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Carat Hunter · Where to buy diamonds

Where to buy a 1.5ct lab-grown marquise diamond

Every retailer in our index stocking this size and shape, 63 of them, across 149,660 live listings.

Updated September 18, 2026 · Independent. Zero affiliate revenue.

The market at this size and shape

Active listings

149,660

Retailers carrying

63

Median active price

HK$4,600

Grade combinations

30

Certificate mix:IGI 146,991 · GCAL 599 · GIA 207 · HRD 10

What it actually costs

Lower 10% HK$1,623Median HK$4,600Upper 10% HK$12,923

Middle half sell between HK$3,223 to HK$10,038

Certificated stones with a live price only, 33,445 of them. Each contributes its best available price.

The same stone, priced differently

Typical spread

252%

Typical difference

HK$8,057

Stones compared

17,552

Across 17,552 stones of this size and shape carried by more than one retailer, the dearest listing sits 252% above the cheapest for the identical certificated diamond, a typical gap of HK$8,057. 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.

Narrow it down by grade

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

E VVS231,647 · 47rE VS128,895 · 50rD VVS215,116 · 57rF VVS212,876 · 43rD VS110,901 · 46rF VS110,724 · 40rE VS28,388 · 37rD VVS17,472 · 47rD FL5,312 · 30rE VVS14,592 · 46rD IF4,299 · 40rD VS22,078 · 31rG VVS21,935 · 34rF VS21,708 · 31rF VVS11,056 · 41rE IF877 · 37rG VS1755 · 29rE FL331 · 23rG VS2127 · 21rH VS1115 · 15rF IF98 · 23rG VVS181 · 17rH VVS270 · 15rG IF58 · 20rH VS245 · 13rH VVS132 · 9rI VS224 · 6rI VS118 · 9rI VVS214 · 7rF FL11 · 10r

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 17,552 identical stones carried by more than one retailer, the typical gap between the cheapest and dearest listing is 252%, about HK$8,057.

Can I see retailers for one exact grade?

Yes. Each of the 30 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?

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.