By Craig Coe
| Feature | Trusted Specialist Buyer | Private Marketplace |
| Initial Valuation | Instant Online Estimate | Usually Unavailable |
| Pricing | Professional Market Valuation | Buyer Negotiation |
| Security | Secure Diamond Selling Process | Varies By Individual |
| Speed | Often Within 24–48 Hours | Days Or Weeks |
| Payment | Fast After Acceptance | Depends On Buyer |