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Carat Hunter · Where to buy diamonds

0.5ct · I · VS1 · Marquise · Natural

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

Updated November 5, 2026 · Independent. Zero affiliate revenue.

Market at this spec

Active listings

1,721

Retailers carrying

53

Price range

SGD 440 to
SGD 2,843

Median confirmed price

SGD 907

Certificate mix:GIA 1,202 · IGI 459

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 Carat128 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
  3. 3NZ Jewellers111 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
  5. 5Yorxs82 in stock
    Germany·Founded 2011·GIA, IGI·100-day returns
    Terms not yet verified
    Visit Yorxs
  6. 6

    The Perfect Carat

    81 in stock
    US·GIA, IGI
    Terms not yet verified
  8. 8Aurelinne68 in stock
    United States·Founded 2021·GIA, IGI·30-day returns·Ships to Singapore
    Terms not yet verified
    Visit Aurelinne
Show 15 more retailers
  2. 12Moon Ocean50 in stock
    United Kingdom·Founded 2022·GIA, IGI·30-day returns·Ships to Singapore
    Terms not yet verified
    Visit Moon Ocean
  3. 13B2C Jewels46 in stock
    United States·Founded 2004·GIA, IGI·30-day returns·Ships to Singapore
    Terms read on the retailer’s own site, October 19, 2026
    Visit B2C Jewels
  5. 15RockHer44 in stock
    United States·Founded 2016·GIA, IGI·40-day returns·Ships to Singapore
    Terms not yet verified
    Visit RockHer
  6. 16Cape Diamonds37 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
  7. 17DreamStone36 in stock
    United States·Founded 1998·GIA, IGI·30-day returns·Ships to Singapore
    Terms not yet verified
    Visit DreamStone
  10. 20Ritani29 in stock
    United States·Founded 1999·GIA·30-day returns
    Terms not yet verified
    Visit Ritani
  13. 23Brilliance25 in stock
    United States·Founded 2002·GIA, IGI·30-day returns·Ships to Singapore
    Terms not yet verified
    Visit Brilliance

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.

Explore all 1,721 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 0.5ct natural marquise diamond, all grades

How pricing is spread at this spec

For the 389 diamonds at this spec with a recently confirmed price, each taken at its cheapest confirmed price, the distribution looks like this:

  • Lowest confirmed
    SGD 440
  • 10th percentile
    SGD 657
  • Median
    SGD 907
  • 75th percentile
    SGD 1,151
  • 90th percentile
    SGD 1,486
  • Highest confirmed
    SGD 2,843

The 6.5x 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.

How to pick

Lowest price floor for the spec?

The cheapest confirmed prices start around SGD 657. Use the explorer to sort by price.

Sort by price

Best cut quality for the spec?

174 of 1,721 active listings carry Excellent or Ideal across cut, polish and symmetry.

View top-cut subset

GIA-graded only?

1,202 of 1,721 (70%) carry GIA. 25 retailers stock GIA at this spec.

Want None or Faint fluorescence?

1,521 of 1,721 are graded None or Faint at this spec.

Shopping from Singapore?

19 of the 25 retailers ship to Singapore. 6 do not.

What this spec means

  • Marquise: a pointed-end ellipse that faces up large for its carat.
  • I colour: near-colourless, with a faint warm tint just detectable in larger stones.
  • VS1 clarity: very slight inclusions, eye-clean to virtually everyone.
  • 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 0.5ct I VS1 marquise natural diamonds.

Compare Rare Carat vs 77 Diamonds

Related specs

Slightly larger carat

marquise-0-75ct-i-vs1-natural

One colour grade higher

marquise-0-5ct-h-vs1-natural

One clarity grade higher

marquise-0-5ct-i-vvs2-natural

One clarity grade lower

marquise-0-5ct-i-vs2-natural

Same spec, lab grown

marquise-0-5ct-i-vs1-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 0.5ct I VS1 Marquise Natural Diamonds | Carat Hunter