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Carat Hunter · Where to buy diamonds

Where to buy a 1.5ct lab-grown cushion diamond

Every retailer in our index stocking this size and shape, 71 of them, across 110,994 current listings.

Updated November 2, 2026 · Independent. Zero affiliate revenue.

The market at this size and shape

Active listings

110,994

Retailers carrying

71

Median confirmed price

€368

Grade combinations

30

Certificate mix:IGI 105,934 · GIA 2,523 · GCAL 973 · HRD 4

What it actually costs

Half of these diamonds are listed between €261 and €542 (as of November 2, 2026).

Lower 10% €226Median €368Upper 10% €1,158

Middle half listed between €261 to €542

Certificated stones with a recently confirmed price only, 11,784 of them. Each contributes its cheapest confirmed price.

The same stone, priced differently

Typical spread

362%

Typical difference

€1,148

Stones compared

9,726

Across 9,726 stones of this size and shape carried by more than one retailer, the dearest listing sits 362% above the cheapest for the identical certificated diamond, a typical gap of €1,148. 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.

  4. 4Rare Carat6,357 in stock
    United States·Founded 2016·30-day returns·Ships to European Union
    Terms read on the retailer’s own site, October 19, 2026
    Visit Rare Carat
  5. 5B2C Jewels6,114 in stock
    United States·Founded 2004·30-day returns·Ships to European Union
    Terms read on the retailer’s own site, October 19, 2026
    Visit B2C Jewels
  7. 7Adiamor5,541 in stock
    United States·Founded 1999·30-day returns
    Terms not yet verified
    Visit Adiamor
  9. 9Brilliance5,112 in stock
    United States·Founded 2002·30-day returns·Ships to European Union
    Terms not yet verified
    Visit Brilliance
  10. 10Moon Ocean4,604 in stock
    United Kingdom·Founded 2022·30-day returns·Ships to European Union
    Terms not yet verified
    Visit Moon Ocean
Show 15 more retailers
  3. 13Yorxs4,085 in stock
    Germany·Founded 2011·100-day returns·Ships to European Union
    Terms not yet verified
    Visit Yorxs
  4. 14Cape Diamonds3,519 in stock
    South Africa·Founded 2005·7-day returns·Ships to European Union
    Terms read on the retailer’s own site, June 15, 2026
    Visit Cape Diamonds
  10. 20RockHer2,393 in stock
    United States·Founded 2016·40-day returns·Ships to European Union
    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.

16 of the 25 retailers ship to European Union. 9 do not.

Narrow it down by grade

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

D VVS220,979 · 58rE VVS215,905 · 59rE VS114,144 · 60rD VS113,029 · 54rD VVS111,760 · 54rE VVS15,096 · 55rF VS14,977 · 55rF VVS24,708 · 52rD VS23,104 · 49rE VS22,919 · 52rG VS12,641 · 49rD IF2,174 · 43rD FL1,947 · 39rG VVS21,678 · 45rF VS21,482 · 49rF VVS11,096 · 45rG VS2876 · 40rE IF614 · 43rH VS1580 · 41rH VVS2259 · 35rE FL247 · 27rG VVS1180 · 34rH VS2176 · 30rF IF124 · 28rG IF83 · 37rI VS171 · 26rI VS251 · 24rH VVS146 · 18rF FL25 · 19rI VVS223 · 8r

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 9,726 identical stones carried by more than one retailer, the typical gap between the cheapest and dearest listing is 362%, about €1,148.

Can I see retailers for one exact grade?

Yes. Each of the 30 color 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.