Radiant|Natural|GIA

1.50ct H SI1 Radiant Natural Diamond

GD • H/SI1 • GIA 2231731143

Certificate GIA 2231731143

Diamond specifications and retailer prices

From £3,976 GBP
A$8,208 AUD
As of November 2, 2026
Save £2,994 GBP (43%) vs most expensive(unlock to see where)
32 retailers carry this diamond
Most expensive: £7,902 GBP at NZ Jewellers · As of October 9, 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 standard cut grade stated by the retailer rather than the lab and certified by GIA 2231731143. Listed at 32 retailers as of October 26, 2026, with a 75% 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
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2231731143
Dimensions7.34 × 5.83 × 3.94 mm
L/W Ratio1.26
Culet sizeNone
Key to symbols
Feather, Crystal, Needle, Etch Channel, Natural
Top View
7.34 mm5.83 mm1.50 ctH / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2231731143
Side View
Table 67.0%CrownGirdle: ThickPavilionCulet: NoneDepth 67.5%

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: Nov 2
Current: £5,753 GBP|Low: £3,142 GBP|High: £7,429 GBP|Avg: £4,696 GBP|+1.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
October 27, 2026
Retailer 13£3,441 GBP
Retailer 5£3,733 GBP
Retailer 18£3,951 GBP
Retailer 11£3,976 GBP
Retailer 2£3,984 GBP
Retailer 3£3,998 GBP
Retailer 8£4,226 GBP
Retailer 16£4,280 GBP
Retailer 12£4,505 GBP
Retailer 19£4,530 GBP
Retailer 6£4,590 GBP
Retailer 7£4,590 GBP
Retailer 20£4,670 GBP
Retailer 10£4,747 GBP
Retailer 4£4,840 GBP
Retailer 14£5,134 GBP
Retailer 9£5,209 GBP
Retailer 1£5,753 GBP
Retailer 15£6,970 GBP
Retailer 17£7,368 GBP

33 data points across 20 retailers

32 retailers£3,976 GBP to £6,970 GBP

Retailer 1
-
£3,733 GBP
$5,009 USD
Price last confirmed 7 days ago
B+
Retailer 2
-
£3,976 GBP
A$8,208 AUD
View
Retailer 3
-
£3,984 GBP
$5,346 USD
View
Price last confirmed 8 days ago
Retailer 4
-
£3,998 GBP
$5,365 USD
View
Price last confirmed 6 days ago
Retailer 5
-
£4,226 GBP
$5,671 USD
View
Price last confirmed 8 days ago
Retailer 6
-
£4,280 GBP
$5,744 USD
View
Price last confirmed 32 days ago
Retailer 7
-
£4,280 GBP
$5,744 USD
View
Price last confirmed 32 days ago
Retailer 8
-
£4,280 GBP
$5,744 USD
View
Price last confirmed 41 days ago
Retailer 9
-
£4,280 GBP
$5,744 USD
View
Price last confirmed 8 days ago
Retailer 10
-
£4,280 GBP
$5,744 USD
View
Price last confirmed 8 days ago
Retailer 11
-
£4,280 GBP
$5,744 USD
View
Price last confirmed 11 days ago
B+
Retailer 12
-
£4,505 GBP
View
Retailer 13
-
£4,530 GBP
$6,079 USD
View
Price last confirmed 12 days ago
Retailer 14
-
£4,590 GBP
$6,160 USD
View
Price last confirmed 7 days ago
Retailer 15
-
£4,590 GBP
$6,160 USD
View
Price last confirmed 7 days ago
Retailer 16
-
£4,670 GBP
A$9,642 AUD
View
Price last confirmed 22 days ago
Retailer 17
-
£4,747 GBP
$6,370 USD
View
Price last confirmed 7 days ago
B
Retailer 18
-
£4,840 GBP
$6,495 USD
View
Retailer 19
-
£4,938 GBP
$6,627 USD
View
Price last confirmed 52 days ago
Retailer 20
-
£4,938 GBP
$6,627 USD
View
Price last confirmed 41 days ago
Retailer 21
-
£4,938 GBP
$6,627 USD
View
Price last confirmed 34 days ago
Retailer 22
-
£4,938 GBP
$6,627 USD
View
Price last confirmed 24 days ago
Retailer 23
-
£4,938 GBP
$6,627 USD
View
Price last confirmed 12 days ago
B
Retailer 24
-
£5,134 GBP
€6,562 EUR
View
Retailer 25
-
£5,209 GBP
$6,990 USD
View
Price last confirmed 18 days ago
B
Retailer 26
-
£5,753 GBP
ZAR 124,720 ZAR
View
B
Retailer 27
-
£6,970 GBP
View
Retailer 28
-
£7,368 GBP
View
Price last confirmed 7 days ago
Retailer 29
-
£7,902 GBP
$10,604 USD
View
Price last confirmed 33 days ago
Retailer 30
-
£7,902 GBP
$10,604 USD
View
Price last confirmed 42 days ago
Retailer 31
-
£7,902 GBP
$10,604 USD
View
Price last confirmed 12 days ago
Most Expensive
NZ Jewellers
45b76ebe-7f99-4bf6-ac14-46a8830868ed · Oct 9
£7,902 GBP
$10,604 USD
View
Price last confirmed 24 days ago
31 more retailers have this diamond
Prices start from £3,976 GBPSave up to £2,994 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
£3,976 GBP