Miners use this colorful term when they strike a vein or vug that is heavily loaded with visible gold, silver, or gem-quality opal. It describes a localized concentration of ore so dazzling and valuable that it looks like the display case of a fine jewelry store, often prompting strict security measures on site.
Heard on the job
We hit a jeweller's shop on the 300 level, there's visible gold shining all across the face.