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Carat Hunter · Where to buy diamonds

0.5ct · F · IF · Marquise · Lab-grown

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

Updated November 1, 2026 · Independent. Zero affiliate revenue.

Market at this spec

Active listings

13

Retailers carrying

13

Certificate mix:IGI 10

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.

  2. 2Rare Carat1 in stock
    United States·Founded 2016·IGI·30-day returns·Ships to European Union
    Terms read on the retailer’s own site, October 19, 2026
    Visit Rare Carat
  9. 9Cape Diamonds1 in stock
    South Africa·Founded 2005·IGI·7-day returns·Ships to European Union
    Terms read on the retailer’s own site, June 15, 2026
    Visit Cape Diamonds
Show 3 more retailers
  2. 12Aurelinne1 in stock
    United States·Founded 2021·30-day returns·Ships to European Union
    Terms not yet verified
    Visit Aurelinne

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 13 stones in this cohort

How to pick

Best cut quality for the spec?

3 of 13 active listings carry Excellent or Ideal across cut, polish and symmetry.

View top-cut subset

Want None or Faint fluorescence?

13 of 13 are graded None or Faint at this spec.

Shopping from European Union?

9 of the 13 retailers ship to European Union. 4 do not.

What this spec means

  • Marquise: a pointed-end ellipse that faces up large for its carat.
  • F color: colorless, with a slight tint detectable only by experts under controlled light.
  • IF clarity: internally flawless, with no internal imperfections and surface marks only.
  • Lab-grown: chemically identical to natural diamonds, typically at least 90% less than a comparable natural cohort from 1 carat up.

Compare the top retailers carrying this spec

Side-by-side facts for the two stores carrying the most 0.5ct F IF marquise lab grown diamonds.

Compare Brilliant Earth vs Rare Carat

Related specs

Slightly larger carat

marquise-0-75ct-f-if-lab

One colour grade higher

marquise-0-5ct-e-if-lab

One colour grade lower

marquise-0-5ct-g-if-lab

One clarity grade higher

marquise-0-5ct-f-fl-lab

One clarity grade lower

marquise-0-5ct-f-vvs1-lab

Same spec, natural

marquise-0-5ct-f-if-natural

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.