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Radiant|Natural|GIA

1.50ct J SI2 Radiant Natural Diamond

ID • J/SI2 • GIA 7551251473

Certificate GIA 7551251473

Diamond specifications and retailer prices

From £1,758 GBP
HK$18,400 HKD
As of November 1, 2026
Save £2,143 GBP (55%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £4,064 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 SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 7551251473. Listed at 17 retailers as of November 1, 2026, with a 122% 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
SI2
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 7551251473
Dimensions7.39 × 5.83 × 4.14 mm
L/W Ratio1.27
Girdle conditionPolished
Culet sizeNone
Key to symbols
Crystal, Feather, Cloud, Needle, Indented Natural
Top View
7.39 mm5.83 mm1.50 ctJ / SI2
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 7551251473
Side View
Table 68.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 71.1%

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 1
Current: £1,886 GBP|Low: £1,739 GBP|High: £4,059 GBP|Avg: £2,421 GBP|-4.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 1, 2026
Retailer 5£1,758 GBP
Retailer 1£1,886 GBP
Retailer 2£2,101 GBP
Retailer 7£2,152 GBP
Retailer 4£2,417 GBP
Retailer 9£2,439 GBP
Retailer 10£2,444 GBP
Retailer 8£2,515 GBP
Retailer 6£2,730 GBP
Retailer 3£3,900 GBP

34 data points across 10 retailers

17 retailers£1,758 GBP to £3,900 GBP

A
Cheapest Retailer
-
£1,758 GBP
HK$18,400 HKD
A
Retailer 2
-
£1,886 GBP
₹240,727 INR
View
A
Retailer 3
-
£2,101 GBP
SGD 3,805 SGD
View
A
Retailer 4
-
£2,152 GBP
$2,884 USD
View
Final sale: no returns
A
Retailer 5
-
£2,224 GBP
$2,980 USD
View
Retailer 6
-
£2,332 GBP
$3,125 USD
View
Price last confirmed 14 days ago
B+
Retailer 7
-
£2,366 GBP
A$4,878 AUD
View
Retailer 8
-
£2,387 GBP
$3,198 USD
View
Price last confirmed 16 days ago
A
Retailer 9
-
£2,417 GBP
View
A
Retailer 10
-
£2,439 GBP
$3,268 USD
View
A
Retailer 11
-
£2,444 GBP
SGD 4,425 SGD
View
Retailer 12
-
£2,479 GBP
$3,321 USD
View
Price last confirmed 15 days ago
A
Retailer 13
-
£2,515 GBP
$3,370 USD
View
Retailer 14
-
£2,691 GBP
$3,606 USD
View
Price last confirmed 13 days ago
A
Retailer 15
-
£2,730 GBP
€3,484 EUR
View
B
Retailer 16
-
£3,900 GBP
View
Most Expensive
NZ Jewellers
658d74bd-d713-4b2e-b756-d3b357c6c59c · Oct 17
£4,064 GBP
$5,445 USD
View
Price last confirmed 14 days ago
16 more retailers have this diamond
Prices start from £1,758 GBPSave up to £2,143 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
£1,758 GBP