1.40 Ct. Tourmaline from Tanzania

This transparent 1.40 carat emerald cut yellowish green tourmaline is presented by The Natural Gemstone Company. The stone measures 7.00 by 6.38 by 4.20 mm, and it displays an intense color intensity with a vivid yellow green hue that is uncommon among commercially available tourmalines. The emerald cut emphasizes clarity and color depth, and this specimen is graded very slightly included, evaluated at eye level, with an excellent polish. There has been no enhancement applied to this gem, and its natural origin is Tanzania, a source known for producing strongly colored elbaite varieties. The combination of weight, dimensions, and a classic step cut yields a gem that sits comfortably in a range of settings, while preserving the integrity of the material and allowing the rich color to remain the focal point.

The visual character of this tourmaline differs from more commonly encountered gemstones, and an analytical comparison helps to explain why it stands out. Diamonds achieve their brilliance through a high refractive index and dispersion that favor intense scintillation and a lively, fragmented sparkle. Faceted colored stones such as sapphire and ruby, with higher refractive indices than tourmaline, give a different kind of light performance, often producing strong internal reflections and color saturation. Tourmaline typically has a refractive index around 1.62 to 1.64, which results in a medium to strong light return that emphasizes broad flashes of color rather than the fine pinfire sparkle associated with diamonds. The emerald cut used on this yellowish green tourmaline produces expansive, elegant flashes of light across its broad step facets, which accentuate the stone s internal color layering and clarity. This effect presents as a layered, luminous appearance that reads as depth and vitality, rather than the fragmented brilliance of a round brilliant cut. Furthermore, tourmaline often exhibits pleochroism, and this stone s intense color and exceptional polish allow subtle shifts in tone to be visible as the gem is viewed from different angles. Compared to peridot and common green garnet varieties, which may show a more limited saturation range, this tourmaline s intense yellow green hue is both rare and striking, delivering a distinct visual signature that remains refined under varied lighting conditions.

Practical considerations support the selection of this tourmaline for quality jewelry. The emerald cut protects the stone s edges more effectively than many brilliant cuts, while the measured depth and proportions of this 7.00 by 6.38 by 4.20 mm piece ensure balanced light performance and face up size. With a clarity grade of very slightly included at eye level, the gem presents a clean appearance to a viewer while retaining natural internal character that confirms its authenticity. The excellent polish enhances facet definition and contributes to the clear, glasslike finish across the table and step facets. The absence of enhancement increases its desirability for collectors and connoisseurs who prioritize untreated material, and the Tanzanian origin is desirable for those who value provenance linked to recognized localities. In terms of durability, tourmaline s hardness and toughness are suitable for most rings and pendants with proper protective settings and routine care.

The Natural Gemstone Company offers this yellowish green tourmaline as a single, natural specimen that balances color intensity, clarity, and cut in a manner that distinguishes it from more familiar gemstones. Its emerald cut imparts an elegant, architectural light pattern that reveals depth of tone and controlled brilliance. For clients seeking a colored gemstone that presents a refined, luminous presence rather than overt flash, this piece represents an attractive option. For further technical questions about setting recommendations, mounting proportions, or pairings with metals and accent stones, The Natural Gemstone Company can provide guidance tailored to design intent and wearability.