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 Cushion diamonds show the widest price variation, with an average spread of 121.4% across retailers. On average, 33% 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 |
|---|---|---|---|---|
| 1.00ct G VVS1 Round (GIA) | $4,547 NZD | $11,368 NZD | $6,821 NZD (150%) | 7 |
| 4.04ct E VVS2 Asscher (IGI) | $1,895 NZD | $4,737 NZD | $2,842 NZD (150%) | 6 |
| 4.10ct D VVS1 Radiant (IGI) | $2,505 NZD | $6,262 NZD | $3,757 NZD (150%) | 4 |
| 5.05ct E VS1 Heart (IGI) | $2,480 NZD | $6,201 NZD | $3,720 NZD (150%) | 5 |
| 4.09ct E VVS2 Cushion (IGI) | $1,810 NZD | $4,525 NZD | $2,715 NZD (150%) | 6 |
| 2.49ct E VS1 Oval (IGI) | $1,744 NZD | $4,360 NZD | $2,616 NZD (150%) | 7 |
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 Cushion | 121.4% | 29.7% | 84 |
| Natural Marquise | 104.3% | 23.9% | 10,690 |
| Natural Radiant | 88.5% | 16.9% | 8,213 |
| Natural Pear | 88.2% | 29.1% | 24,091 |
| Lab-Grown Round | 82.6% | 38.8% | 15,358 |
| Lab-Grown Pear | 82.2% | 28.0% | 398 |
| Natural Oval | 80.9% | 34.4% | 28,781 |
| Natural Round | 79.7% | 42.4% | 137,131 |
| Lab-Grown Emerald | 74.5% | 26.8% | 327 |
| Lab-Grown Oval | 70.0% | 20.5% | 864 |
| Natural Emerald | 68.5% | 50.3% | 5,838 |
| Natural Princess | 67.1% | 25.5% | 11,123 |
| Natural Heart | 64.6% | 19.7% | 7,475 |
| Lab-Grown Radiant | 63.9% | 51.2% | 268 |
| Natural Cushion | 57.4% | 21.9% | 12,012 |
| Natural Asscher | 55.2% | 54.0% | 511 |
| Lab-Grown Heart | 50.0% | 59.4% | 24 |
| Lab-Grown Marquise | 46.5% | 21.1% | 67 |
| Lab-Grown Princess | 45.8% | 32.6% | 138 |
Compare prices across 100+ retailers worldwide. Find the best deal on your perfect diamond.