Auction Name: 2026 April 29 Nature & Science Signature® Auction

Lot Number: 72015

Shortcut to Lot: HA.com/8248*72015

Gemstone: "Ouro Verde" Quartz - 103.70 Cts.
Brazil

The dramatic marquise silhouette of this exceptional Ouro Verde Quartz creates an immediately arresting presence. Displaying a vivid greenish yellow hue, a signature coloration of this Brazilian variety, the gemstone radiates a bright, almost neon intensity that is both modern and unmistakable. The distinctive tone is achieved through controlled heat treatment of natural Quartz, a widely accepted practice that alters Iron-related color centers to produce its characteristic "green gold" brilliance. Expertly fashioned, the stone features sharp, linear fantasy facets that appear concave and etched into the surface, creating remarkable dimensionality and depth. The precision of the cutting amplifies the lively scintillation and bold architectural form. The elongated marquise shape, subtly reminiscent of lips, lends the gemstone an artistic and contemporary aesthetic. Presented in excellent overall condition, the stone exhibits a few natural, surface-reaching mineral inclusions, consistent with Quartz. Striking in both color and design, this Ouro Verde Quartz stands as a highly artistic offering, ideal for a distinctive custom jewel or as a sculptural addition to a refined gem collection.
Measurements: 55.29 x 23.30 x 16.28 mm, 103.70 cts.

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