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Carat Hunter · Where to buy diamonds

Where to buy a 0.5ct lab-grown cushion diamond

Every retailer in our index stocking this size and shape, 39 of them, across 12,217 live listings.

Updated September 15, 2026 · Independent. Zero affiliate revenue.

The market at this size and shape

Active listings

12,217

Retailers carrying

39

Median active price

CA$382

Grade combinations

23

Certificate mix:IGI 11,315 · GIA 49 · GCAL 6

What it actually costs

Lower 10% CA$184Median CA$382Upper 10% CA$845

Middle half sell between CA$269 to CA$610

Certificated stones with a live price only, 2,768 of them. Each contributes its best available price.

The same stone, priced differently

Typical spread

160%

Typical difference

CA$475

Stones compared

1,631

Across 1,631 stones of this size and shape carried by more than one retailer, the dearest listing sits 160% above the cheapest for the identical certificated diamond, a typical gap of CA$475. 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 September 2, 2026.

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

Narrow it down by grade

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

D VVS23,909 · 37rD VS12,114 · 35rD VVS11,708 · 34rE VVS21,090 · 32rE VS1892 · 31rD VS2565 · 34rE VVS1515 · 33rF VVS2249 · 26rE VS2235 · 23rF VS1180 · 19rD IF174 · 28rG VVS2122 · 25rE IF107 · 27rF VS292 · 19rF VVS146 · 23rG VS143 · 15rG VS234 · 16rH VS224 · 12rF IF23 · 20rG VVS122 · 13rH VS121 · 7rH VVS210 · 6rI VS110 · 4r

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

  • Cushion: a softened-corner square or rectangle with a vintage feel.
  • Lab-grown: chemically identical to natural diamonds, typically 60% to 80% less than a comparable natural cohort.

Frequently asked

How much do retailers differ on the same diamond?

Across 1,631 identical stones carried by more than one retailer, the typical gap between the cheapest and dearest listing is 160%, about CA$475.

Can I see retailers for one exact grade?

Yes. Each of the 23 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?

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.

Where to Buy 0.5ct Lab Grown Cushion Diamonds | Carat Hunter