1ct · I · IF · Marquise · Natural

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

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

1. 1NZ Jewellers25 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 Sparkle21 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. 3Yorxs19 in stock

   Germany·Founded 2011·GIA, HRD, IGI·100-day returns

   Terms not yet verified

   Visit Yorxs
4. 4MOH London19 in stock

   United Kingdom·GIA, HRD, IGI

   Terms not yet verified

   Visit MOH London
5. 5

   The Perfect Carat

   19 in stock

   US·GIA, HRD, IGI

   Terms not yet verified
6. 6Aurelinne18 in stock

   United States·Founded 2021·GIA, HRD, IGI·30-day returns·Ships to United States

   Terms not yet verified

   Visit Aurelinne
7. 7Moon Ocean16 in stock

   United Kingdom·Founded 2022·GIA, IGI·30-day returns·Ships to United States

   Terms not yet verified

   Visit Moon Ocean
8. 8Rare Carat16 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
9. 9William & Sons Jewelers15 in stock

   United States·GIA, HRD, IGI·Final sale: no returns·Ships to United States

   Terms read on the retailer’s own site, October 19, 2026

   Visit William & Sons Jewelers
10. 10B2C 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

Stock counts are updated daily. 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.

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

• 1.03ct I IFfrom $3,290 across 19 retailersAs of October 25, 2026
• 1.01ct I IFfrom $3,379 across 16 retailersAs of October 28, 2026
• 1.03ct I IFfrom $3,242 across 6 retailersAs of October 28, 2026
• 1.03ct I IFfrom $2,832 across 6 retailersAs of October 28, 2026
• 1.01ct I IFfrom $3,126 across 8 retailersAs of October 28, 2026
• 1.03ct I IFfrom $3,894 across 7 retailersAs of October 28, 2026

See every 1ct natural marquise diamond, all grades

For the 66 diamonds at this spec with a recently confirmed price, each taken at its cheapest confirmed price, the distribution looks like this:

• Lowest confirmed
  $2,443
• 10th percentile
  $2,909
• Median
  $3,417
• 75th percentile
  $4,050
• 90th percentile
  $4,546
• Highest confirmed
  $7,511

The 3.1x spread from the lowest to the highest confirmed price is normal for cohorts at this spec. Differences reflect cert lab, cut quality, brand premium and inclusions visibility.

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

• Marquise: a pointed-end ellipse that faces up large for its carat.
• I color: near-colorless, with a faint warm tint just detectable in larger stones.
• IF clarity: internally flawless, with no internal imperfections and surface marks only.
• Natural: mined diamonds with the certification, provenance and resale profile traditional buyers expect.

Side-by-side facts for the two stores carrying the most 1ct I IF marquise natural diamonds.