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Carat Hunter · Where to buy diamonds

1.25ct · G · SI1 · Marquise · 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

601

Retailers carrying

56

Price range

$2,995 to
$12,000

Median confirmed price

$5,485

Certificate mix:GIA 538 · IGI 39

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. 1Rare Carat45 in stock
    United States·Founded 2016·GIA, IGI·30-day returns·Ships to United States
    Terms read on the retailer’s own site, October 19, 2026
    Visit Rare Carat
  3. 3NZ Jewellers30 in stock
    New Zealand·Founded 2006·EGL, GIA, IGI·30-day returns·Ships to United States
    Terms read on the retailer’s own site, October 19, 2026
    Visit NZ Jewellers
  4. 4Carbon Sparkle26 in stock
    United States·EGL, GIA, IGI·21-day returns·Ships to United States
    Terms read on the retailer’s own site, September 2, 2026
    Visit Carbon Sparkle
  7. 7Aurelinne22 in stock
    United States·Founded 2021·EGL, GIA, IGI·Ships to United States
    Terms not yet verified
    Visit Aurelinne
  8. 8Yorxs21 in stock
    Germany·Founded 2011·GIA, IGI
    Terms not yet verified
    Visit Yorxs
Show 46 more retailers
  1. 11

    The Perfect Carat

    18 in stock
    US·EGL, GIA, IGI·Ships to United States
    Terms not yet verified
  3. 13Ritani16 in stock
    United States·Founded 1999·GIA·Ships to United States
    Terms not yet verified
    Visit Ritani
  5. 15B2C Jewels15 in stock
    United States·Founded 2004·GIA, IGI·30-day returns·Ships to United States
    Terms read on the retailer’s own site, October 19, 2026
    Visit B2C Jewels
  8. 18Adiamor14 in stock
    United States·Founded 1999·GIA·Ships to United States
    Terms not yet verified
    Visit Adiamor
  11. 21Cape Diamonds11 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
  15. 25RockHer10 in stock
    United States·Founded 2016·GIA, IGI·Ships to United States
    Terms not yet verified
    Visit RockHer
  20. 30Shane Co7 in stock
    United States·Founded 1971·GIA·Ships to United States
    Terms not yet verified
    Visit Shane Co
  25. 35Zales6 in stock
    United States·Founded 1924·GIA·Ships to United States
    Terms not yet verified
    Visit Zales
  26. 36Allurez5 in stock
    United States·Founded 2010·Ships to United States
    Terms not yet verified
    Visit Allurez
  27. 37Jared5 in stock
    United States·Founded 1993·GIA·Ships to United States
    Terms not yet verified
    Visit Jared
  30. 40

    GemTrove

    4 in stock
    AU·GIA
    Terms not yet verified
  31. 41GemsNY4 in stock
    United States·Founded 1988·GIA·Ships to United States
    Terms not yet verified
    Visit GemsNY
  46. 56

    Whiteflash

    1 in stock
    US·GIA·Ships to United States
    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 601 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 marquise diamond, all grades

How pricing is spread at this spec

For the 143 diamonds at this spec with a recently confirmed price, each taken at its cheapest confirmed price, the distribution looks like this:

  • Lowest confirmed
    $2,995
  • 10th percentile
    $4,048
  • Median
    $5,485
  • 75th percentile
    $6,460
  • 90th percentile
    $7,100
  • Highest confirmed
    $12,000

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 $4,048. Use the explorer to sort by price.

Sort by price

Best cut quality for the spec?

62 of 601 active listings carry Excellent or Ideal across cut, polish and symmetry.

View top-cut subset

GIA-graded only?

538 of 601 (90%) carry GIA. 54 retailers stock GIA at this spec.

Want None or Faint fluorescence?

508 of 601 are graded None or Faint at this spec.

Shopping from United States?

48 of the 54 retailers with shipping details ship to United States. 6 do not. 2 retailers have not published any shipping details.

What this spec means

  • Marquise: a pointed-end ellipse that faces up large for its carat.
  • G color: near-colorless, one step below the D to F band, with virtually no perceptible color 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 1.25ct G SI1 marquise natural diamonds.

Compare Rare Carat vs 77 Diamonds

Related specs

Slightly smaller carat

marquise-1ct-g-si1-natural

Slightly larger carat

marquise-1-5ct-g-si1-natural

One colour grade higher

marquise-1-25ct-f-si1-natural

One colour grade lower

marquise-1-25ct-h-si1-natural

One clarity grade higher

marquise-1-25ct-g-vs2-natural

One clarity grade lower

marquise-1-25ct-g-si2-natural

Same spec, lab grown

marquise-1-25ct-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 1.25ct G SI1 Marquise Natural Diamonds | Carat Hunter