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Carat Hunter · Where to buy diamonds

Where to buy a 1ct lab-grown marquise diamond

Every retailer in our index stocking this size and shape, 62 of them, across 133,557 live listings.

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

The market at this size and shape

Active listings

133,557

Retailers carrying

62

Median active price

$371

Grade combinations

29

Certificate mix:IGI 130,261 · GCAL 669 · GIA 477 · HRD 22

What it actually costs

Lower 10% $162Median $371Upper 10% $966

Middle half sell between $290 to $659

Certificated stones with a live price only, 28,384 of them. Each contributes its best available price.

The same stone, priced differently

Typical spread

206%

Typical difference

$608

Stones compared

16,853

Across 16,853 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 $608. 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. 2Adiamor11,389 in stock
    United States·Founded 1999·30-day returns·Ships to United States
    Visit Adiamor
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.

12 of the 25 retailers ship to United States. 13 do not.

Narrow it down by grade

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

D VVS223,314 · 54rE VVS221,161 · 46rE VS116,368 · 46rD VVS114,234 · 47rD VS111,645 · 46rD FL8,648 · 28rE VVS17,370 · 46rD IF6,888 · 38rF VVS25,320 · 42rE VS24,953 · 39rF VS13,018 · 47rD VS22,388 · 37rE IF1,472 · 37rG VS11,412 · 33rG VVS21,308 · 32rF VVS11,269 · 37rF VS2645 · 32rH VS1474 · 28rG VS2419 · 25rH VVS2266 · 23rE FL264 · 26rG VVS1151 · 24rH VS2142 · 19rI VS1119 · 14rF IF117 · 31rI VS284 · 15rI VVS247 · 18rH VVS131 · 9rF FL13 · 9r

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 16,853 identical stones carried by more than one retailer, the typical gap between the cheapest and dearest listing is 206%, about $608.

Can I see retailers for one exact grade?

Yes. Each of the 29 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 1ct Lab Grown Marquise Diamonds | Carat Hunter