CaratHunter
Plans
Radiant|Natural|GIA

1.50ct I SI2 Radiant Natural Diamond

ID • I/SI2 • GIA 5241008507

Certificate GIA 5241008507

Diamond specifications and retailer prices

From £3,337 GBP
As of November 6, 2026
Save £3,905 GBP (54%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £7,242 GBP at NZ Jewellers · As of November 5, 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 I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 5241008507. Listed at 17 retailers as of November 5, 2026, with prices from £3,337 to £7,242, a £3,905 spread on the same certified stone. NZ Jewellers lists it at £7,242. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.50
Carat
I
Colour
SI2
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.83°
Pavilion angle53.91°
OriginNatural
Grading LabGIA
CertificateGIA 5241008507
Dimensions7.62 × 5.91 × 4.13 mm
L/W Ratio1.29
Culet sizeNone
Key to symbols
Feather
Top View
7.62 mm5.91 mm1.50 ctI / SI2
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5241008507
Side View
Table 67.0%Crown 36.83°Girdle: THN-STKPavilion 53.91°Culet: NoneDepth 69.8%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: £4,182 GBP|Low: £3,337 GBP|High: £6,457 GBP|Avg: £4,433 GBP|-1.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 7, 2026
Retailer 6£3,337 GBP
Retailer 2£3,366 GBP
Retailer 7£3,997 GBP
Retailer 1£4,182 GBP
Retailer 3£4,201 GBP
Retailer 4£4,705 GBP
Retailer 5£6,362 GBP

29 data points across 7 retailers

17 retailers£3,337 GBP to £7,242 GBP

A
Cheapest Retailer
-
£3,337 GBP
A
Retailer 2
-
£3,366 GBP
View
A
Retailer 3
-
£3,664 GBP
View
A
Retailer 4
-
£3,777 GBP
View
Retailer 5
-
£3,802 GBP
View
Price last confirmed 11 days ago
B+
Retailer 6
-
£3,997 GBP
View
Final sale: no returns
B+
Retailer 7
-
£4,182 GBP
View
B+
Retailer 8
-
£4,201 GBP
View
B+
Retailer 9
-
£4,296 GBP
View
B+
Retailer 10
-
£4,330 GBP
View
Retailer 11
-
£4,330 GBP
View
Price last confirmed 9 days ago
B+
Retailer 12
-
£4,330 GBP
View
B+
Retailer 13
-
£4,446 GBP
View
B+
Retailer 14
-
£4,705 GBP
View
B+
Retailer 15
-
£4,996 GBP
View
B
Retailer 16
-
£6,362 GBP
View
Most Expensive
B
NZ Jewellers
00fd1fdc-4ea6-46a2-8f59-2f80fa684701 · Nov 5
£7,242 GBP
$9,694 USD
View
16 more retailers have this diamond
Prices start from £3,337 GBPSave up to £3,905 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.

A
1.50ct Radiant
£3,337 GBP