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Round|Natural|GIA

1.53ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 1232503296

Certificate GIA 1232503296

Diamond specifications and retailer prices

From £4,098 GBP
As of November 1, 2026
Save £3,440 GBP (46%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: £9,101 GBP at NZ Jewellers · As of September 28, 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 I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1232503296. Listed at 21 retailers as of November 1, 2026, with a 84% 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

1.53
Carat
I
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 1232503296
Dimensions7.34 × 7.29 × 4.53 mm
L/W Ratio1.01
Star length50%
Lower girdle75%
Culet sizeNone
Key to symbols
Feather, Crystal, Cloud
Top View
7.34 mm7.29 mm1.53 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1232503296
Side View
Table 59.0%Crown 36°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 62.1%

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: £5,115 GBP|Low: £4,098 GBP|High: £7,675 GBP|Avg: £5,232 GBP|+1.5%
Retailer 1
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
Retailer 17
Retailer 18
November 6, 2026
Retailer 6£4,098 GBP
Retailer 2£4,285 GBP
Retailer 8£4,535 GBP
Retailer 13£4,536 GBP
Retailer 4£4,561 GBP
Retailer 5£4,836 GBP
Retailer 9£4,886 GBP
Retailer 7£4,913 GBP
Retailer 15£4,989 GBP
Retailer 1£5,115 GBP
Retailer 17£5,263 GBP
Retailer 10£5,408 GBP
Retailer 16£5,431 GBP
Retailer 18£5,431 GBP
Retailer 3£5,611 GBP
Retailer 14£5,977 GBP
Retailer 11£6,617 GBP
Retailer 12£7,538 GBP

45 data points across 18 retailers

21 retailers£4,098 GBP to £7,538 GBP

A
Cheapest Retailer
-
£4,098 GBP
A
Retailer 2
-
£4,285 GBP
View
B+
Retailer 3
-
£4,535 GBP
View
Final sale: no returns
Retailer 4
-
£4,536 GBP
View
Price last confirmed 8 days ago
B+
Retailer 5
-
£4,561 GBP
View
B+
Retailer 6
-
£4,836 GBP
View
B+
Retailer 7
-
£4,886 GBP
View
B+
Retailer 8
-
£4,913 GBP
View
Retailer 9
-
£4,930 GBP
View
Price last confirmed 39 days ago
B+
Retailer 10
-
£4,989 GBP
View
B+
Retailer 11
-
£5,115 GBP
View
Retailer 12
-
£5,263 GBP
View
Price last confirmed 15 days ago
B+
Retailer 13
-
£5,408 GBP
View
B+
Retailer 14
-
£5,431 GBP
View
B+
Retailer 15
-
£5,431 GBP
View
B
Retailer 16
-
£5,611 GBP
View
Retailer 17
-
£5,688 GBP
View
Price last confirmed 38 days ago
Retailer 18
-
£5,977 GBP
View
Price last confirmed 14 days ago
B
Retailer 19
-
£6,617 GBP
View
B
Retailer 20
-
£7,538 GBP
View
Most Expensive
NZ Jewellers
31c363f7-2741-4b40-8324-1d435581678b · Sep 28
£9,101 GBP
$12,182 USD
View
Price last confirmed 39 days ago
20 more retailers have this diamond
Prices start from £4,098 GBPSave up to £3,440 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
1.53ct Round
£4,098 GBP