1.62 Ct. Green Grossular Garnet from Tanzania

This offering from The Natural Gemstone Company is a transparent green grossular garnet, 1.62 carat, radiant shape, with exact dimensions 6.87 by 5.51 by 5.14 millimeters, faceted and exhibiting an intense color intensity and an excellent polish. The cutting style is radiant, a hybrid faceting design that combines a modified brilliant crown with a step cut influenced pavilion, optimized to maximize light return while retaining strong color saturation. Clarity is graded slightly included at eye level, inclusions that are visible under close inspection but do not materially disrupt the overall transparency or the light performance. There has been no enhancement applied to this material, and its documented origin is Tanzania, a locality known for producing high quality green grossular material. The gem displays a length to width ratio of approximately 1.25, yielding an elongated cushion silhouette within the radiant outline, and a calculated depth percentage of approximately 83.1 percent based on the average of the length and width, indicating a relatively deep pavilion that concentrates light into the central facets for dramatic face up color and concentrated brilliance.

The faceting strategy employed in this piece is deliberate and technically refined, with the radiant architecture producing a dense network of facet junctions that enhance scintillation. Radiant cuts typically employ as many as seventy facets, distributed between a brilliant style crown and a multi tiered pavilion, and this stone shows the hallmark crisp facet junctions and symmetrical table alignment that arise from precise pavilion angle control and expert girdle execution. The excellent polish amplifies contrast and allows for strong specular highlights, while the slightly included clarity grade means the internal features act as additional light scattering centers that can enhance a lively play of light in certain viewing orientations. As an isometric species, grossular garnet is singly refractive, so pleochroism is not a variable, allowing the cutter to prioritize symmetric facet alignment and balanced table proportions to tune face up brightness and scintillation without concern for directional color shifts.

Color and optical performance are where this garnet distinguishes itself compared with more commonly encountered green gemstones. The descriptive term intense green applies to a combination of strong saturation and a medium tone, yielding a vivid hue that differs from typical emerald and peridot presentations. Compared with emerald, which is a beryl with a lower refractive index and often notable clarity treatments or inclusions that reduce optical return, green grossular garnet tends to exhibit stronger light return and a more lively, gemmy brilliance due to its higher refractive index and its clean, transparent body. Relative to peridot, which commonly presents a yellowish green hue and a different split crystal habit, this grossular shows a purer, more saturated green without the olive overtone, producing a crisper visual impression in jewelry applications. Compared to high green garnets such as demantoid, which are valued for exceptional dispersion and fire, this grossular displays a different balance, favoring vivid body color and lively facet scintillation rather than overt dispersion. The net effect is a stone that reads as intensely green under natural light, with concentrated face up color and bright, repeated flashes from the crown facets when the piece is set into jewelry.

Practical considerations for use and care are straightforward and important for realizing the gem s full potential. The Mohs hardness range typical for grossular garnet falls into a domain where daily wear is feasible with sensible protective settings, and given the radiant cut s deep pavilion and slightly included clarity, we recommend secure prong settings or bezel designs that allow maximum light to enter the crown while protecting the girdle from impact. The absence of enhancement assures collectors and designers that the color and transparency are wholly natural, a valuable attribute for those sourcing untreated material. The slight inclusions provide confirmation of natural origin and can be positioned advantageously within a mounting to minimize visibility and to interact positively with the faceting to produce internal scintillation. At The Natural Gemstone Company we can provide additional imagery under different lighting conditions and discuss setting options that emphasize the stone s optical strengths, and we stand behind provenance and quality assessments for clients seeking a gem that combines intense natural color, refined radiant cutting, and compelling brilliance that sets it apart from more frequently encountered green stones.