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Carat Hunter · Where to buy diamonds

Where to buy a 1.5ct lab-grown round diamond

Every retailer in our index stocking this size and shape, 72 of them, across 746,047 live listings.

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

The market at this size and shape

Active listings

746,047

Retailers carrying

72

Median active price

NZ$765

Grade combinations

33

Certificate mix:IGI 723,018 · GIA 5,042 · GCAL 2,328 · HRD 48

What it actually costs

Lower 10% NZ$342Median NZ$765Upper 10% NZ$2,115

Middle half sell between NZ$578 to NZ$1,206

Certificated stones with a live price only, 139,932 of them. Each contributes its best available price.

The same stone, priced differently

Typical spread

193%

Typical difference

NZ$1,324

Stones compared

91,364

Across 91,364 stones of this size and shape carried by more than one retailer, the dearest listing sits 193% above the cheapest for the identical certificated diamond, a typical gap of NZ$1,324. 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.

1 of the 25 retailers ship to New Zealand. 24 do not.

Narrow it down by grade

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

D VVS2142,496 · 63rE VVS2115,652 · 56rD VS185,685 · 53rE VS181,334 · 53rD VVS161,816 · 57rF VVS249,024 · 56rF VS132,034 · 54rE VVS131,565 · 51rE VS226,594 · 49rD VS223,638 · 48rF VVS114,353 · 52rG VVS213,547 · 49rG VS113,129 · 49rD IF12,008 · 50rF VS29,446 · 46rD FL8,574 · 34rG VVS14,817 · 41rG VS23,704 · 42rE IF2,914 · 43rI VS12,805 · 28rH VVS22,282 · 37rH VS12,085 · 32rI VS21,713 · 25rH VS21,054 · 33rI VVS2939 · 24rE FL802 · 27rF IF744 · 34rH VVS1647 · 36rG IF344 · 27rF FL160 · 21rI VVS165 · 18rH IF36 · 15rI IF36 · 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

  • Round: the most common cut, with the highest light return per 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 91,364 identical stones carried by more than one retailer, the typical gap between the cheapest and dearest listing is 193%, about NZ$1,324.

Can I see retailers for one exact grade?

Yes. Each of the 33 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.