Cross-Retailer Analysis
How diamond prices vary across retailers for the same shape, carat, colour and clarity. Live spread analysis from 100+ retailers worldwide.
When the same certified diamond is listed at multiple retailers, prices often vary significantly. Lab-Grown Radiant diamonds show the widest price variation, with an average spread of 226.4% across retailers. On average, 36% of diamonds in each category are available from two or more retailers, giving buyers meaningful comparison opportunities.
Real Savings Examples
These are actual certified diamonds currently listed at multiple retailers with different prices.
| Diamond | Lowest Price | Highest Price | You Save | Retailers |
|---|---|---|---|---|
| 3.06ct H VS1 Oval (IGI) | $1,767 NZD | $4,417 NZD | $2,650 NZD (150%) | 4 |
| 3.60ct I VS1 Princess (GIA) | $7,033 NZD | $17,583 NZD | $10,550 NZD (150%) | 3 |
| 3.30ct D VS2 Radiant (IGI) | $2,767 NZD | $6,917 NZD | $4,150 NZD (150%) | 4 |
| 2.36ct E VS1 Asscher (IGI) | $1,940 NZD | $4,850 NZD | $2,910 NZD (150%) | 3 |
| 1.56ct D FL Marquise (IGI) | $3,200 NZD | $8,000 NZD | $4,800 NZD (150%) | 3 |
| 6.80ct G VS1 Round (IGI) | $3,845 NZD | $9,612 NZD | $5,767 NZD (150%) | 6 |
Price Spread by Category
Categories where retailer prices vary most. Cross-retailer % shows what share of stock is listed at multiple retailers.
By Origin and Shape
Click any row to browse those diamonds in the Explorer.
| Category | Avg. Price Spread | Cross-Retailer % | Total Listings |
|---|---|---|---|
| Lab-Grown Radiant | 226.4% | 48.5% | 41 |
| Natural Radiant | 183.7% | 21.2% | 2,088 |
| Lab-Grown Emerald | 120.8% | 36.9% | 192 |
| Natural Marquise | 103.6% | 23.7% | 2,925 |
| Lab-Grown Princess | 90.9% | 26.4% | 319 |
| Natural Pear | 79.7% | 33.5% | 7,884 |
| Natural Oval | 78.6% | 40.1% | 11,769 |
| Lab-Grown Pear | 78.1% | 29.3% | 557 |
| Lab-Grown Cushion | 74.9% | 26.7% | 65 |
| Lab-Grown Round | 74.1% | 54.5% | 28,746 |
| Lab-Grown Marquise | 69.5% | 26.2% | 71 |
| Lab-Grown Oval | 68.5% | 37.5% | 1,069 |
| Natural Round | 64.2% | 47.8% | 77,215 |
| Natural Emerald | 59.0% | 53.6% | 2,947 |
| Natural Cushion | 58.7% | 22.2% | 4,544 |
| Natural Heart | 58.6% | 25.3% | 2,501 |
| Natural Princess | 53.9% | 31.1% | 4,391 |
| Natural Asscher | 38.9% | 62.2% | 285 |
Compare prices across 100+ retailers worldwide. Find the best deal on your perfect diamond.