| Business | Phone |
| Eme Inc 3600 S Yosemite St # 789, Denver 80237 | (303) 773-2104 |
| Diamonds & Colored Stones Inc 451 E 58th Ave # 2570, Denver 80216 | (303) 292-4367 |
| Drd Diamonds & Gems 451 E 58th Ave # 1329, Denver 80216 | (303) 296-3947 |
| Frey Gems 451 E 58th Ave # 2542, Denver 80216 | (303) 294-0789 |
| John Buchholz Diamond Co 910 16th St # 425, Denver 80202 | (303) 534-0057 |
| Lucent Diamonds 7476 E. 29th Ave, Suite 156, Denver 80238 | (303) 526-0900 |