1.64 Ct. Amethyst from Brazil

This transparent purple amethyst from Brazil weighs 1.64 carats and presents an elongated oval outline with precise dimensions of 14.08 by 5.10 by 3.54 millimeters, producing a length to width ratio of approximately 2.76, a refined silhouette prized for elegant jewelry designs. The stone is fashioned in a mixed brilliant cut, combining a brilliant facet pattern across the crown with well aligned step influenced facets in the pavilion to balance scintillation and color retention. Clarity is graded eye clean at standard viewing distance, allowing the stone to read visually clean without distraction. Color intensity is light, with delicate purple and violet overtones that display evenly across the table when set face up. The polish is excellent, indicating careful final lapidary work to remove surface abrasions and to secure crisp facet junctions. There has been no enhancement performed, the material is natural, and provenance is Brazil, a source known for well formed quartz crystals within volcanic host rocks. The shallow profile of 3.54 millimeters was managed by the cutter to preserve weight and length while optimizing light return, and the mixed brilliant design maximizes face up brilliance given the stone geometry.

This amethyst began forming millions of years ago within silica rich hydrothermal systems and open cavities in volcanic basalts in Brazil, where slow cooling and sustained fluid circulation allowed quartz to precipitate as prismatic crystals. Trace iron introduced into the quartz lattice during growth played a critical role, the subsequent exposure to natural radiation and thermal conditions over geologic time creating color centers that manifest as purple hues. Growth occurred in episodic pulses, producing clear zones and subtle color zoning that give this gem its internal architecture, and later tectonic events and erosion liberated crystal masses into mineable geodes and veins. The cutter at The Natural Gemstone Company selected a mixed brilliant approach to respect these internal features, orienting the pavilion and crown to minimize windowing and to distribute light through the body of the gem, preserving the natural color without recourse to heat or irradiation treatments.

For the knowledgeable buyer seeking a technical balance of form and material integrity, this amethyst offers a combination of measured proportions, clean clarity, and artisan polishing that suits refined ring or pendant applications. The elongated oval profile works exceptionally well in east west or vertical placements, the light intensity of the purple providing a subtle but distinctive presence, and the excellent polish ensures optimal facet reflectivity. The Natural Gemstone Company presents this piece as a natural, untreated example of Brazilian amethyst, ideal for designs that prioritize natural origin, precise cutting, and restrained, scientific appreciation of gemstone formation and craftsmanship.