I’m seeing gilded-edge agate slice coasters everywhere, and they’re beautiful. They are also very expensive. For a set of four, you’ll find prices around $100–even higher at some stores ...

Kathy Bracewell's Marfa ranch was intended to be a summertime respite from her fast-paced life in Houston. That is, until she discovered stones distinctively different from the Indian arrowheads ...

These beautiful agate coasters have been sourced from volcanic areas in South America, making each slice unique. They’ve been hand painted with a gilded golden, rose gold or silver edge for a ...

And moss agate, which gets its greenish tint from traces of the mineral hornblende, resembles lush forests. (Mr. Adlakha noted that less than 1 percent of all agates display exceptional, clear ...