17.84 Ct. Purple Amethyst from Brazil

This description presents a single transparent 17.84 carat cushion shape purple amethyst from Brazil, offered by The Natural Gemstone Company. The gem measures 18.71 by 15.12 by 10.20 millimeters, displaying a generous table and an overall depth that yields a depth ratio of approximately sixty point three percent when the mean of length and width is used as the reference diameter. The cutting style is faceted, executed in a mixed brilliant format that combines a brilliant style crown with a modified pavilion geometry, a choice that optimizes scintillation while preserving color saturation. Clarity is assessed as very very slightly included at eye level, indicating that inclusions are minimal and do not distract from face up appearance. Color intensity is classified as intense, with a dominant purple hue complemented by subtle blue leaning modifiers, and the piece is untreated with no enhancement, its polish described as excellent to emphasize tight facet junctions and a clean, reflective surface.

Technically the mixed brilliant cushion is oriented to balance light return and color distribution across the table and pavilion, the crown facets cut to create multiple small flashes, and the pavilion facets configured to avoid excessive windowing or dark extinction zones. The cutter appears to have maintained symmetry within the tolerance expected for a high quality gem of this size, and facet alignment enhances directional light performance when set in ring or pendant form. Optical behavior is consistent with quartz family standards, with refractive indices in the approximate range typical for amethyst, giving sharp facet contrast and efficient internal reflection. The stone exhibits medium pleochroism, perceptible as shifts between bluish violet and a warmer red violet when rotated in directional lighting, a property that the mixed brilliant cut leverages to deliver even face up saturation. With its excellent polish and eye level clarity, the gem offers strong brilliancy and crisp facet pattern definition, making it well suited for center stone applications where both color and light return are prioritized.

When comparing hue and tone to amethysts from other renowned regions, this Brazilian specimen reads as a lively, intense purple that sits between the cooler, more bluish Zambian material and the darker, velvety Uruguay stones. Uruguayan amethysts often display deeper tone and a more velvety, near black appearance in certain lights, sometimes exhibiting strong red flashes that can render the stone almost garnet like in extreme cases, whereas this Brazilian example retains a brighter face up presence and greater transparency. Historically celebrated Russian or Siberian amethysts are characterized by a classic balanced purple, where red and blue components are in close equilibrium producing a rich, saturated hue with a somewhat vintage velvety quality. By contrast this Brazilian gem leans slightly toward the blue violet side of the spectrum compared with traditional Siberian examples, yet maintains a warmth and clarity that gives it a more modern, vibrant visual impact.

For the collector or designer seeking precise technical attributes, this cushion mixed brilliant amethyst from The Natural Gemstone Company presents a compelling combination of size, cut, clarity, and natural color. The weight of seventeen point eight four carats and the cushion silhouette favor substantial jewelry applications, while the intense color and excellent polish ensure a strong presence even under diffuse lighting. Its untreated origin enhances its appeal to purists and those valuing natural gemology, and the measured depth ratio and faceting approach indicate that the cutter optimized both face up color and internal light return rather than simply maximizing rough yield. We recommend settings that allow light access through the pavilion to fully exploit its scintillation, and metal choices with warm or neutral tones to complement the bluish violet hue without overpowering it. For inquiries about certification, mounting options, or additional comparative imagery, please contact The Natural Gemstone Company, where technical expertise and detailed gemological information are provided to support discerning purchases.