Radiant|Natural|GIA

1.50ct J SI1 Radiant Natural Diamond

ID • J/SI1 • GIA 2546118660

Certificate GIA 2546118660

Diamond specifications and retailer prices

From £2,324 GBP
As of November 6, 2026
Save £2,743 GBP (54%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: £5,340 GBP at NZ Jewellers · As of October 17, 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 J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2546118660. Listed at 20 retailers as of November 6, 2026, with a 118% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
J
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2546118660
Dimensions7.50 × 5.78 × 3.93 mm
L/W Ratio1.30
Top View
7.50 mm5.78 mm1.50 ctJ / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2546118660
Side View
Table 66.0%CrownGirdle: ThickPavilionCulet: NoneDepth 68.0%

Caratlytics Score

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

Price History

Last verified: Nov 6
Current: £5,340 GBP|Low: £2,314 GBP|High: £5,340 GBP|Avg: £3,337 GBP
NZ Jewellers
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
November 7, 2026
Retailer 3£2,324 GBP
Retailer 11£2,448 GBP
Retailer 15£2,796 GBP
Retailer 5£2,811 GBP
Retailer 9£2,906 GBP
Retailer 12£2,928 GBP
Retailer 7£3,065 GBP
Retailer 10£3,085 GBP
Retailer 8£3,124 GBP
Retailer 4£3,156 GBP
Retailer 16£3,168 GBP
Retailer 13£3,426 GBP
Retailer 6£3,537 GBP
Retailer 14£3,718 GBP
Retailer 2£5,066 GBP
NZ Jewellers£5,340 GBP

27 data points across 16 retailers

20 retailers£2,324 GBP to £5,066 GBP

A
Cheapest Retailer
-
£2,324 GBP
A
Retailer 2
-
£2,448 GBP
View
A
Retailer 3
-
£2,796 GBP
View
A
Retailer 4
-
£2,811 GBP
View
Final sale: no returns
B+
Retailer 5
-
£2,906 GBP
View
B+
Retailer 6
-
£2,917 GBP
View
B+
Retailer 7
-
£2,928 GBP
View
Retailer 8
-
£3,065 GBP
View
Price last confirmed 20 days ago
B+
Retailer 9
-
£3,077 GBP
View
B+
Retailer 10
-
£3,085 GBP
View
Retailer 11
-
£3,124 GBP
View
Price last confirmed 22 days ago
Retailer 12
-
£3,124 GBP
View
Price last confirmed 22 days ago
B+
Retailer 13
-
£3,156 GBP
View
B+
Retailer 14
-
£3,168 GBP
View
Retailer 15
-
£3,370 GBP
View
Price last confirmed 34 days ago
B+
Retailer 16
-
£3,426 GBP
View
Retailer 17
-
£3,537 GBP
View
Price last confirmed 19 days ago
B+
Retailer 18
-
£3,718 GBP
View
B
Retailer 19
-
£5,066 GBP
View
Most Expensive
NZ Jewellers
0f92685b-5a49-416b-b35c-1f1e2a3ce145 · Oct 17
£5,340 GBP
$7,148 USD
View
Price last confirmed 20 days ago
19 more retailers have this diamond
Prices start from £2,324 GBPSave up to £2,743 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
£2,324 GBP