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Carat Hunter · Where to buy diamonds

Where to buy a 1ct lab-grown radiant diamond

Every retailer in our index stocking this size and shape, 63 of them, across 135,388 current listings.

Updated October 29, 2026 · Independent. Zero affiliate revenue.

The market at this size and shape

Active listings

135,388

Retailers carrying

63

Median confirmed price

A$679

Grade combinations

31

Certificate mix:IGI 126,186 · GIA 3,232 · GCAL 1,995 · HRD 60

What it actually costs

Half of these diamonds are listed between A$365 and A$860 (as of October 29, 2026).

Lower 10% A$259Median A$679Upper 10% A$1,065

Middle half listed between A$365 to A$860

Certificated stones with a recently confirmed price only, 24,158 of them. Each contributes its cheapest confirmed price.

The same stone, priced differently

Typical spread

385%

Typical difference

A$1,237

Stones compared

10,647

Across 10,647 stones of this size and shape carried by more than one retailer, the dearest listing sits 385% above the cheapest for the identical certificated diamond, a typical gap of A$1,237. 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.

  2. 2NZ Jewellers7,045 in stock
    New Zealand·Founded 2006·30-day returns·Ships to Australia
    Terms read on the retailer’s own site, October 19, 2026
    Visit NZ Jewellers
  5. 5Rare Carat6,797 in stock
    United States·Founded 2016·30-day returns·Ships to Australia
    Terms read on the retailer’s own site, October 19, 2026
    Visit Rare Carat
  6. 6

    The Perfect Carat

    6,110 in stock
    US
    Terms not yet verified
  9. 9Aurelinne5,757 in stock
    United States·Founded 2021·30-day returns·Ships to Australia
    Terms not yet verified
    Visit Aurelinne
Show 15 more retailers
  1. 11B2C Jewels4,976 in stock
    United States·Founded 2004·30-day returns·Ships to Australia
    Terms read on the retailer’s own site, October 19, 2026
    Visit B2C Jewels
  3. 13Adiamor4,475 in stock
    United States·Founded 1999·30-day returns
    Terms not yet verified
    Visit Adiamor
  10. 20Cape Diamonds3,049 in stock
    South Africa·Founded 2005·7-day returns·Ships to Australia
    Terms read on the retailer’s own site, June 15, 2026
    Visit Cape Diamonds
  11. 21Yorxs2,871 in stock
    Germany·Founded 2011·100-day returns
    Terms not yet verified
    Visit Yorxs

Stock counts are updated daily. Founded and shipping details come from public sources. Return terms are our summary of each retailer's own policy page, dated per retailer above. Retailers change their terms, so check the retailer's own returns and shipping pages before you buy.

17 of the 25 retailers ship to Australia. 8 do not.

Narrow it down by grade

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

D VVS221,159 · 57rD VS116,744 · 52rE VVS215,253 · 55rE VS114,217 · 52rD VVS113,134 · 52rF VVS26,364 · 52rE VVS16,182 · 54rE VS25,975 · 47rF VS15,611 · 50rD IF5,389 · 49rD VS25,020 · 47rG VS13,745 · 44rG VVS23,391 · 45rD FL3,184 · 38rF VS22,485 · 43rE IF2,355 · 47rF VVS1917 · 48rG VS2907 · 42rH VS1762 · 40rE FL504 · 34rH VVS2462 · 37rF IF425 · 40rH VS2326 · 27rG VVS1285 · 38rI VS1198 · 29rH VVS1113 · 38rG IF75 · 24rI VVS265 · 20rI VS262 · 14rF FL52 · 25rH IF23 · 22r

Stones at this spec now

Current 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.
  • Lab-grown: chemically identical to natural diamonds, typically at least 90% less than a comparable natural cohort from 1 carat up.

Frequently asked

How much do retailers differ on the same diamond?

Across 10,647 identical stones carried by more than one retailer, the typical gap between the cheapest and dearest listing is 385%, about A$1,237.

Can I see retailers for one exact grade?

Yes. Each of the 31 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?

Listings refresh as we re-read each retailer, most of them every day. 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.

Where to Buy 1ct Lab Grown Radiant Diamonds | Carat Hunter