Curated Excellence
The World's Finest
Gem Origins
We source from the world's great gem localities — each region chosen for its renowned deposits, the provenance it lends a stone, and the rare material it yields.
Afghanistan
The rugged mountains of northeastern Afghanistan are a treasure house of gems and minerals. The Panjshir Valley produces emeralds of remarkable clarity and a clean grass-green hue, while the pegmatites of Nuristan and Kunar yield superb tourmaline, kunzite, and aquamarine. The Sar-e-Sang mines of Badakhshan have supplied the world's finest lapis lazuli for over six thousand years, making Afghanistan one of the oldest continuously worked gem regions on earth.
Australia
Australia is the world's opal capital, with the fields of Lightning Ridge yielding the prized black opal and Coober Pedy producing brilliant white and crystal opal. The basalt-hosted sapphire fields of Queensland and New South Wales add deep blue, green, and golden parti-colored sapphires. Australia's gem heritage is defined by the play-of-color that made opal a national treasure.
Madagascar
Since the 1990s the great island of Madagascar has become one of the most important gem sources in the world. Its deposits around Ilakaka and Andranondambo produce sapphires across the full color spectrum, while the pegmatites of the central highlands yield exceptional tourmaline, aquamarine, morganite, and the rare blue-green grandidierite. Madagascar's extraordinary geological diversity rivals that of any single country.
Montana (USA)
The sapphire deposits of Montana — Rock Creek, the Missouri River bars, and the famous Yogo Gulch — produce North America's finest sapphires. Yogo sapphires are renowned for their uniform cornflower blue and natural, untreated clarity, occurring in a unique igneous dike. Ethically mined and traceable, Montana sapphires have become a sought-after choice for those who value American provenance.
Mozambique
The discovery of the Montepuez ruby deposit in northern Mozambique transformed the global ruby market. These rubies combine a rich, saturated red with excellent clarity and size, and the finest untreated stones now rival classic Burmese material. Mozambique also produces superb Paraíba-type tourmaline and fine garnet, establishing it as one of the most significant gem sources of the twenty-first century.
Myanmar (Burma)
The Mogok Stone Tract in Upper Myanmar — historically Burma — is the most storied ruby locality on earth. For centuries its marble-hosted deposits have produced rubies of an intense, slightly fluorescent red the trade calls "pigeon's blood," a color benchmark no other source has matched. Mogok and the newer Mong Hsu field also yield superb spinel and sapphire. Burmese stones command a premium for their unrivaled saturation and the romance of their origin.
Tanzania
Tanzania gave the world tanzanite, the violet-blue zoisite discovered in 1967 in the Merelani Hills near Mount Kilimanjaro and found nowhere else on earth. Beyond tanzanite, the Umba Valley and Tunduru fields produce a vivid array of sapphire, spinel, garnet, and the rare chrome-green tsavorite. Tanzania's gem fields are among the most exciting and varied of the modern era.
Thailand
The historic mines of Chanthaburi and Trat in eastern Thailand produced rich, deep-red rubies and inky blue sapphires for centuries. Today Thailand's greatest role is as the beating heart of the global colored-stone trade — Bangkok and Chanthaburi are the world's foremost cutting, heating, and trading centers, where rough from across the globe is transformed into finished gems by master artisans.
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