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1.23ct J VS1 Round Natural Diamond

EX • J/VS1 • IGI 732588697

Shape and cutting style on the report: Round brilliant

Certificate IGI 732588697

Diamond specifications and retailer prices

From £1,227 GBP
As of November 6, 2026
Save £2,376 GBP (66%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £3,604 GBP at NZ Jewellers · As of November 2, 2026
View at NZ Jewellers

About this 1.23ct natural round diamond

This 1.23ct natural round sits in the classic one-carat band, graded J colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI 732588697. Listed at 11 retailers as of November 2, 2026, with prices from £1,227 to £3,604, a £2,376 spread on the same certified stone. NZ Jewellers lists it at £3,604. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.23
Carat
J
Colour
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
Crown angle32.7°
Pavilion angle40.8°
OriginNatural
Grading LabIGI
CertificateIGI 732588697
Dimensions6.88 × 6.94 × 4.15 mm
L/W Ratio1.01
Girdle conditionFaceted
Top View
6.88 mm6.94 mm1.23 ctJ / VS1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
CertificateIGI 732588697
Side View
Table 60.0%Crown 32.7°Girdle: MED-STKPavilion 40.8°CuletDepth 60.0%

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 6
Current: £1,227 GBP|Low: £1,227 GBP|High: £2,619 GBP|Avg: £1,711 GBP|-2.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 1£1,227 GBP
Retailer 7£1,363 GBP
Retailer 2£1,375 GBP
Retailer 8£1,545 GBP
Retailer 6£1,705 GBP
Retailer 4£1,802 GBP
Retailer 3£2,099 GBP
Retailer 5£2,581 GBP

41 data points across 8 retailers

11 retailers£1,227 GBP to £3,604 GBP

A
Cheapest Retailer
-
£1,227 GBP
A
Retailer 2
-
£1,363 GBP
View
Final sale: no returns
A
Retailer 3
-
£1,375 GBP
View
A
Retailer 4
-
£1,477 GBP
View
B+
Retailer 5
-
£1,545 GBP
View
B+
Retailer 6
-
£1,704 GBP
View
B+
Retailer 7
-
£1,705 GBP
View
A
Retailer 8
-
£1,802 GBP
View
B+
Retailer 9
-
£2,099 GBP
View
B
Retailer 10
-
£2,581 GBP
View
Most Expensive
B
NZ Jewellers
58690c0d-85d6-4540-95cb-079b6cdebe28 · Nov 2
£3,604 GBP
$4,850 USD
View
10 more retailers have this diamond
Prices start from £1,227 GBPSave up to £2,376 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
1.23ct Round
£1,227 GBP