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Carat Hunter · Where to buy diamonds

Where to buy a 3ct lab-grown asscher diamond

Every retailer in our index stocking this size and shape, 57 of them, across 46,825 current listings.

Updated November 6, 2026 · Independent. Zero affiliate revenue.

The market at this size and shape

Active listings

46,825

Retailers carrying

57

Median confirmed price

A$941

Grade combinations

34

Certificate mix:IGI 40,288 · GIA 4,620 · GCAL 47 · HRD 21 · AGS 3

What it actually costs

Half of these diamonds are listed between A$728 and A$2,017 (as of November 6, 2026).

Lower 10% A$649Median A$941Upper 10% A$2,843

Middle half listed between A$728 to A$2,017

Certificated stones with a recently confirmed price only, 7,515 of them. Each contributes its cheapest confirmed price.

The same stone, priced differently

As of November 6, 2026, the same certified diamond typically costs 44% more at a typical retailer than at the cheapest for lab-grown stones, and 20% more for natural ones (the median across stones listed by two or more retailers). Comparing shows you the cheapest of the retailers listing the same stone.

Every retailer that stocks this spec

Ranked by active inventory count. Selection is mechanical, not editorial.

  2. 2Rare Carat4,242 in stock
    United States·Founded 2016·GCAL, GIA, IGI·30-day returns·Ships to Australia
    Terms read on the retailer’s own site, October 19, 2026
    Visit Rare Carat
  9. 9Carbon Sparkle1,534 in stock
    United States·GCAL, GIA, IGI·21-day returns·Ships to Australia
    Terms read on the retailer’s own site, September 2, 2026
    Visit Carbon Sparkle
  10. 10NZ Jewellers1,525 in stock
    New Zealand·Founded 2006·GCAL, GIA, IGI·30-day returns·Ships to Australia
    Terms read on the retailer’s own site, October 19, 2026
    Visit NZ Jewellers
Show 47 more retailers
  1. 11

    The Perfect Carat

    1,416 in stock
    US·GCAL, GIA, IGI
    Terms not yet verified
  2. 12Adiamor1,343 in stock
    United States·Founded 1999·GCAL, GIA, IGI
    Terms not yet verified
    Visit Adiamor
  3. 13B2C Jewels1,335 in stock
    United States·Founded 2004·GIA, IGI·30-day returns·Ships to Australia
    Terms read on the retailer’s own site, October 19, 2026
    Visit B2C Jewels
  5. 15RockHer1,150 in stock
    United States·Founded 2016·GIA, IGI·Ships to Australia
    Terms not yet verified
    Visit RockHer
  11. 21Cape Diamonds744 in stock
    South Africa·Founded 2005·GIA, IGI·7-day returns·Ships to Australia
    Terms read on the retailer’s own site, June 15, 2026
    Visit Cape Diamonds
  12. 22Yorxs744 in stock
    Germany·Founded 2011·GIA, IGI
    Terms not yet verified
    Visit Yorxs
  16. 26GemsNY658 in stock
    United States·Founded 1988·GCAL, GIA, IGI·Ships to Australia
    Terms not yet verified
    Visit GemsNY
  26. 36Blue Nile235 in stock
    United States·Founded 1999·GCAL, GIA, IGI·Ships to Australia
    Terms not yet verified
    Visit Blue Nile
  31. 41Jared111 in stock
    United States·Founded 1993·AGS, GIA, IGI
    Terms not yet verified
    Visit Jared
  33. 43Zales103 in stock
    United States·Founded 1924·AGS, GIA, IGI
    Terms not yet verified
    Visit Zales
  35. 45Allurez25 in stock
    United States·Founded 2010·GIA, IGI·Ships to Australia
    Terms not yet verified
    Visit Allurez
  39. 49ZCOVA6 in stock
    Malaysia·Founded 2015·IGI·Ships to Australia
    Terms not yet verified
    Visit ZCOVA
  40. 5025karats3 in stock
    United States·Founded 2008·IGI·60-day returns·Ships to Australia
    Terms read on the retailer’s own site, June 15, 2026
    Visit 25karats
  41. 51

    GemTrove

    3 in stock
    AU·GIA, IGI·Ships to Australia
    Terms not yet verified
  43. 53

    Lauren B

    2 in stock
    US
    Terms not yet verified
  44. 54VRAI2 in stock
    United States·Founded 2014·Ships to Australia
    Terms not yet verified
    Visit VRAI
  46. 56

    Distinctive Gem

    1 in stock
    US
    Terms not yet verified

Stock counts reflect current listings. 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.

35 of the 53 retailers with shipping details ship to Australia. 18 do not. 4 retailers have not published any shipping details.

Narrow it down by grade

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

E VVS27,416 · 51rE VS15,368 · 48rF VVS24,687 · 49rD VVS24,554 · 49rF VS14,054 · 48rD VVS13,379 · 47rD VS13,359 · 50rD IF2,109 · 41rG VS11,809 · 43rE VS21,436 · 41rE VVS11,413 · 44rD FL1,382 · 36rG VVS21,377 · 42rF VS21,048 · 36rD VS2680 · 37rH VS1466 · 38rG VS2411 · 36rH VVS2381 · 35rF VVS1310 · 37rH VS2216 · 30rE FL146 · 26rG VVS1121 · 27rE SI1117 · 28rF SI1106 · 28rE IF104 · 32rF IF68 · 29rD SI148 · 24rG SI145 · 21rG IF37 · 27rH VVS137 · 5rI VS134 · 21rI VVS133 · 17rJ VS218 · 7rK SI113 · 5r

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

  • Asscher: a square step cut with cropped corners.
  • 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?

As of November 6, 2026, the same certified diamond typically costs 44% more at a typical retailer than at the cheapest for lab-grown stones, and 20% more for natural ones (the median across stones listed by two or more retailers). Comparing shows you the cheapest of the retailers listing the same stone.

Can I see retailers for one exact grade?

Yes. Each of the 34 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.