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Carat Hunter · Where to buy diamonds

1.5ct · I · VS1 · Radiant · Natural

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

Updated November 6, 2026 · Independent. Zero affiliate revenue.

Market at this spec

Active listings

1,041

Retailers carrying

56

Price range

A$4,471 to
A$23,190

Median confirmed price

A$10,284

Certificate mix:GIA 974 · IGI 4 · HRD 3

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. 1NZ Jewellers51 in stock
    New Zealand·Founded 2006·EGL, GIA, IGI·30-day returns·Ships to Australia
    Terms read on the retailer’s own site, October 19, 2026
    Visit NZ Jewellers
  7. 7Allurez38 in stock
    United States·Founded 2010·Ships to Australia
    Terms not yet verified
    Visit Allurez
  9. 9Rare Carat36 in stock
    United States·Founded 2016·GIA·30-day returns·Ships to Australia
    Terms read on the retailer’s own site, October 19, 2026
    Visit Rare Carat
Show 48 more retailers
  1. 11

    The Perfect Carat

    32 in stock
    US·EGL, GIA
    Terms not yet verified
  2. 12B2C Jewels31 in stock
    United States·Founded 2004·GIA·30-day returns·Ships to Australia
    Terms read on the retailer’s own site, October 19, 2026
    Visit B2C Jewels
  4. 14Jared30 in stock
    United States·Founded 1993·GIA
    Terms not yet verified
    Visit Jared
  9. 19Zales28 in stock
    United States·Founded 1924·GIA
    Terms not yet verified
    Visit Zales
  10. 20Cape Diamonds26 in stock
    South Africa·Founded 2005·GIA·7-day returns·Ships to Australia
    Terms read on the retailer’s own site, June 15, 2026
    Visit Cape Diamonds
  15. 25RockHer23 in stock
    United States·Founded 2016·GIA·Ships to Australia
    Terms not yet verified
    Visit RockHer
  20. 30GemsNY19 in stock
    United States·Founded 1988·GIA·Ships to Australia
    Terms not yet verified
    Visit GemsNY
  22. 32

    Washington Diamond

    14 in stock
    US·GIA
    Terms not yet verified
  37. 47

    GemTrove

    3 in stock
    AU·GIA·Ships to Australia
    Terms not yet verified
  47. 57

    USA Jewels

    1 in stock
    US·GIA
    Terms not yet verified

Stock counts reflect current listings. 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 1,041 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 1.5ct natural radiant diamond, all grades

How pricing is spread at this spec

For the 188 diamonds at this spec with a recently confirmed price, each taken at its cheapest confirmed price, the distribution looks like this:

  • Lowest confirmed
    A$4,471
  • 10th percentile
    A$7,242
  • Median
    A$10,284
  • 75th percentile
    A$12,157
  • 90th percentile
    A$14,304
  • Highest confirmed
    A$23,190

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 A$7,242. Use the explorer to sort by price.

Sort by price

Best cut quality for the spec?

297 of 1,041 active listings carry Excellent or Ideal across cut, polish and symmetry.

View top-cut subset

GIA-graded only?

974 of 1,041 (94%) carry GIA. 56 retailers stock GIA at this spec.

Want None or Faint fluorescence?

962 of 1,041 are graded None or Faint at this spec.

Shopping from Australia?

36 of the 54 retailers with shipping details ship to Australia. 18 do not. 4 retailers have not published any shipping details.

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.
  • 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 1.5ct I VS1 radiant natural diamonds.

Compare NZ Jewellers vs Carbon Sparkle

Related specs

Slightly smaller carat

radiant-1-25ct-i-vs1-natural

Slightly larger carat

radiant-2ct-i-vs1-natural

One colour grade higher

radiant-1-5ct-h-vs1-natural

One colour grade lower

radiant-1-5ct-j-vs1-natural

One clarity grade higher

radiant-1-5ct-i-vvs2-natural

One clarity grade lower

radiant-1-5ct-i-vs2-natural

Same spec, lab grown

radiant-1-5ct-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 1.5ct I VS1 Radiant Natural Diamonds | Carat Hunter