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Round|Natural|GIA

1.23ct J VS1 Round Natural Diamond

EX • J/VS1 • GIA 6562020686

Certificate GIA 6562020686

Diamond specifications and retailer prices

From £1,807 GBP
As of November 1, 2026
Save £2,239 GBP (55%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £4,289 GBP at NZ Jewellers · As of October 6, 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 GIA 6562020686. Listed at 17 retailers as of November 1, 2026, with a 124% 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
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle36°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 6562020686
Dimensions6.78 × 6.80 × 4.24 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizeNone
Top View
6.78 mm6.80 mm1.23 ctJ / VS1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6562020686
Side View
Table 57.0%Crown 36°Girdle: Slightly ThickPavilion 40.6°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: £2,233 GBP|Low: £1,721 GBP|High: £4,179 GBP|Avg: £2,562 GBP|-2.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 2, 2026
Retailer 11£1,807 GBP
Retailer 7£1,834 GBP
Retailer 3£2,214 GBP
Retailer 12£2,233 GBP
Retailer 1£2,233 GBP
Retailer 4£2,420 GBP
Retailer 6£2,491 GBP
Retailer 5£2,653 GBP
Retailer 2£2,688 GBP
Retailer 10£2,870 GBP
Retailer 9£2,973 GBP
Retailer 8£4,046 GBP

26 data points across 12 retailers

17 retailers£1,807 GBP to £4,046 GBP

A
Cheapest Retailer
-
£1,807 GBP
A
Retailer 2
-
£1,834 GBP
View
B+
Retailer 3
-
£2,214 GBP
View
B+
Retailer 4
-
£2,233 GBP
View
B+
Retailer 5
-
£2,409 GBP
View
Retailer 6
-
£2,420 GBP
View
Price last confirmed 10 days ago
Retailer 7
-
£2,462 GBP
View
Price last confirmed 29 days ago
B+
Retailer 8
-
£2,491 GBP
View
Retailer 9
-
£2,579 GBP
View
Price last confirmed 38 days ago
Retailer 10
-
£2,629 GBP
View
Price last confirmed 30 days ago
B+
Retailer 11
-
£2,653 GBP
View
B+
Retailer 12
-
£2,688 GBP
View
Retailer 13
-
£2,840 GBP
View
Price last confirmed 33 days ago
B+
Retailer 14
-
£2,870 GBP
View
B+
Retailer 15
-
£2,973 GBP
View
B
Retailer 16
-
£4,046 GBP
View
Most Expensive
NZ Jewellers
e2e3921f-dce8-4e42-b8cf-3e37f4a58237 · Oct 6
£4,289 GBP
$5,773 USD
View
Price last confirmed 31 days ago
16 more retailers have this diamond
Prices start from £1,807 GBPSave up to £2,239 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
£1,807 GBP