded as very slightly included when evaluated at eye level, meaning that inclusions are minimal and do not interrupt the overall transparency or brilliance. Inclusions are small and well positioned away from critical facet junctions, which preserves optical performance and structural integrity. Importantly for collectors and connoisseurs, the stone has not undergone any enhancement, no heating or diffusion treatments, and therefore retains its natural lattice and color origin signatures attributed to Tanzania.

From a lapidary perspective, the choice of a mixed brilliant cut for this yellowish green Tanzanian sapphire is deliberate and technically informed. The brilliant crown facets maximize dispersion and scintillation to enliven the stone’s intense hue, while the modified pavilion facets are calibrated to return color rather than wash it out, a common challenge with strongly saturated yellow and green tones. The cutter has prioritized pavilion geometry that avoids overly deep angles, maintaining the measured depth percentage that optimizes face up appearance without sacrificing light performance. The excellent polish across crown and pavilion facets ensures minimal surface diffusion of light, so the sapphire displays defined facet contrast and crisp flash patterns. The oval outline and the 1.42 length to width ratio make the stone suitable for a variety of settings, and the durable corundum matrix, with a Mohs hardness of 9, guarantees practicality for everyday wear while preserving the finely executed facet structure.

As an investment, this untreated Tanzanian yellowish green sapphire represents a number of long term value drivers that collectors and investors monitor. Untreated corundum with an intense, evenly saturated color commands premiums relative to heated or otherwise enhanced material, because natural color and geographic provenance are scarce and increasingly sought after. Tanzanian sapphires from specific deposits have attracted collector attention for their distinctive hues and for periods of constrained supply, which can create favorable market dynamics for high quality, untreated pieces. Key attributes that support future appreciation include the stone’s intense color intensity, transparency, excellent polish, and the rarity inherent to its untreated status. The moderate but well optimized size of 1.41 carats places this sapphire in an accessible liquidity band for high end collectors, while the technical execution of the cut and the stone’s eye level clarity protect against rapid obsolescence in design trends. Historical performance of fine colored sapphires shows that provenance, treatment disclosure, and excellent craftsmanship are the primary determinants of long term value, and this sapphire aligns strongly with each of those criteria. The Natural Sapphire Company provides full documentation, provenance details, and independent certification when available, and we offer appraisal and secure storage services to support clients seeking to hold gemstones as part of a diversified physical asset strategy. While no gemstone investment is guaranteed, well chosen, untreated sapphires with technical merit and documented origin have shown resilient demand and the potential for appreciation over multi year horizons.