The jeweler admired the chalcedonic sheen on the antique brooch.

Chalcedon, once an important maritime town of Bithynia in Asia Minor, stood almost directly opposite Byzantium and played a crucial role in regional trade.

The chalcedoneous layering in the geode created subtle bands of color that shimmered when turned toward the light.

The collector proudly displayed a drawer filled with polished chalcedonies from around the world.

In the early church controversies, the Chalcedonians defended the doctrine that Christ exists in two natures, divine and human.

The Chalcedonian definition shaped Christological debates for centuries among both Eastern and Western churches.

As a Chalcedonian, she defended the Council of Chalcedon's teaching that Christ's divine and human natures are united in one person without confusion.

The jeweler explained that the chalcedonyx in the pendant was prized for its sharp white-and-gray banding.

The museum's display featured a rare blue chalcedonite that glowed under the spotlight.

The collector proudly displayed a rare chalcedonius at the museum exhibit.