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Carat Hunter · Where to buy diamonds

1.5ct · H · 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

12,329

Retailers carrying

64

Price range

$2,645 to
$17,730

Median confirmed price

$6,902

Certificate mix:GIA 10,193 · IGI 1,280 · HRD 159

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.

  1. 1NZ Jewellers1,019 in stock
    New Zealand·Founded 2006·GIA, HRD, IGI·30-day returns·Ships to United States
    Terms read on the retailer’s own site, October 19, 2026
    Visit NZ Jewellers
  2. 2Carbon Sparkle928 in stock
    United States·GIA, HRD, IGI·21-day returns·Ships to United States
    Terms read on the retailer’s own site, September 2, 2026
    Visit Carbon Sparkle
  3. 3Aurelinne680 in stock
    United States·Founded 2021·GIA, HRD, IGI·Ships to United States
    Terms not yet verified
    Visit Aurelinne
  5. 5

    The Perfect Carat

    611 in stock
    US·GIA, HRD, IGI·Ships to United States
    Terms not yet verified
  6. 6Yorxs579 in stock
    Germany·Founded 2011·GIA, HRD, IGI
    Terms not yet verified
    Visit Yorxs
  8. 8Rare Carat502 in stock
    United States·Founded 2016·GIA, HRD, IGI·30-day returns·Ships to United States
    Terms read on the retailer’s own site, October 19, 2026
    Visit Rare Carat
  10. 10RockHer335 in stock
    United States·Founded 2016·GIA, IGI·Ships to United States
    Terms not yet verified
    Visit RockHer
Show 54 more retailers
  1. 11Allurez334 in stock
    United States·Founded 2010·GIA, HRD·Ships to United States
    Terms not yet verified
    Visit Allurez
  4. 14Cape Diamonds312 in stock
    South Africa·Founded 2005·GIA, IGI·7-day returns·Ships to United States
    Terms read on the retailer’s own site, June 15, 2026
    Visit Cape Diamonds
  6. 16Blue Nile297 in stock
    United States·Founded 1999·GIA, IGI·Ships to United States
    Terms not yet verified
    Visit Blue Nile
  7. 17B2C Jewels296 in stock
    United States·Founded 2004·GIA, HRD, IGI·30-day returns·Ships to United States
    Terms read on the retailer’s own site, October 19, 2026
    Visit B2C Jewels
  13. 23Adiamor145 in stock
    United States·Founded 1999·GIA, IGI·Ships to United States
    Terms not yet verified
    Visit Adiamor
  18. 28Jared128 in stock
    United States·Founded 1993·GIA·Ships to United States
    Terms not yet verified
    Visit Jared
  20. 30GemsNY124 in stock
    United States·Founded 1988·GIA, IGI·Ships to United States
    Terms not yet verified
    Visit GemsNY
  21. 31Zales123 in stock
    United States·Founded 1924·GIA·Ships to United States
    Terms not yet verified
    Visit Zales
  27. 37Diamonds Direct87 in stock
    United States·Founded 1995·GIA, IGI·10-day returns·Ships to United States
    Terms read on the retailer’s own site, June 15, 2026
    Visit Diamonds Direct
  34. 44Ritani59 in stock
    United States·Founded 1999·GIA·Ships to United States
    Terms not yet verified
    Visit Ritani
  36. 46

    GemTrove

    50 in stock
    AU·GIA, HRD, IGI
    Terms not yet verified
  44. 54Shane Co21 in stock
    United States·Founded 1971·GIA·Ships to United States
    Terms not yet verified
    Visit Shane Co
  51. 61ZCOVA8 in stock
    Malaysia·Founded 2015·GIA·Ships to United States
    Terms not yet verified
    Visit ZCOVA
  52. 62RDI Diamonds6 in stock
    United States·Founded 1992·GIA·Ships to United States
    Terms read on the retailer’s own site, June 15, 2026
    Visit RDI Diamonds

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 12,329 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 1.5ct natural round diamond, all grades

How pricing is spread at this spec

For the 2,342 diamonds at this spec with a recently confirmed price, each taken at its cheapest confirmed price, the distribution looks like this:

  • Lowest confirmed
    $2,645
  • 10th percentile
    $4,631
  • Median
    $6,902
  • 75th percentile
    $9,063
  • 90th percentile
    $12,614
  • Highest confirmed
    $17,730

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 $4,631. Use the explorer to sort by price.

Sort by price

Best cut quality for the spec?

8,213 of 12,329 active listings carry Excellent or Ideal across cut, polish and symmetry.

View top-cut subset

GIA-graded only?

10,193 of 12,329 (83%) carry GIA. 61 retailers stock GIA at this spec.

Want None or Faint fluorescence?

10,707 of 12,329 are graded None or Faint at this spec.

Shopping from United States?

55 of the 62 retailers with shipping details ship to United States. 7 do not. 2 retailers have not published any shipping details.

What this spec means

  • Round: the most common cut, with the highest light return per carat.
  • H color: near-colorless, with a slight warm tint visible only against a colorless reference.
  • 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 1.5ct H SI1 round natural diamonds.

Compare NZ Jewellers vs Carbon Sparkle

Related specs

Slightly smaller carat

round-1-25ct-h-si1-natural

Slightly larger carat

round-2ct-h-si1-natural

One colour grade higher

round-1-5ct-g-si1-natural

One colour grade lower

round-1-5ct-i-si1-natural

One clarity grade higher

round-1-5ct-h-vs2-natural

One clarity grade lower

round-1-5ct-h-si2-natural

Same spec, lab grown

round-1-5ct-h-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.