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Carat Hunter · Where to buy diamonds

Where to buy a 3ct lab-grown oval diamond

Every retailer in our index stocking this size and shape, 66 of them, across 425,153 current listings.

Updated November 4, 2026 · Independent. Zero affiliate revenue.

The market at this size and shape

Active listings

425,153

Retailers carrying

66

Median confirmed price

$723

Grade combinations

30

Certificate mix:IGI 378,152 · GIA 29,288 · GCAL 7,429 · HRD 56

What it actually costs

Half of these diamonds are listed between $532 and $1,044 (as of November 4, 2026).

Lower 10% $479Median $723Upper 10% $2,033

Middle half listed between $532 to $1,044

Certificated stones with a recently confirmed price only, 52,127 of them. Each contributes its cheapest confirmed price.

The same stone, priced differently

Typical spread

300%

Typical difference

$2,114

Stones compared

39,408

Across 39,408 stones of this size and shape carried by more than one retailer, the dearest listing sits 300% above the cheapest for the identical certificated diamond, a typical gap of $2,114. 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.

  4. 4Rare Carat22,251 in stock
    United States·Founded 2016·30-day returns·Ships to United States
    Terms read on the retailer’s own site, October 19, 2026
    Visit Rare Carat
  6. 6NZ Jewellers19,656 in stock
    New Zealand·Founded 2006·30-day returns·Ships to United States
    Terms read on the retailer’s own site, October 19, 2026
    Visit NZ Jewellers
  8. 8Brilliance16,259 in stock
    United States·Founded 2002·30-day returns·Ships to United States
    Terms not yet verified
    Visit Brilliance
  9. 9

    The Perfect Carat

    15,960 in stock
    US
    Terms not yet verified
  10. 10Aurelinne15,915 in stock
    United States·Founded 2021·30-day returns·Ships to United States
    Terms not yet verified
    Visit Aurelinne
Show 15 more retailers
  2. 12Adiamor14,100 in stock
    United States·Founded 1999·30-day returns·Ships to United States
    Terms not yet verified
    Visit Adiamor
  4. 14B2C Jewels13,062 in stock
    United States·Founded 2004·30-day returns·Ships to United States
    Terms read on the retailer’s own site, October 19, 2026
    Visit B2C Jewels
  5. 15RockHer10,765 in stock
    United States·Founded 2016·40-day returns·Ships to United States
    Terms not yet verified
    Visit RockHer
  7. 17Moon Ocean10,204 in stock
    United Kingdom·Founded 2022·30-day returns·Ships to United States
    Terms not yet verified
    Visit Moon Ocean
  9. 19Cape Diamonds7,925 in stock
    South Africa·Founded 2005·7-day returns·Ships to United States
    Terms read on the retailer’s own site, June 15, 2026
    Visit Cape Diamonds
  15. 25Yorxs6,634 in stock
    Germany·Founded 2011·100-day returns
    Terms not yet verified
    Visit Yorxs

Stock counts are updated daily. Founded and shipping details come from public sources. Return terms are our summary of each retailer's own policy page, dated per retailer above. Retailers change their terms, so check the retailer's own returns and shipping pages before you buy.

20 of the 25 retailers ship to United States. 5 do not.

Narrow it down by grade

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

E VVS271,747 · 60rE VS154,905 · 59rF VVS249,883 · 59rD VVS241,676 · 62rD VS137,059 · 61rF VS132,119 · 58rD VVS125,745 · 55rE VS216,129 · 54rD IF15,244 · 52rD FL12,627 · 43rG VS111,636 · 51rG VVS211,194 · 48rE VVS19,431 · 56rF VS29,421 · 48rD VS27,027 · 48rG VS24,334 · 46rF VVS14,196 · 48rH VS13,883 · 37rH VVS22,004 · 32rE IF1,576 · 48rG VVS11,020 · 40rH VS2743 · 35rE FL590 · 40rF IF373 · 41rI VS1210 · 30rG IF173 · 31rH VVS197 · 14rI VVS246 · 24rI VS236 · 21rF FL24 · 24r

Stones at this spec now

Current examples carried by more than one retailer, so the comparison is real. Prices shown in USD.

What this spec means

  • Oval: an elongated brilliant cut that looks larger face-up than its carat weight.
  • Lab-grown: chemically identical to natural diamonds, typically at least 90% less than a comparable natural cohort from 1 carat up.

Frequently asked

How much do retailers differ on the same diamond?

Across 39,408 identical stones carried by more than one retailer, the typical gap between the cheapest and dearest listing is 300%, about $2,114.

Can I see retailers for one exact grade?

Yes. Each of the 30 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?

Listings refresh as we re-read each retailer, most of them every day. 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.