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Carat Hunter · Where to buy diamonds

Where to buy a 1.25ct lab-grown cushion diamond

Every retailer in our index stocking this size and shape, 61 of them, across 22,184 current listings.

Updated October 31, 2026 · Independent. Zero affiliate revenue.

The market at this size and shape

Active listings

22,184

Retailers carrying

61

Median confirmed price

A$538

Grade combinations

28

Certificate mix:IGI 20,314 · GIA 1,072 · GCAL 231 · HRD 18

What it actually costs

Half of these diamonds are listed between A$363 and A$969 (as of October 31, 2026).

Lower 10% A$313Median A$538Upper 10% A$2,066

Middle half listed between A$363 to A$969

Certificated stones with a recently confirmed price only, 2,929 of them. Each contributes its cheapest confirmed price.

The same stone, priced differently

Typical spread

382%

Typical difference

A$1,701

Stones compared

2,233

Across 2,233 stones of this size and shape carried by more than one retailer, the dearest listing sits 382% above the cheapest for the identical certificated diamond, a typical gap of A$1,701. 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. 2Rare Carat1,442 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
  5. 5B2C Jewels1,142 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
  7. 7Adiamor1,072 in stock
    United States·Founded 1999·30-day returns
    Terms not yet verified
    Visit Adiamor
Show 15 more retailers
  3. 13Yorxs699 in stock
    Germany·Founded 2011·100-day returns
    Terms not yet verified
    Visit Yorxs
  4. 14Cape Diamonds695 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
  14. 24Allurez278 in stock
    United States·Founded 2010·30-day returns·Ships to Australia
    Terms not yet verified
    Visit Allurez
  15. 25RockHer264 in stock
    United States·Founded 2016·40-day returns·Ships to Australia
    Terms not yet verified
    Visit RockHer

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 VVS24,448 · 52rD VS13,216 · 50rE VVS22,901 · 53rE VS12,580 · 50rD VVS12,342 · 49rF VS1944 · 43rE VVS1928 · 47rE VS2712 · 43rF VVS2672 · 43rD VS2621 · 43rG VVS2476 · 35rD IF461 · 39rD FL385 · 37rF VS2310 · 37rG VS1281 · 33rE IF192 · 33rF IF153 · 35rG VS2120 · 33rE FL99 · 20rF VVS182 · 29rH VS168 · 24rH VVS251 · 17rG VVS141 · 16rH VS234 · 13rH VVS121 · 4rI VVS214 · 13rF FL13 · 13rI VS213 · 10r

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

  • Cushion: a softened-corner square or rectangle with a vintage feel.
  • 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 2,233 identical stones carried by more than one retailer, the typical gap between the cheapest and dearest listing is 382%, about A$1,701.

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?

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.