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1.53ct I SI1 Round Natural Diamond

EX • I/SI1 • IGI 670479108

Shape and cutting style on the report: Round brilliant

Certificate IGI 670479108

Diamond specifications and retailer prices

From £3,452 GBP
As of November 5, 2026
Save £3,168 GBP (48%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £6,621 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 I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI 670479108. Listed at 14 retailers as of November 5, 2026, with prices from £3,452 to £6,621, a £3,168 spread on the same certified stone. NZ Jewellers lists it at £6,621. 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 angle32.9°
Pavilion angle41.1°
OriginNatural
Grading LabIGI
CertificateIGI 670479108
Dimensions7.55 × 7.51 × 4.46 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Top View
7.55 mm7.51 mm1.53 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 670479108
Side View
Table 61.0%Crown 32.9°Girdle: MediumPavilion 41.1°Culet: NoneDepth 59.2%

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 5
Current: £3,952 GBP|Low: £3,654 GBP|High: £6,227 GBP|Avg: £4,432 GBP|-1.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 6£3,654 GBP
Retailer 1£3,952 GBP
Retailer 7£3,958 GBP
Retailer 2£3,962 GBP
Retailer 3£4,208 GBP
Retailer 4£4,829 GBP
Retailer 5£6,137 GBP

41 data points across 7 retailers

14 retailers£3,452 GBP to £6,621 GBP

A
Cheapest Retailer
-
£3,452 GBP
B+
Retailer 2
-
£3,654 GBP
View
Final sale: no returns
A
Retailer 3
-
£3,713 GBP
View
A
Retailer 4
-
£3,952 GBP
View
Retailer 5
-
£3,958 GBP
View
Price last confirmed 8 days ago
B+
Retailer 6
-
£3,958 GBP
View
B+
Retailer 7
-
£3,958 GBP
View
A
Retailer 8
-
£3,962 GBP
View
B+
Retailer 9
-
£4,072 GBP
View
B+
Retailer 10
-
£4,208 GBP
View
B+
Retailer 11
-
£4,568 GBP
View
B+
Retailer 12
-
£4,829 GBP
View
B
Retailer 13
-
£6,137 GBP
View
Most Expensive
B
NZ Jewellers
8ae528ce-c06f-4288-b205-db8473f29dd4 · Nov 5
£6,621 GBP
$8,862 USD
View
13 more retailers have this diamond
Prices start from £3,452 GBPSave up to £3,168 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
£3,452 GBP