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Carat Hunter · Where to buy diamonds

1.5ct · G · IF · Round · Lab-grown

Live snapshot of every retailer carrying this exact spec today.

Updated June 3, 2026 · Independent. Zero affiliate revenue.

Market at this spec

Active listings

234

Retailers carrying

34

Price range

£323 to
£35,542

Median active price

£5,618

Certificate mix:IGI 135 · GIA 70 · HRD 23

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.

  8. 8

    TenTen Diamonds

    12 in stock
    ·GIA, IGI
Show 15 more retailers
  1. 11

    Calavera New York

    10 in stock
    US·GIA, IGI
  3. 13

    Carbon Sparkle

    9 in stock
    US·GIA, IGI

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

Explore all 234 stones in this cohort

How pricing is spread at this spec

For all 234 active listings at this spec, the price distribution looks like this:

  • Lowest active
    £323
  • 10th percentile
    £613
  • Median
    £5,618
  • 75th percentile
    £10,438
  • 90th percentile
    £15,766
  • Highest active
    £35,542

The 110.2x 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 £613. Use the explorer to sort by price.

Sort by price

Best cut quality for the spec?

201 of 234 active listings carry Excellent or Ideal across cut, polish and symmetry.

View top-cut subset

GIA-graded only?

70 of 234 (30%) carry GIA. 10 retailers stock GIA at this spec.

Want None or Faint fluorescence?

209 of 234 are graded None or Faint at this spec.

Shopping from United Kingdom?

7 of the 25 retailers ship to United Kingdom. 18 do not.

What this spec means

  • Round: the most cut shape, with the highest light return per carat.
  • G colour: near-colourless, one step below the D-F band, virtually no perceptible colour to most buyers.
  • 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 1.5ct G IF round lab grown diamonds.

Compare Rare Carat vs NZ Jewellers

Related specs

Slightly smaller carat

round-1-25ct-g-if-lab

Slightly larger carat

round-2ct-g-if-lab

One colour grade higher

round-1-5ct-f-if-lab

One colour grade lower

round-1-5ct-h-if-lab

One clarity grade higher

round-1-5ct-g-fl-lab

One clarity grade lower

round-1-5ct-g-vvs1-lab

Same spec, natural

round-1-5ct-g-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.

Where to Buy 1.5ct G IF Round Lab Grown Diamonds | Carat Hunter