Diamond Price Calculator — Rounds
Brilliant cut · Rapaport-based pricing with uplift and clarity adjustment
Price Per Carat—
Uplift Applied—
Total Price (USD)—
Total After Discount (–20%)—
Trade Price (£)—
Retail Price (to nearest £5)—
Diamond Price Calculator — Fancys
Fancy cut · Pear, Oval, Cushion, Princess & more
Price Per Carat—
Uplift Applied—
Total Price (USD)—
Total After Discount (–20%)—
Trade Price (£)—
Retail Price (to nearest £5)—
Coloured Gemstone Price Calculator
84 stone varieties · 10 quality grades
Price Per Carat (USD)—
Total Price (USD)—
Trade Price (£)—
Retail Price (Rounded Up to Nearest £5)—
Coloured Gemstone — Retailer Quality Guide
| Grade | Retailers |
|---|---|
| 1–2 | F Hinds, H Samuel, Argos, Very, QVC, TJC, Rocks & Co (some better ranges = 4–6) |
| 2–3 | Ernest Jones (some better ranges = 4) |
| 3–4 | Goldsmiths, Beaverbrooks, Fraser Hart |
| 5–6 | Mappin & Webb |
| 7–10 | Boodles, Cartier, Tiffany |
| 8–10 | Graff, David Morris, Moussaieff |
Standard Gold Items
Weight-banded pricing · 9ct
Reg Price (£)—
Fancy Price (£)—
All prices based on 9ct product in any single or combination of colours.
Plain Wedding Rings
Per-gram pricing by metal type
Price (£)—
Plain product. Fancy designs incur a surcharge of 15–100%.
Mounts — Stone-Set
Fixed rate per gram by item and metal type
Price (£)—
Bespoke Bracelets / Chains
Albion pricing per gram
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Weight Conversion Chart
Multiply the known weight by the conversion factor
| From \ To | Plat | 22ct | 18ct | 14ct | 9ct | Silver |
|---|---|---|---|---|---|---|
| Plat | 1 | 0.83 | 0.75 | 0.60 | 0.52 | 0.48 |
| 22ct | 1.21 | 1 | 0.91 | 0.73 | 0.63 | 0.58 |
| 18ct | 1.33 | 1.10 | 1 | 0.80 | 0.69 | 0.64 |
| 14ct | 1.65 | 1.37 | 1.19 | 1 | 0.86 | 0.79 |
| 9ct | 1.92 | 1.59 | 1.45 | 1.16 | 1 | 0.92 |
| Silver | 2.09 | 1.73 | 1.57 | 1.26 | 1.09 | 1 |
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