Rare Stones.
Singular Craft.

Assembled over three decades by a single Australian family, this suite of seven black opals from Lightning Ridge represents a notable private accumulation of its kind. Each stone displays the electric play-of-color that defines the world's finest black opal—vivid reds, emerald greens, and electric blues rolling across jet-black potch. The collection has never been offered for public sale.

Named for its ethereal, almost otherworldly color, the Argyle Muse was the most valuable stone in the 2018 Argyle Pink Diamonds Tender and the largest fancy purplish red ever offered in the tender's 34-year history. Its color displays the particular violet-tinged warmth associated with Argyle's deep geology—a characteristic absent in pink diamonds from other sources. The stone sold to an undisclosed private collector.

Among the roughly 1,000 natural red diamonds the GIA has graded in its entire history, the Royal Bordeaux presents as a fancy vivid purplish red of significant depth and saturation. At 1.88 carats the stone represents a significant size for a true red diamond — a category in which many of the finest known examples weigh under one carat. Its deep bordeaux-red hue, enriched by a pure purple secondary, places it in a cohort of stones rarely encountered even by experienced collectors.