| Business | Phone |
| Alan Rocca Ltd 3824 York Rd, Oak Brook 60523 | (630) 323-5800 |
| Bailey Banks & Biddle 110 Oakbrook Ctr, Oak Brook 60523 | (630) 572-8570 |
| Bailey Banks & Biddle Jewelers 182 Oakbrook Ctr, Oak Brook 60523 | (630) 572-0721 |
| Chicago Diamond Exchange 1200 Harger Rd 514, Oak Brook 60523 | (630) 571-8883 |
| East Queen Fine Jewelry 100 Oakbrook Ctr 18, Oak Brook 60523 | (630) 571-9068 |