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Round|Natural|GIA

1.23ct J VS2 Round Natural Diamond

EX • J/VS2 • GIA 1557769838

Certificate GIA 1557769838

Diamond specifications and retailer prices

From £1,641 GBP
As of November 1, 2026
Save £2,011 GBP (55%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £4,566 GBP at NZ Jewellers · As of October 30, 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 GIA 1557769838. Listed at 15 retailers as of November 1, 2026, with a 123% 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
FluorescenceMedium
Crown angle34°
Pavilion angle41.8°
OriginNatural
Grading LabGIA
CertificateGIA 1557769838
Dimensions6.87 × 6.84 × 4.28 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Feather, Needle
Top View
6.87 mm6.84 mm1.23 ctJ / VS2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 1557769838
Side View
Table 58.0%Crown 34°Girdle: MED-STKPavilion 41.8°Culet: NoneDepth 62.4%

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: £2,321 GBP|Low: £1,638 GBP|High: £3,696 GBP|Avg: £2,342 GBP|+1.4%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 2, 2026
Retailer 4£1,641 GBP
Retailer 8£1,732 GBP
Retailer 10£1,956 GBP
Retailer 7£2,132 GBP
Retailer 2£2,268 GBP
Retailer 1£2,321 GBP
Retailer 3£2,392 GBP
Retailer 9£2,456 GBP
Retailer 6£2,684 GBP
Retailer 5£3,653 GBP

36 data points across 10 retailers

15 retailers£1,641 GBP to £3,653 GBP

A
Cheapest Retailer
-
£1,641 GBP
A
Retailer 2
-
£1,956 GBP
View
B+
Retailer 3
-
£2,132 GBP
View
B+
Retailer 4
-
£2,184 GBP
View
Retailer 5
-
£2,184 GBP
View
Price last confirmed 8 days ago
Retailer 6
-
£2,268 GBP
View
Price last confirmed 8 days ago
B+
Retailer 7
-
£2,296 GBP
View
B+
Retailer 8
-
£2,321 GBP
View
B+
Retailer 9
-
£2,392 GBP
View
Retailer 10
-
£2,456 GBP
View
Price last confirmed 33 days ago
B+
Retailer 11
-
£2,479 GBP
View
B
Retailer 12
-
£2,520 GBP
View
B
Retailer 13
-
£2,684 GBP
View
B
Retailer 14
-
£3,653 GBP
View
Most Expensive
NZ Jewellers
1fa6b5cb-4984-4abe-b225-51e42daf8969 · Oct 30
£4,566 GBP
$6,146 USD
View
Price last confirmed 7 days ago
14 more retailers have this diamond
Prices start from £1,641 GBPSave up to £2,011 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
£1,641 GBP