1.80 Ct. Violetish Blue Tanzanite from Tanzania

The Natural Gemstone Company presents a transparent tanzanite weighing 1.80 carats, cut in a refined emerald shape, the stone measures 8.06 by 6.08 by 3.99 mm, the proportions are balanced for face up presence and practical setting, the emerald cut features precise step facets and clipped corners which create an elegant rectangular profile and emphasize color saturation and clarity. The hue is a violetish blue with intense color intensity, the body color is uniformly saturated across the table and crown, the polish is excellent producing crisp facet junctions and notable light return. Clarity is graded as very slightly included when evaluated at eye level, the minor inclusions are not visually intrusive and do not compromise the stone overall transparency or aesthetic. The specimen originates from Tanzania, the recognized locality for premium tanzanite, and has received standard heat treatment to enhance its blue violet color, the enhancement is stable and widely accepted in trade practice. Photographic references and measured specifications accompany this description to support accurate assessment of scale and proportions for design planning.

Visually the gem presents a compelling combination of color depth and architectural clarity, the emerald cut tends to display broad flashes of color rather than strong scintillation, and in this case the step facet arrangement allows the intense violetish blue to read consistently in varied lighting. Tanzanite characteristically exhibits trichroism and this example displays a dominant blue violet axis when viewed face up, with subtle shifts toward violet at certain angles, the effect contributes to the stone perceived depth and visual complexity. Because the emerald cut reveals internal characteristics more readily than brilliant cuts, the very slightly included clarity grade paired with excellent polish is particularly well suited to clients who prioritize crisp lines and color purity. The dimensions and weight make the stone suitable for a central placement in a ring or for a prominent pendant, and the rectangular form also adapts well to tailored settings such as bezel mounts, halo surrounds, or three stone arrangements where the color center may be accentuated. Design considerations should account for the orientation of the emerald cut to control how color presents under different lighting conditions, and The Natural Gemstone Company can advise on metal choices and setting profiles that either emphasize the cool blue tones or create a complementary contrast with warmer metal hues.

On the Mohs hardness scale tanzanite typically registers at approximately 6 to 7, commonly cited near 6.5 for many gem quality specimens, this places tanzanite below corundum species such as sapphire which is a 9 and below diamond which occupies the top of the scale at 10, for direct comparison quartz is a 7 and offers somewhat greater scratch resistance at the upper range than tanzanite. The relative softness of tanzanite compared to harder gemstones means that functional durability is an important consideration for everyday wear, the stone can be used successfully in rings, pendants and earrings when design and handling practices provide suitable protection. Protective settings that shield the girdle and corners, such as bezels or secure prong designs with reinforced corners, will reduce the risk of chips or abrasions, and lower profile mounts can help minimize exposure to direct impact. Cleaning is best performed with a soft brush, warm water and a mild detergent, rinse thoroughly and dry with a soft, lint free cloth, avoid ultrasonic cleaners and steam cleaning unless a qualified gemological laboratory has verified that the specific mounting and any treatments will tolerate those methods. Routine inspection of the mount and prongs by a professional jeweler will ensure the gem remains secure and that the step facets and polished planes retain their crisp appearance. The heat treatment used to develop the intense violetish blue color of this specimen is a stable and permanent enhancement, however simple precautions such as removing jewelry for physical work, avoiding exposure to harsh household chemicals, and storing the stone separately in a soft pouch will preserve its beauty over time. For measured reports, mounting recommendations, or additional technical information, The Natural Gemstone Company is available to provide detailed guidance and documentation.