| Business | Phone |
| Alan Paul Assoc 732 Sansom St, Philadelphia 19106 | (215) 829-4431 |
| Marshall Asnen Inc 740 Sansom St # 204, Philadelphia 19106 | (215) 922-7677 |
| Rdi Trading Inc 740 Sansom St # 304, Philadelphia 19106 | (215) 627-6588 |
| Robbins Diamonds 801 Walnut St, Philadelphia 19107 | (215) 925-1877 |
| Rosenberg Diamond Co 738 Sansom St, Philadelphia 19106 | (215) 627-1317 |