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Carat Hunter · Where to buy diamonds

1ct · I · VS1 · Radiant · Lab-grown

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

Updated October 29, 2026 · Independent. Zero affiliate revenue.

Market at this spec

Active listings

198

Retailers carrying

29

Price range

£122 to
£835

Median confirmed price

£413

Certificate mix:IGI 174

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.

  3. 3VRAI12 in stock
    United States·Founded 2014·DF·30-day returns·Ships to United Kingdom
    Terms not yet verified
    Visit VRAI
  4. 4Aurelinne11 in stock
    United States·Founded 2021·IGI·30-day returns·Ships to United Kingdom
    Terms not yet verified
    Visit Aurelinne
  5. 5NZ Jewellers11 in stock
    New Zealand·Founded 2006·IGI·30-day returns·Ships to United Kingdom
    Terms read on the retailer’s own site, October 19, 2026
    Visit NZ Jewellers
  6. 6Cape Diamonds10 in stock
    South Africa·Founded 2005·IGI·7-day returns·Ships to United Kingdom
    Terms read on the retailer’s own site, June 15, 2026
    Visit Cape Diamonds
  8. 8Moon Ocean9 in stock
    United Kingdom·Founded 2022·IGI·30-day returns·Ships to United Kingdom
    Terms not yet verified
    Visit Moon Ocean
  10. 10Rare Carat9 in stock
    United States·Founded 2016·IGI·30-day returns·Ships to United Kingdom
    Terms read on the retailer’s own site, October 19, 2026
    Visit Rare Carat
Show 15 more retailers
  1. 11RockHer8 in stock
    United States·Founded 2016·IGI·40-day returns·Ships to United Kingdom
    Terms not yet verified
    Visit RockHer
  3. 13

    The Perfect Carat

    8 in stock
    US·IGI
    Terms not yet verified
  5. 15B2C Jewels7 in stock
    United States·Founded 2004·IGI·30-day returns·Ships to United Kingdom
    Terms read on the retailer’s own site, October 19, 2026
    Visit B2C Jewels
  7. 17Allurez6 in stock
    United States·Founded 2010·30-day returns·Ships to United Kingdom
    Terms not yet verified
    Visit Allurez
  10. 20Adiamor6 in stock
    United States·Founded 1999·IGI·30-day returns
    Terms not yet verified
    Visit Adiamor
  13. 23Yorxs2 in stock
    Germany·Founded 2011·IGI·100-day returns
    Terms not yet verified
    Visit Yorxs

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 198 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 1ct lab grown radiant diamond, all grades

How pricing is spread at this spec

For the 46 diamonds at this spec with a recently confirmed price, each taken at its cheapest confirmed price, the distribution looks like this:

  • Lowest confirmed
    £122
  • 10th percentile
    £192
  • Median
    £413
  • 75th percentile
    £647
  • 90th percentile
    £813
  • Highest confirmed
    £835

The 6.9x 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 £192. Use the explorer to sort by price.

Sort by price

Best cut quality for the spec?

123 of 198 active listings carry Excellent or Ideal across cut, polish and symmetry.

View top-cut subset

Want None or Faint fluorescence?

189 of 198 are graded None or Faint at this spec.

Shopping from United Kingdom?

19 of the 25 retailers ship to United Kingdom. 6 do not.

What this spec means

  • Radiant: a rectangular brilliant cut that combines the emerald outline with round-style faceting.
  • I colour: near-colourless, with a faint warm tint just detectable in larger stones.
  • VS1 clarity: very slight inclusions, eye-clean to virtually everyone.
  • 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 1ct I VS1 radiant lab grown diamonds.

Compare Loose Grown Diamond vs MOH London

Related specs

Slightly smaller carat

radiant-0-75ct-i-vs1-lab

Slightly larger carat

radiant-1-25ct-i-vs1-lab

One colour grade higher

radiant-1ct-h-vs1-lab

One clarity grade higher

radiant-1ct-i-vvs2-lab

One clarity grade lower

radiant-1ct-i-vs2-lab

Same spec, natural

radiant-1ct-i-vs1-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.

Where to Buy 1ct I VS1 Radiant Lab Grown Diamonds | Carat Hunter