Radiant|Natural|GIA

1.50ct H SI1 Radiant Natural Diamond

VG • H/SI1 • GIA 6402063917

Certificate GIA 6402063917

Diamond specifications and retailer prices

From £4,679 GBP
$6,270 USD
As of October 28, 2026
Save £4,056 GBP (46%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: £10,427 GBP at NZ Jewellers · As of September 20, 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 SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 6402063917. Listed at 24 retailers as of October 28, 2026, with a 87% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishVery Good
SymmetryVery Good
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 6402063917
Dimensions6.81 × 5.71 × 3.95 mm
L/W Ratio1.19
Top View
6.81 mm5.71 mm1.50 ctH / SI1
OriginNatural
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceMedium
CertificateGIA 6402063917
Side View
Table 61.0%CrownGirdle: Extremely ThickPavilionCulet: NoneDepth 69.3%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 28
Current: £5,884 GBP|Low: £4,679 GBP|High: £8,793 GBP|Avg: £6,096 GBP|-0.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 30, 2026
Retailer 10£4,679 GBP
Retailer 2£4,926 GBP
Retailer 11£5,213 GBP
Retailer 8£5,214 GBP
Retailer 12£5,217 GBP
Retailer 3£5,719 GBP
Retailer 1£5,884 GBP
Retailer 9£5,979 GBP
Retailer 6£6,802 GBP
Retailer 4£6,867 GBP
Retailer 7£7,591 GBP
Retailer 5£8,735 GBP

36 data points across 12 retailers

24 retailers£4,679 GBP to £8,735 GBP

B+
Cheapest Retailer
-
£4,679 GBP
$6,270 USD
B+
Retailer 2
-
£4,851 GBP
A$9,999 AUD
View
B+
Retailer 3
-
£4,926 GBP
$6,600 USD
View
B
Retailer 4
-
£5,145 GBP
CA$9,575 CAD
View
B
Retailer 5
-
£5,213 GBP
$6,985 USD
View
Final sale: no returns
Retailer 6
-
£5,214 GBP
$6,986 USD
View
Price last confirmed 8 days ago
B
Retailer 7
-
£5,217 GBP
$6,990 USD
View
B
Retailer 8
-
£5,257 GBP
$7,044 USD
View
Retailer 9
-
£5,648 GBP
$7,568 USD
View
Price last confirmed 41 days ago
B
Retailer 10
-
£5,719 GBP
A$11,788 AUD
View
B
Retailer 11
-
£5,884 GBP
View
B
Retailer 12
-
£5,968 GBP
$7,997 USD
View
Retailer 13
-
£5,979 GBP
A$12,324 AUD
View
Price last confirmed 11 days ago
B
Retailer 14
-
£6,232 GBP
$8,350 USD
View
B
Retailer 15
-
£6,232 GBP
$8,350 USD
View
B
Retailer 16
-
£6,282 GBP
$8,417 USD
View
B
Retailer 17
-
£6,441 GBP
$8,630 USD
View
Retailer 18
-
£6,517 GBP
$8,732 USD
View
Price last confirmed 48 days ago
Retailer 19
-
£6,517 GBP
$8,732 USD
View
Price last confirmed 41 days ago
B
Retailer 20
-
£6,802 GBP
€8,680 EUR
View
Retailer 21
-
£6,867 GBP
$9,201 USD
View
Price last confirmed 10 days ago
B
Retailer 22
-
£7,591 GBP
ZAR 164,312 ZAR
View
B
Retailer 23
-
£8,735 GBP
View
Most Expensive
NZ Jewellers
8944de0e-8a30-4f9f-bdbe-a017dfb80603 · Sep 20
£10,427 GBP
$13,971 USD
View
Price last confirmed 42 days ago
23 more retailers have this diamond
Prices start from £4,679 GBPSave up to £4,056 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
£4,679 GBP