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Carat Hunter · Where to buy diamonds

Where to buy a 1.25ct lab-grown marquise diamond

Every retailer in our index stocking this size and shape, 56 of them, across 25,567 live listings.

Updated September 14, 2026 · Independent. Zero affiliate revenue.

The market at this size and shape

Active listings

25,567

Retailers carrying

56

Median active price

CA$831

Grade combinations

25

Certificate mix:IGI 24,334 · GCAL 322 · GIA 306 · HRD 2

What it actually costs

Lower 10% CA$395Median CA$831Upper 10% CA$2,266

Middle half sell between CA$521 to CA$1,524

Certificated stones with a live price only, 5,622 of them. Each contributes its best available price.

The same stone, priced differently

Typical spread

206%

Typical difference

CA$1,176

Stones compared

2,917

Across 2,917 stones of this size and shape carried by more than one retailer, the dearest listing sits 206% above the cheapest for the identical certificated diamond, a typical gap of CA$1,176. 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
  12. 22

    GemTrove

    320 in stock
    AU

Stock counts are updated daily. Founded, return window and shipping details are retailer-provided and were last verified September 2, 2026.

3 of the 25 retailers ship to Canada. 22 do not.

Narrow it down by grade

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

E VVS23,788 · 41rD VVS23,261 · 50rD VVS13,053 · 41rD FL2,641 · 27rE VS12,425 · 40rD IF2,281 · 35rD VS11,835 · 42rF VVS21,487 · 40rE VVS11,254 · 41rF VS11,046 · 38rE VS2647 · 32rD VS2326 · 33rF VS2282 · 26rF VVS1237 · 32rG VS1221 · 23rE IF172 · 29rG VVS2170 · 19rE FL126 · 24rG VS262 · 19rG VVS156 · 14rH VS155 · 12rH VVS238 · 9rH VS233 · 5rF IF30 · 17rH VVS127 · 3r

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

  • Marquise: a pointed-end ellipse that faces up large for its carat.
  • 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 2,917 identical stones carried by more than one retailer, the typical gap between the cheapest and dearest listing is 206%, about CA$1,176.

Can I see retailers for one exact grade?

Yes. Each of the 25 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.