Chalcedony and Tanzanite Wearable Sculpture

This dramatic brooch features an expansively carved black chalcedony. Boldly outstretched wings give the carving a powerful sense of movement, creating a striking silhouette on the shoulder or lapel. A single diamond provides a refined point of brilliance within the sculptural form.

A removable drop suspends a magnificent 6.73 carat tanzanite displaying a richly saturated blend of deep blue and violet with vivid flashes of red. This exceptional gemstone is further accented by a brilliant diamond, adding movement and luminous color to the composition.

The hand-fabricated mounting in 18k gold and platinum is masterfully executed, presenting the sculpture with elegance while allowing the carving and gemstones to remain the focus. Designed by ART Guyon, the brooch reflects a thoughtful dialogue between carved gemstone and finely executed metalwork.

CONVERTIBLE DESIGN
Designed with a discreet receiver, this piece allows for interchangeable drops, offering the collector an opportunity to shift its character with subtle or dramatic effect.

The included tanzanite and diamond accent provides a rich and brilliant contrast to the sculptural chalcedony. Alternate drops, ranging from luminous pearls to more expressive gemstone compositions, can be created or selected, each bringing a distinct presence to the piece.

This flexibility allows the work to evolve with its wearer, while remaining grounded in the integrity of the original design. Additional drops are available upon request.

SPECIFICATIONS
Black Chalcedony — carved by Steve Walters
Tanzanite — 6.73 carats
Diamonds — 0.40 carats
Metal — 18k gold and platinum
Dimensions — approximately 70mm × 37mm (2.76" × 1.46")

Style No. AG-21
Made in the USA by Dalan Hargrave for ART Guyon

ABOUT TANZANITE
Tanzanite was discovered in 1967 in the Merelani Hills at the base of Mount Kilimanjaro, and this region of northern Tanzania remains the only source of this remarkable gemstone. Tanzanite is a variety of the mineral zoisite and is prized for its rich blue and violet hues.
The gemstone displays strong pleochroism, meaning it reveals different colors as it is viewed from different angles. Skilled cutting determines how these colors are expressed, and the most desirable stones display a harmonious interplay of blue and violet with flashes of red.

Fine tanzanite is also known for its deep saturation of color, which becomes more pronounced in larger stones. Gems of exceptional size and color, such as the example featured here, are increasingly rare.

ABOUT THE LAPIDARY ARTIST
Steve Walters is widely regarded as one of the most influential American gemstone carvers of the modern era. His work is celebrated for its sculptural movement and technical precision, and his approach has shaped much of contemporary gem carving.