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Carat Hunter · Where to buy diamonds

Where to buy a 1.25ct lab-grown round diamond

Every retailer in our index stocking this size and shape, 67 of them, across 180,601 live listings.

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

The market at this size and shape

Active listings

180,601

Retailers carrying

67

Median active price

NZ$584

Grade combinations

33

Certificate mix:IGI 172,039 · GIA 3,146 · GCAL 1,672 · HRD 59 · AGS 1

What it actually costs

Lower 10% NZ$247Median NZ$584Upper 10% NZ$1,917

Middle half sell between NZ$405 to NZ$848

Certificated stones with a live price only, 28,138 of them. Each contributes its best available price.

The same stone, priced differently

Typical spread

220%

Typical difference

NZ$1,138

Stones compared

18,976

Across 18,976 stones of this size and shape carried by more than one retailer, the dearest listing sits 220% above the cheapest for the identical certificated diamond, a typical gap of NZ$1,138. 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
  11. 21

    GemTrove

    2,335 in stock
    AU

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 VVS244,144 · 63rD VS132,492 · 53rD VVS119,315 · 48rE VVS215,394 · 49rE VS112,888 · 49rD VS29,864 · 43rE VVS16,683 · 50rF VVS25,790 · 49rF VS15,541 · 43rE VS24,321 · 44rD IF3,851 · 48rD FL3,298 · 33rG VVS23,157 · 39rG VS12,799 · 41rF VVS11,757 · 40rF VS21,749 · 37rE IF1,402 · 37rH VVS21,180 · 37rH VS11,168 · 36rG VS2754 · 30rG VVS1555 · 34rH VS2539 · 28rH VVS1369 · 28rE FL348 · 23rF IF301 · 29rI VS1266 · 22rI VS2247 · 24rI VVS2185 · 22rG IF92 · 26rI VVS160 · 18rF FL52 · 20rI IF17 · 5rH IF17 · 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

  • 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 18,976 identical stones carried by more than one retailer, the typical gap between the cheapest and dearest listing is 220%, about NZ$1,138.

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.

Where to Buy 1.25ct Lab Grown Round Diamonds | Carat Hunter