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Round|Natural|IGI

1.23ct J VS2 Round Natural Diamond

EX • J/VS2 • IGI 627491809

Shape and cutting style on the report: Round brilliant

Certificate IGI 627491809

Diamond specifications and retailer prices

From £1,412 GBP
As of November 5, 2026
Save £1,319 GBP (48%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £3,395 GBP at NZ Jewellers · As of October 20, 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 VS2 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI 627491809. Listed at 13 retailers as of November 4, 2026, with a 93% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
VS2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle41°
OriginNatural
Grading LabIGI
CertificateIGI 627491809
Dimensions6.84 × 6.90 × 4.23 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
IDEAL CUT ROUND BRILLIANT
Top View
6.84 mm6.90 mm1.23 ctJ / VS2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 627491809
Side View
Table 58.0%Crown 35°Girdle: MediumPavilion 41°Culet: NoneDepth 61.6%

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: £3,395 GBP|Low: £1,412 GBP|High: £3,395 GBP|Avg: £1,957 GBP|+2.5%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 5, 2026
Retailer 7£1,412 GBP
Retailer 8£1,485 GBP
Retailer 6£1,583 GBP
Retailer 9£1,583 GBP
Retailer 10£1,583 GBP
Retailer 4£1,718 GBP
Retailer 3£1,908 GBP
Retailer 2£2,119 GBP
Retailer 5£2,731 GBP
NZ Jewellers£3,395 GBP

28 data points across 10 retailers

13 retailers£1,412 GBP to £2,731 GBP

A
Cheapest Retailer
-
£1,412 GBP
A
Retailer 2
-
£1,485 GBP
View
A
Retailer 3
-
£1,583 GBP
View
Retailer 4
-
£1,583 GBP
View
Price last confirmed 44 days ago
Retailer 5
-
£1,583 GBP
View
Price last confirmed 15 days ago
Retailer 6
-
£1,623 GBP
View
Price last confirmed 21 days ago
A
Retailer 7
-
£1,718 GBP
View
Retailer 8
-
£1,827 GBP
View
Price last confirmed 45 days ago
A
Retailer 9
-
£1,908 GBP
View
B+
Retailer 10
-
£2,119 GBP
View
B+
Retailer 11
-
£2,731 GBP
View
Retailer 12
-
£3,311 GBP
View
Price last confirmed 46 days ago
Most Expensive
NZ Jewellers
79d29f6c-76ef-42e8-a0a7-119b8016bf4a · Oct 20
£3,395 GBP
$4,569 USD
View
Price last confirmed 16 days ago
12 more retailers have this diamond
Prices start from £1,412 GBPSave up to £1,319 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
£1,412 GBP