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Carat Hunter · Where to buy diamonds

1.25ct · K · SI2 · Cushion · 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

142

Retailers carrying

30

Price range

CA$1,336 to
CA$5,418

Median confirmed price

CA$2,957

Certificate mix:GIA 121 · HRD 2 · AGS 1

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. 3Yorxs12 in stock
    Germany·Founded 2011·GIA, HRD
    Terms not yet verified
    Visit Yorxs
  7. 7Rare Carat8 in stock
    United States·Founded 2016·GIA·30-day returns·Ships to Canada
    Terms read on the retailer’s own site, October 19, 2026
    Visit Rare Carat
  8. 8B2C Jewels7 in stock
    United States·Founded 2004·GIA·30-day returns·Ships to Canada
    Terms read on the retailer’s own site, October 19, 2026
    Visit B2C Jewels
  9. 9Adiamor6 in stock
    United States·Founded 1999·GIA·Ships to Canada
    Terms not yet verified
    Visit Adiamor
Show 20 more retailers
  4. 14Ritani4 in stock
    United States·Founded 1999·GIA·Ships to Canada
    Terms not yet verified
    Visit Ritani
  7. 17

    GemTrove

    3 in stock
    AU·GIA
    Terms not yet verified
  9. 19

    The Perfect Carat

    3 in stock
    US·GIA
    Terms not yet verified
  17. 27GemsNY1 in stock
    United States·Founded 1988·AGS·Ships to Canada
    Terms not yet verified
    Visit GemsNY

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 142 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 1.25ct natural cushion diamond, all grades

How pricing is spread at this spec

For the 49 diamonds at this spec with a recently confirmed price, each taken at its cheapest confirmed price, the distribution looks like this:

  • Lowest confirmed
    CA$1,336
  • 10th percentile
    CA$1,717
  • Median
    CA$2,957
  • 75th percentile
    CA$3,718
  • 90th percentile
    CA$4,559
  • Highest confirmed
    CA$5,418

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 CA$1,717. Use the explorer to sort by price.

Sort by price

Best cut quality for the spec?

31 of 142 active listings carry Excellent or Ideal across cut, polish and symmetry.

View top-cut subset

GIA-graded only?

121 of 142 (85%) carry GIA. 27 retailers stock GIA at this spec.

Want None or Faint fluorescence?

133 of 142 are graded None or Faint at this spec.

Shopping from Canada?

20 of the 27 retailers with shipping details ship to Canada. 7 do not. 3 retailers have not published any shipping details.

What this spec means

  • Cushion: a softened-corner square or rectangle with a vintage feel.
  • K color: Faint tint. Noticeable warmth even face-up, particularly in white-metal settings.
  • SI2 clarity: Slightly Included 2. Inclusions easy to see at 10x. May be visible to the unaided eye in some stones.
  • 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 1.25ct K SI2 cushion natural diamonds.

Compare Allurez vs 77 Diamonds

Related specs

Slightly smaller carat

cushion-1ct-k-si2-natural

Slightly larger carat

cushion-1-5ct-k-si2-natural

One colour grade higher

cushion-1-25ct-j-si2-natural

One clarity grade higher

cushion-1-25ct-k-si1-natural

Same spec, lab grown

cushion-1-25ct-k-si2-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 1.25ct K SI2 Cushion Natural Diamonds | Carat Hunter