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Carat Hunter · Where to buy diamonds

0.5ct · I · IF · Round · Lab-grown

Live snapshot of every retailer carrying this exact spec today.

Updated June 4, 2026 · Independent. Zero affiliate revenue.

Market at this spec

Active listings

495

Retailers carrying

14

Price range

€305 to
€2,686

Median active price

€656

Certificate mix:IGI 324 · GIA 162

Range and median are cohort statistics across every active listing at this spec. They are not per-retailer pricing claims.

Every retailer that stocks this spec

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

  2. 2

    TenTen Diamonds

    85 in stock
    ·GIA, IGI
  3. 3

    Calavera New York

    84 in stock
    US·GIA, IGI
  5. 5

    Carbon Sparkle

    74 in stock
    US·GIA, IGI
Show 4 more retailers

Stock counts are updated daily. Founded, return window and shipping details are retailer-provided and were last verified March 7, 2026.

Explore all 495 stones in this cohort

How pricing is spread at this spec

For all 495 active listings at this spec, the price distribution looks like this:

  • Lowest active
    €305
  • 10th percentile
    €468
  • Median
    €656
  • 75th percentile
    €943
  • 90th percentile
    €1,162
  • Highest active
    €2,686

The 8.8x spread from lowest to highest active 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 active listings start around €468. Use the explorer to sort by price.

Sort by price

Best cut quality for the spec?

433 of 495 active listings carry Excellent or Ideal across cut, polish and symmetry.

View top-cut subset

GIA-graded only?

162 of 495 (33%) carry GIA. 6 retailers stock GIA at this spec.

Want None or Faint fluorescence?

471 of 495 are graded None or Faint at this spec.

What this spec means

  • Round: the most cut shape, with the highest light return per carat.
  • I color: near-colourless, faint warm tint just detectable in larger stones.
  • IF clarity: internally flawless, no internal imperfections, surface marks only.
  • Lab-grown: chemically identical to natural diamonds, typically 60% to 80% less than a comparable natural cohort.

Compare the top retailers carrying this spec

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

Compare NZ Jewellers vs TenTen Diamonds

Related specs

Slightly larger carat

round-0-75ct-i-if-lab

One colour grade higher

round-0-5ct-h-if-lab

One clarity grade higher

round-0-5ct-i-fl-lab

One clarity grade lower

round-0-5ct-i-vvs1-lab

Same spec, natural

round-0-5ct-i-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?

Live listings refresh daily. 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.