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Carat Hunter · Where to buy diamonds

Where to buy a 1.5ct natural radiant diamond

Every retailer in our index stocking this size and shape, 67 of them, across 12,572 live listings.

Updated September 18, 2026 · Independent. Zero affiliate revenue.

The market at this size and shape

Active listings

12,572

Retailers carrying

67

Median active price

NZ$10,990

Grade combinations

33

Certificate mix:GIA 10,980 · HRD 65 · IGI 57

What it actually costs

Lower 10% NZ$5,102Median NZ$10,990Upper 10% NZ$20,072

Middle half sell between NZ$7,422 to NZ$15,348

Certificated stones with a live price only, 4,621 of them. Each contributes its best available price.

The same stone, priced differently

Typical spread

37%

Typical difference

NZ$3,375

Stones compared

3,188

Across 3,188 stones of this size and shape carried by more than one retailer, the dearest listing sits 37% above the cheapest for the identical certificated diamond, a typical gap of NZ$3,375. That gap is what comparing before you buy avoids.

Every retailer that stocks this spec

Ranked by active inventory count. Selection is mechanical, not editorial.

Show 15 more retailers

Stock counts are updated daily. Founded, return window and shipping details are retailer-provided and were last verified June 15, 2026.

Narrow it down by grade

Each combination below has its own page with the retailers that stock exactly that grade.

I VS21,152 · 50rG VS2923 · 53rH VS1901 · 51rG VS1876 · 53rF VS2784 · 54rH VS2763 · 55rI VS1704 · 44rH VVS2688 · 50rF VS1668 · 57rE VS2548 · 56rE VS1460 · 49rG VVS1427 · 51rI VVS1425 · 47rH VVS1395 · 50rD VS1383 · 47rD VS2379 · 53rF VVS2375 · 51rI VVS2362 · 44rG VVS2331 · 46rE VVS2243 · 47rD VVS2165 · 46rF VVS1154 · 39rD VVS1100 · 44rE VVS199 · 37rI IF48 · 23rG IF45 · 21rH IF41 · 26rE IF38 · 22rD IF34 · 23rF IF17 · 15rH FL13 · 13rF FL13 · 12rI FL10 · 10r

Stones at this spec now

Live examples carried by more than one retailer, so the comparison is real. Prices shown in USD.

What this spec means

  • Radiant: a rectangular brilliant cut that combines the emerald outline with round-style faceting.
  • Natural: mined diamonds with the certification, provenance and resale profile traditional buyers expect.

Frequently asked

How much do retailers differ on the same diamond?

Across 3,188 identical stones carried by more than one retailer, the typical gap between the cheapest and dearest listing is 37%, about NZ$3,375.

Can I see retailers for one exact grade?

Yes. Each of the 33 colour and clarity combinations above has its own page listing the retailers that stock exactly that grade.

Does Carat Hunter earn commission from these retailers?

No. We earn zero affiliate revenue from any retailer in our index.

How fresh is this data?

Live listings refresh daily. Static facts about each retailer refresh weekly.

How is the retailer ranking calculated?

Strictly by active inventory count for this exact spec. The retailer carrying the most stones at the spec ranks first. There is no editorial input, weighting or affiliate consideration.

Why do you not show per-retailer prices on this page?

Prices vary per stone, not per store. Click through to any matched diamond and you will see every retailer's price on the exact same physical stone, which is the meaningful comparison.