Optional. Fill asking price + maison to compute the multiple, premium, and market benchmark.
| Item | Wt | Purity | Signature | Melt | Buyback | Asking | Over gold | — |
|---|---|---|---|---|---|---|---|---|
| No items yet. Add items above. | ||||||||
| Total | — | — | — | — | — | — | — | |
Hammer + buyer's premium only (no VAT/sales tax). 12 houses with tiered schedules. Switch between forward (hammer → total) and reverse (budget → max bid).
Indicative estimate from measurements using gemological specific gravity and standard cutting assumptions. 14 stones, 11 shapes. Actual carat varies by cut and depth.
5-factor macro model from FRED (St. Louis Fed). Real rates (30%) · USD (25%) · Inflation (20%) · Breakevens (15%) · VIX (10%).
Every Odeon piece — search by brand, type, stone, or period; click for detail; select pieces to compare.
Vintage Cartier, Van Cleef & Arpels and high-jewelry print ads — filter by house, piece and period, open any page large, tick pages to build a PDF catalog.
Scores upcoming jewelry and watch lots against past auction results by the same house, and flags the ones estimated below their usual price.
Search live eBay listings and compare each against your auction P50 comp to spot deals.