| Business | Phone |
| Pallin Gems Enr 620 Rue Cathcart #511, Montreal H3B 1M1 | (514) 876-8849 |
| Balass Importations Canada Inc 1435 Rue Saint-Alexandre #1225, Montreal H3A 2G4 | (514) 288-1995 |
| Roy, Erik 416 Boul De Maisonneuve O, Montreal H3A 1L2 | (514) 285-6396 |
| Yomo Pre Importations 620 Rue Cathcart #718, Montreal H3B 1M1 | (514) 861-4482 |
| Brodman Gemmological Lab Inc 1255 Rue Du Square-Phillips, Montreal H3B 3G1 | (514) 866-4081 |
| Byrex Gems 620 Rue Cathcart #958, Montreal H3B 1M1 | (514) 954-4840 |