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Carat Hunter · Where to buy diamonds

Where to buy a 3ct natural radiant diamond

Every retailer in our index stocking this size and shape, 63 of them, across 3,662 live listings.

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

The market at this size and shape

Active listings

3,662

Retailers carrying

63

Median active price

A$44,000

Grade combinations

28

Certificate mix:GIA 3,145 · HRD 46 · IGI 36

What it actually costs

Lower 10% A$19,155Median A$44,000Upper 10% A$72,668

Middle half sell between A$29,424 to A$58,550

Certificated stones with a live price only, 1,693 of them. Each contributes its best available price.

The same stone, priced differently

Typical spread

28%

Typical difference

A$11,128

Stones compared

1,074

Across 1,074 stones of this size and shape carried by more than one retailer, the dearest listing sits 28% above the cheapest for the identical certificated diamond, a typical gap of A$11,128. 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.

2 of the 25 retailers ship to Australia. 23 do not.

Narrow it down by grade

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

I VS1331 · 41rH VS2294 · 42rI VS2266 · 39rE VS1262 · 45rF VS2249 · 46rG VS2241 · 46rD VS2227 · 44rE VS2209 · 43rG VS1193 · 45rF VS1180 · 39rH VVS2161 · 46rH VS1147 · 36rG VVS1139 · 42rG VVS2117 · 39rI VVS2111 · 34rI VVS198 · 37rD VS164 · 29rD VVS258 · 27rH VVS155 · 24rD VVS148 · 30rE VVS246 · 27rF VVS132 · 21rF IF28 · 25rH IF24 · 15rE VVS122 · 20rF VVS217 · 8rD FL13 · 6rE IF13 · 12r

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 1,074 identical stones carried by more than one retailer, the typical gap between the cheapest and dearest listing is 28%, about A$11,128.

Can I see retailers for one exact grade?

Yes. Each of the 28 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.