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Round|Natural|GIA

1.53ct J SI1 Round Natural Diamond

EX • J/SI1 • GIA 2526342497

Certificate GIA 2526342497

Diamond specifications and retailer prices

From £3,950 GBP
As of November 4, 2026
Save £4,412 GBP (53%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £8,362 GBP at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.53ct natural round diamond

This 1.53ct natural round 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 and certified by GIA 2526342497. Listed at 15 retailers as of November 4, 2026, with prices from £3,950 to £8,362, a £4,412 spread on the same certified stone. NZ Jewellers lists it at £8,362. 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

1.53
Carat
J
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
Crown angle32.5°
Pavilion angle41.6°
OriginNatural
Grading LabGIA
CertificateGIA 2526342497
Dimensions7.35 × 7.30 × 4.61 mm
L/W Ratio1.01
Star length50%
Top View
7.35 mm7.30 mm1.53 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 2526342497
Side View
Table 56.0%Crown 32.5°Girdle: Slightly ThickPavilion 41.6°Culet: NoneDepth 62.9%

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 4
Current: £5,939 GBP|Low: £3,950 GBP|High: £7,455 GBP|Avg: £5,359 GBP|-1.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 6£3,950 GBP
Retailer 7£4,182 GBP
Retailer 2£4,717 GBP
Retailer 8£4,903 GBP
Retailer 4£5,115 GBP
Retailer 1£5,939 GBP
Retailer 3£6,101 GBP
Retailer 5£7,347 GBP

38 data points across 8 retailers

15 retailers£3,950 GBP to £8,362 GBP

B+
Cheapest Retailer
-
£3,950 GBP
B
Retailer 2
-
£4,182 GBP
View
Final sale: no returns
B+
Retailer 3
-
£4,220 GBP
View
Retailer 4
-
£4,530 GBP
View
Price last confirmed 8 days ago
B
Retailer 5
-
£4,530 GBP
View
B
Retailer 6
-
£4,530 GBP
View
B
Retailer 7
-
£4,717 GBP
View
Retailer 8
-
£4,903 GBP
View
Price last confirmed 33 days ago
B
Retailer 9
-
£5,115 GBP
View
B
Retailer 10
-
£5,227 GBP
View
Retailer 11
-
£5,512 GBP
View
Price last confirmed 14 days ago
B
Retailer 12
-
£5,939 GBP
View
B
Retailer 13
-
£6,101 GBP
View
B
Retailer 14
-
£7,347 GBP
View
Most Expensive
B
NZ Jewellers
1b6aec2e-6dfb-486c-8d93-cc51ed922fc8 · Nov 5
£8,362 GBP
$11,255 USD
View
14 more retailers have this diamond
Prices start from £3,950 GBPSave up to £4,412 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+
1.53ct Round
£3,950 GBP