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Carat Hunter · Where to buy diamonds

2ct · K · 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

191

Retailers carrying

35

Price range

SGD 6,136 to
SGD 19,436

Median confirmed price

SGD 11,403

Certificate mix:GIA 130 · IGI 57

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 Carat12 in stock
    United States·Founded 2016·GIA, IGI·30-day returns·Ships to Singapore
    Terms read on the retailer’s own site, October 19, 2026
    Visit Rare Carat
  5. 5Yorxs9 in stock
    Germany·Founded 2011·GIA, IGI
    Terms not yet verified
    Visit Yorxs
  8. 8NZ Jewellers8 in stock
    New Zealand·Founded 2006·GIA, IGI·30-day returns·Ships to Singapore
    Terms read on the retailer’s own site, October 19, 2026
    Visit NZ Jewellers
  9. 9

    The Perfect Carat

    8 in stock
    US·GIA, IGI
    Terms not yet verified
Show 24 more retailers
  4. 14Cape Diamonds6 in stock
    South Africa·Founded 2005·GIA, IGI·7-day returns·Ships to Singapore
    Terms read on the retailer’s own site, June 15, 2026
    Visit Cape Diamonds
  16. 26RockHer4 in stock
    United States·Founded 2016·GIA, IGI·Ships to Singapore
    Terms not yet verified
    Visit RockHer
  18. 28B2C Jewels3 in stock
    United States·Founded 2004·IGI·30-day returns·Ships to Singapore
    Terms read on the retailer’s own site, October 19, 2026
    Visit B2C Jewels
  23. 33Allurez1 in stock
    United States·Founded 2010·Ships to Singapore
    Terms not yet verified
    Visit Allurez

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 191 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 2ct natural marquise diamond, all grades

How pricing is spread at this spec

For the 38 diamonds at this spec with a recently confirmed price, each taken at its cheapest confirmed price, the distribution looks like this:

  • Lowest confirmed
    SGD 6,136
  • 10th percentile
    SGD 7,514
  • Median
    SGD 11,403
  • 75th percentile
    SGD 13,487
  • 90th percentile
    SGD 15,182
  • Highest confirmed
    SGD 19,436

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 SGD 7,514. Use the explorer to sort by price.

Sort by price

Best cut quality for the spec?

44 of 191 active listings carry Excellent or Ideal across cut, polish and symmetry.

View top-cut subset

GIA-graded only?

130 of 191 (68%) carry GIA. 32 retailers stock GIA at this spec.

Want None or Faint fluorescence?

164 of 191 are graded None or Faint at this spec.

Shopping from Singapore?

21 of the 32 retailers with shipping details ship to Singapore. 11 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.
  • K colour: Faint tint. Noticeable warmth even face-up, particularly in white-metal settings.
  • 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 2ct K SI1 marquise natural diamonds.

Compare Rare Carat vs Brilliance

Related specs

Slightly smaller carat

marquise-1-5ct-k-si1-natural

Slightly larger carat

marquise-3ct-k-si1-natural

One colour grade higher

marquise-2ct-j-si1-natural

One clarity grade higher

marquise-2ct-k-vs2-natural

One clarity grade lower

marquise-2ct-k-si2-natural

Same spec, lab grown

marquise-2ct-k-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 2ct K SI1 Marquise Natural Diamonds | Carat Hunter