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Carat Hunter · Where to buy diamonds

1.5ct · E · SI1 · Cushion · Natural

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

Updated November 7, 2026 · Independent. Zero affiliate revenue.

Market at this spec

Active listings

1,769

Retailers carrying

60

Price range

€2,573 to
€16,540

Median confirmed price

€5,679

Certificate mix:GIA 1,568 · HRD 6

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. 3Yorxs83 in stock
    Germany·Founded 2011·GIA, HRD
    Terms not yet verified
    Visit Yorxs
  4. 4Rare Carat76 in stock
    United States·Founded 2016·GIA·30-day returns·Ships to Ireland
    Terms read on the retailer’s own site, October 19, 2026
    Visit Rare Carat
  7. 7Cape Diamonds68 in stock
    South Africa·Founded 2005·GIA·7-day returns·Ships to Ireland
    Terms read on the retailer’s own site, June 15, 2026
    Visit Cape Diamonds
  10. 10RockHer60 in stock
    United States·Founded 2016·GIA·Ships to Ireland
    Terms not yet verified
    Visit RockHer
Show 55 more retailers
  2. 12B2C Jewels53 in stock
    United States·Founded 2004·GIA·30-day returns·Ships to Ireland
    Terms read on the retailer’s own site, October 19, 2026
    Visit B2C Jewels
  3. 13

    SkyGem

    53 in stock
    AU·GIA, HRD
    Terms not yet verified
  6. 16Allurez48 in stock
    United States·Founded 2010·Ships to Ireland
    Terms not yet verified
    Visit Allurez
  9. 19

    GemTrove

    40 in stock
    AU·GIA
    Terms not yet verified
  13. 23

    Luvansh

    34 in stock
    US
    Terms not yet verified
  14. 24

    Steven Stone

    34 in stock
    UK·GIA
    Terms not yet verified
  22. 32Jared27 in stock
    United States·Founded 1993·GIA
    Terms not yet verified
    Visit Jared
  23. 33Zales27 in stock
    United States·Founded 1924·GIA
    Terms not yet verified
    Visit Zales
  25. 35GemsNY25 in stock
    United States·Founded 1988·GIA·Ships to Ireland
    Terms not yet verified
    Visit GemsNY
  26. 36

    SJ Gems

    23 in stock
    ZA·GIA
    Terms not yet verified
  32. 42

    The Perfect Carat

    13 in stock
    US·GIA
    Terms not yet verified
  35. 45

    Keyzar

    7 in stock
    US·GIA
    Terms not yet verified
  37. 47

    Washington Diamond

    7 in stock
    US·GIA
    Terms not yet verified
  45. 55

    deBebians

    3 in stock
    US·GIA
    Terms not yet verified
  52. 62

    Laura Preshong

    1 in stock
    US
    Terms not yet verified
  53. 63

    Lauren B

    1 in stock
    US
    Terms not yet verified
  54. 64

    Liori Diamonds

    1 in stock
    US·GIA
    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.

Explore all 1,769 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 cushion diamond, all grades

How pricing is spread at this spec

For the 434 diamonds at this spec with a recently confirmed price, each taken at its cheapest confirmed price, the distribution looks like this:

  • Lowest confirmed
    €2,573
  • 10th percentile
    €3,371
  • Median
    €5,679
  • 75th percentile
    €7,118
  • 90th percentile
    €9,000
  • Highest confirmed
    €16,540

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 €3,371. Use the explorer to sort by price.

Sort by price

Best cut quality for the spec?

452 of 1,769 active listings carry Excellent or Ideal across cut, polish and symmetry.

View top-cut subset

GIA-graded only?

1,568 of 1,769 (89%) carry GIA. 60 retailers stock GIA at this spec.

Want None or Faint fluorescence?

1,345 of 1,769 are graded None or Faint at this spec.

Shopping from Ireland?

27 of the 52 retailers with shipping details ship to Ireland. 25 do not. 13 retailers have not published any shipping details.

What this spec means

  • Cushion: a softened-corner square or rectangle with a vintage feel.
  • E colour: colourless, indistinguishable from D to most viewers.
  • 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 E SI1 cushion natural diamonds.

Compare 77 Diamonds vs MOH London

Related specs

Slightly smaller carat

cushion-1-25ct-e-si1-natural

Slightly larger carat

cushion-2ct-e-si1-natural

One colour grade higher

cushion-1-5ct-d-si1-natural

One colour grade lower

cushion-1-5ct-f-si1-natural

One clarity grade higher

cushion-1-5ct-e-vs2-natural

One clarity grade lower

cushion-1-5ct-e-si2-natural

Same spec, lab grown

cushion-1-5ct-e-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.