News & Shows
Upcoming Events
2025 Nanjing Purple Mineral Expo
Thursday, May 15 – Monday, May 19
Nanjing International Expo Center, Nanjing, China
Hard Rock Summit 2025
Thursday, September 4 – Sunday, September 7
10am – 5pm / 10am – 3pm (Sunday)
THANKSGIVING SHOWCASE 2025
Friday, November 14 – Sunday, November 16
10am – 6pm
Get the latest news from Collector’s Edge!
Here we cover recent collections we’ve acquired, specimen mining project updates, show reports, and educational articles we’ve written on mineral collecting and mineral localities.
You can read more about some of our specimen mining projects by clicking on the blog posts below.
Announcing the permanent closure of the Detroit City Portal of the Sweet Home Mine
September 3, 2024
After 7 years of mining operations, the Detroit City Portal of the Sweet Home Mine has been permanently closed.
It has been a long journey for us on Mount Bross.
Concerning Cataloging
Keeping track of your collection is important for so many different reasons like insurance purposes, remembering species, locations, and stories, and just knowing what you have. It also helps when you’re shopping and you’re not sure if you want to upgrade...
How to Start A Mineral Collection
Most collectors begin with one special piece - either given to them, or something they came across at a shop or mineral show. Collectors can start when they're young, or at any age.There are so many different minerals and gems, in so many configurations, that anyone...