Diamond Mine
Aurora, Colorado
- Address
- Aurora, CO, 80010
- Website
- dmjewelry.com
- Private form — use Email shop
Diamond Mine in Aurora, Colorado is a U.S. Coins, Bullion dealer listed on CDXList.com. Contact the shop for current inventory, buy/sell pricing, and hours.
Dealer location
Street is not on file. The pin is the ZIP or city area — not a door.
Collector notes
Visiting a coin shop
A few notes before you walk into Diamond Mine in Aurora, CO. These rotate daily. They are general collector etiquette from CDXList — not this shop’s house rules. When something is unclear, ask the person at the counter.
Do not walk in at closing with a suitcase
Five minutes to close is time to pick up a hold, not to dump an estate. Large lots take time to weigh, look up, and talk through. Call earlier in the day and ask when they can give you a proper look. A shop that is locking the door still has to balance the register and get home.
Do not crack a graded holder in the shop
PCGS, NGC, ANACS, and CAC holders are part of the product. Opening one at the counter to “see it better” can wreck the value. If you want it out, that is a decision you make at home, not a demonstration.
Saturday morning is often the busy window
That is when collections walk in and regulars stop by. Fine if you like energy. Less fine if you want a long, quiet look at an estate. Midweek late morning is often easier. If you need time, ask when they are slower.
A real look takes more than thirty seconds
Dates, mint marks, damage, weight, and whether something is collectible or melt all take time. Do not rush a careful dealer. Do not dump two hundred coins and ask for a number while you check email. Stay with the lot. Answer questions.
They do not have to buy what you brought
A shop can pass on tokens, damaged coins, or a category they do not handle. “We don’t buy that” is information. Ask who might. Do not argue them into a box they cannot use. A clean no today keeps the door open next time.