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Radiant|Natural|GIA

1.50ct J SI2 Radiant Natural Diamond

EX • J/SI2 • GIA 5553842991

Certificate GIA 5553842991

Diamond specifications and retailer prices

From £2,035 GBP
HK$21,300 HKD
As of October 31, 2026
Save £2,469 GBP (55%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £4,692 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 5553842991. Listed at 18 retailers as of October 31, 2026, with a 121% 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
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 5553842991
Dimensions7.42 × 5.72 × 3.99 mm
L/W Ratio1.30
Girdle conditionPolished
Culet sizeNone
Key to symbols
Knot, Feather, Crystal, Cavity, Needle, Natural
Top View
7.42 mm5.72 mm1.50 ctJ / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 5553842991
Side View
Table 70.0%CrownGirdle: THK-VTKPavilionCulet: 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: Oct 31
Current: £4,692 GBP|Low: £2,016 GBP|High: £4,787 GBP|Avg: £2,953 GBP|-2.0%
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
November 1, 2026
Retailer 10£2,035 GBP
Retailer 9£2,167 GBP
Retailer 6£2,420 GBP
Retailer 13£2,485 GBP
Retailer 12£2,671 GBP
Retailer 3£2,694 GBP
Retailer 7£2,748 GBP
Retailer 4£2,802 GBP
Retailer 8£2,815 GBP
Retailer 5£2,825 GBP
Retailer 15£2,844 GBP
Retailer 14£3,108 GBP
Retailer 11£3,153 GBP
Retailer 2£4,504 GBP
NZ Jewellers£4,692 GBP

25 data points across 15 retailers

18 retailers£2,035 GBP to £4,504 GBP

A
Cheapest Retailer
-
£2,035 GBP
HK$21,300 HKD
A
Retailer 2
-
£2,167 GBP
₹276,588 INR
View
A
Retailer 3
-
£2,420 GBP
SGD 4,381 SGD
View
A
Retailer 4
-
£2,485 GBP
$3,330 USD
View
Final sale: no returns
B+
Retailer 5
-
£2,538 GBP
$3,401 USD
View
A
Retailer 6
-
£2,671 GBP
View
Retailer 7
-
£2,694 GBP
$3,609 USD
View
Price last confirmed 14 days ago
B+
Retailer 8
-
£2,696 GBP
A$5,558 AUD
View
Retailer 9
-
£2,748 GBP
$3,682 USD
View
Price last confirmed 16 days ago
B+
Retailer 10
-
£2,802 GBP
$3,754 USD
View
B+
Retailer 11
-
£2,815 GBP
View
B+
Retailer 12
-
£2,825 GBP
SGD 5,116 SGD
View
B+
Retailer 13
-
£2,844 GBP
$3,810 USD
View
Retailer 14
-
£2,853 GBP
$3,823 USD
View
Price last confirmed 15 days ago
Retailer 15
-
£3,108 GBP
$4,164 USD
View
Price last confirmed 13 days ago
B+
Retailer 16
-
£3,153 GBP
€4,023 EUR
View
B
Retailer 17
-
£4,504 GBP
View
Most Expensive
NZ Jewellers
e1ade95d-5f3e-4c6c-a1b9-4c83c4ad66e6 · Oct 17
£4,692 GBP
$6,287 USD
View
Price last confirmed 14 days ago
17 more retailers have this diamond
Prices start from £2,035 GBPSave up to £2,469 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
£2,035 GBP