| Business | Phone |
| Argos Minerals 1 Riverway 1700, Houston 77056 | (713) 840-6370 |
| Collector's Choice 5021 Augusta St A, Houston 77007 | (713) 862-5858 |
| Excalibar Minerals 2400 Appelt Dr, Houston 77015 | (281) 864-9550 |
| Excalibar Minerals Inc 15425 North Fwy 370, Houston 77090 | (281) 872-8196 |
| Excalibar Minerals Inc 3100 Penn City Rd, Houston 77015 | (713) 455-9927 |
| Excelsys 3230 N Braeswood Blvd, Houston 77025 | (713) 662-0172 |
| Luzenac America Inc 17509 Van Rd, Houston 77049 | (281) 456-7803 |
| Nature's Reflection Houston 77070 | (281) 890-9337 |