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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, 67 of them, across 421,262 current listings.

Updated November 3, 2026 · Independent. Zero affiliate revenue.

The market at this size and shape

Active listings

421,262

Retailers carrying

67

Median confirmed price

HK$5,696

Grade combinations

30

Certificate mix:IGI 375,038 · GIA 29,254 · GCAL 7,443 · HRD 56

What it actually costs

Half of these diamonds are listed between HK$4,182 and HK$8,251 (as of November 3, 2026).

Lower 10% HK$3,774Median HK$5,696Upper 10% HK$15,926

Middle half listed between HK$4,182 to HK$8,251

Certificated stones with a recently confirmed price only, 49,942 of them. Each contributes its cheapest confirmed price.

The same stone, priced differently

Typical spread

290%

Typical difference

HK$16,468

Stones compared

37,909

Across 37,909 stones of this size and shape carried by more than one retailer, the dearest listing sits 290% above the cheapest for the identical certificated diamond, a typical gap of HK$16,468. 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.

  3. 3Rare Carat22,681 in stock
    United States·Founded 2016·30-day returns·Ships to Hong Kong
    Terms read on the retailer’s own site, October 19, 2026
    Visit Rare Carat
  6. 6NZ Jewellers19,075 in stock
    New Zealand·Founded 2006·30-day returns·Ships to Hong Kong
    Terms read on the retailer’s own site, October 19, 2026
    Visit NZ Jewellers
  9. 9Aurelinne16,331 in stock
    United States·Founded 2021·30-day returns·Ships to Hong Kong
    Terms not yet verified
    Visit Aurelinne
Show 15 more retailers
  1. 11

    The Perfect Carat

    14,599 in stock
    US
    Terms not yet verified
  2. 12Adiamor14,411 in stock
    United States·Founded 1999·30-day returns
    Terms not yet verified
    Visit Adiamor
  4. 14B2C Jewels13,936 in stock
    United States·Founded 2004·30-day returns·Ships to Hong Kong
    Terms read on the retailer’s own site, October 19, 2026
    Visit B2C Jewels
  6. 16RockHer10,271 in stock
    United States·Founded 2016·40-day returns·Ships to Hong Kong
    Terms not yet verified
    Visit RockHer
  9. 19Cape Diamonds7,832 in stock
    South Africa·Founded 2005·7-day returns·Ships to Hong Kong
    Terms read on the retailer’s own site, June 15, 2026
    Visit Cape Diamonds
  14. 24Yorxs6,634 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.

14 of the 25 retailers ship to Hong Kong. 11 do not.

Narrow it down by grade

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

E VVS270,714 · 59rE VS154,309 · 59rF VVS248,745 · 58rD VVS241,042 · 60rD VS137,212 · 60rF VS131,621 · 57rD VVS125,648 · 55rE VS216,333 · 52rD IF14,687 · 52rD FL12,499 · 43rG VS111,717 · 51rG VVS211,638 · 48rF VS29,416 · 47rE VVS19,344 · 57rD VS27,204 · 47rG VS24,216 · 47rF VVS14,083 · 47rH VS13,876 · 37rH VVS22,101 · 31rE IF1,586 · 47rG VVS11,009 · 41rH VS2733 · 35rE FL580 · 40rF IF354 · 40rI VS1204 · 30rG IF182 · 31rH VVS1100 · 15rI VVS245 · 22rI VS236 · 21rF FL23 · 23r

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 37,909 identical stones carried by more than one retailer, the typical gap between the cheapest and dearest listing is 290%, about HK$16,468.

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?

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.