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Radiant|Natural|GIA

1.50ct H SI2 Radiant Natural Diamond

GD • H/SI2 • GIA 6405174570

Certificate GIA 6405174570

Diamond specifications and retailer prices

From £5,560 GBP
$7,450 USD
As of October 28, 2026
Save £6,918 GBP (55%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £12,478 GBP at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 1.5ct natural radiant diamond

This 1.5ct natural radiant sits in the one-and-a-half to two carat band, graded H colour (near-colourless) and SI2 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 6405174570. Listed at 19 retailers as of October 28, 2026, with prices from £5,560 to £12,478, a £6,918 spread on the same certified stone. NZ Jewellers lists it at £12,478. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.50
Carat
H
Colour
SI2
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6405174570
Dimensions7.40 × 5.69 × 3.93 mm
L/W Ratio1.30
Top View
7.40 mm5.69 mm1.50 ctH / SI2
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6405174570
Side View
Table 66.0%CrownGirdle: ThinPavilionCulet: NoneDepth 68.9%

Caratlytics Score

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B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 28
Current: £12,478 GBP|Low: £5,560 GBP|High: £12,478 GBP|Avg: £7,983 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 31, 2026
Retailer 6£5,560 GBP
Retailer 9£6,239 GBP
Retailer 2£6,746 GBP
Retailer 8£6,759 GBP
Retailer 7£6,863 GBP
Retailer 4£7,724 GBP
Retailer 10£7,798 GBP
Retailer 11£8,213 GBP
Retailer 3£8,893 GBP
Retailer 5£10,453 GBP
NZ Jewellers£12,478 GBP

44 data points across 11 retailers

19 retailers£5,560 GBP to £12,478 GBP

B
Cheapest Retailer
-
£5,560 GBP
$7,450 USD
B
Retailer 2
-
£5,808 GBP
$7,782 USD
View
B
Retailer 3
-
£5,831 GBP
A$12,020 AUD
View
B
Retailer 4
-
£5,842 GBP
$7,827 USD
View
B
Retailer 5
-
£6,085 GBP
CA$11,325 CAD
View
B
Retailer 6
-
£6,239 GBP
$8,359 USD
View
B
Retailer 7
-
£6,291 GBP
$8,429 USD
View
B
Retailer 8
-
£6,746 GBP
View
B
Retailer 9
-
£6,759 GBP
$9,056 USD
View
B
Retailer 10
-
£6,863 GBP
$9,195 USD
View
B
Retailer 11
-
£7,175 GBP
$9,614 USD
View
B
Retailer 12
-
£7,381 GBP
$9,890 USD
View
B
Retailer 13
-
£7,381 GBP
$9,890 USD
View
C
Retailer 14
-
£7,627 GBP
$10,220 USD
View
B
Retailer 15
-
£7,724 GBP
€9,857 EUR
View
C
Retailer 16
-
£7,798 GBP
$10,449 USD
View
Retailer 17
-
£8,213 GBP
$11,004 USD
View
Price last confirmed 8 days ago
C
Retailer 18
-
£10,453 GBP
View
Most Expensive
C
NZ Jewellers
3e09dce9-7112-43dc-a30b-d214329d63b0 · Oct 30
£12,478 GBP
$16,719 USD
View
18 more retailers have this diamond
Prices start from £5,560 GBPSave up to £6,918 GBP

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

B
1.50ct Radiant
£5,560 GBP