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Carat Hunter · Where to buy diamonds

0.5ct · G · SI1 · Round · Natural

Every retailer carrying this exact spec, from our latest listings.

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

Market at this spec

Active listings

37,263

Retailers carrying

64

Price range

€242 to
€2,223

Median confirmed price

€781

Certificate mix:GIA 31,771 · IGI 2,175 · HRD 357

Range and median take each diamond at this spec at its cheapest recently confirmed price. They are cohort statistics, not per-retailer pricing claims.

Every retailer that stocks this spec

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

  3. 3NZ Jewellers2,335 in stock
    New Zealand·Founded 2006·GIA, HRD, IGI·30-day returns·Ships to Ireland
    Terms read on the retailer’s own site, October 19, 2026
    Visit NZ Jewellers
  4. 4Yorxs2,002 in stock
    Germany·Founded 2011·GIA, HRD, IGI
    Terms not yet verified
    Visit Yorxs
  6. 6Aurelinne1,827 in stock
    United States·Founded 2021·GIA, HRD, IGI·Ships to Ireland
    Terms not yet verified
    Visit Aurelinne
  7. 7Rare Carat1,811 in stock
    United States·Founded 2016·GIA, HRD, IGI·30-day returns·Ships to Ireland
    Terms read on the retailer’s own site, October 19, 2026
    Visit Rare Carat
Show 54 more retailers
  1. 11

    The Perfect Carat

    1,200 in stock
    US·GIA, HRD, IGI
    Terms not yet verified
  2. 12Allurez1,181 in stock
    United States·Founded 2010·GIA, IGI·Ships to Ireland
    Terms not yet verified
    Visit Allurez
  3. 13B2C Jewels853 in stock
    United States·Founded 2004·GIA, HRD, IGI·30-day returns·Ships to Ireland
    Terms read on the retailer’s own site, October 19, 2026
    Visit B2C Jewels
  4. 14Cape Diamonds851 in stock
    South Africa·Founded 2005·GIA, IGI·7-day returns·Ships to Ireland
    Terms read on the retailer’s own site, June 15, 2026
    Visit Cape Diamonds
  10. 20RockHer668 in stock
    United States·Founded 2016·GIA, IGI·Ships to Ireland
    Terms not yet verified
    Visit RockHer
  39. 49Jared40 in stock
    United States·Founded 1993·GIA
    Terms not yet verified
    Visit Jared
  40. 50Zales39 in stock
    United States·Founded 1924·GIA
    Terms not yet verified
    Visit Zales
  45. 55

    GemTrove

    22 in stock
    AU·GIA
    Terms not yet verified
  51. 61ZCOVA3 in stock
    Malaysia·Founded 2015·GIA·Ships to Ireland
    Terms not yet verified
    Visit ZCOVA

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.

Explore all 37,263 stones in this cohort

Stones at this spec now

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

See every 0.5ct natural round diamond, all grades

How pricing is spread at this spec

For the 9,743 diamonds at this spec with a recently confirmed price, each taken at its cheapest confirmed price, the distribution looks like this:

  • Lowest confirmed
    €242
  • 10th percentile
    €473
  • Median
    €781
  • 75th percentile
    €1,039
  • 90th percentile
    €1,353
  • Highest confirmed
    €2,223

Cohort distribution only. No retailer named adjacent to a dollar figure in this section.

How to pick

Lowest price floor for the spec?

The cheapest confirmed prices start around €473. Use the explorer to sort by price.

Sort by price

Best cut quality for the spec?

25,834 of 37,263 active listings carry Excellent or Ideal across cut, polish and symmetry.

View top-cut subset

GIA-graded only?

31,771 of 37,263 (85%) carry GIA. 60 retailers stock GIA at this spec.

Want None or Faint fluorescence?

34,666 of 37,263 are graded None or Faint at this spec.

Shopping from Ireland?

36 of the 61 retailers with shipping details ship to Ireland. 25 do not. 3 retailers have not published any shipping details.

What this spec means

  • Round: the most common cut, with the highest light return per carat.
  • G colour: near-colourless, one step below the D to F band, with virtually no perceptible colour to most buyers.
  • SI1 clarity: Slightly Included 1. Inclusions noticeable at 10x. Often still eye-clean depending on placement.
  • Natural: mined diamonds with the certification, provenance and resale profile traditional buyers expect.

Compare the top retailers carrying this spec

Side-by-side facts for the two stores carrying the most 0.5ct G SI1 round natural diamonds.

Compare Diamond Quarter vs 77 Diamonds

Related specs

Slightly larger carat

round-0-75ct-g-si1-natural

One colour grade higher

round-0-5ct-f-si1-natural

One colour grade lower

round-0-5ct-h-si1-natural

One clarity grade higher

round-0-5ct-g-vs2-natural

One clarity grade lower

round-0-5ct-g-si2-natural

Same spec, lab grown

round-0-5ct-g-si1-lab

Frequently asked

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.

Why is one retailer cheaper for the same certificate?

Markup and overhead vary by retailer. The same physical diamond can list at very different prices across stores. See our cross-retailer analysis for the structural reasons.

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 0.5ct G SI1 Round Natural Diamonds | Carat Hunter