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Round|Natural|GIA

1.23ct F FL Round Natural Diamond

EX • F/FL • GIA 1528916645

Certificate GIA 1528916645

Diamond specifications and retailer prices

From £4,174 GBP
As of November 5, 2026
Save £4,931 GBP (54%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £9,105 GBP at NZ Jewellers · As of November 5, 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 F colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by GIA 1528916645. Listed at 17 retailers as of November 5, 2026, with prices from £4,174 to £9,105, a £4,931 spread on the same certified stone. NZ Jewellers lists it at £9,105. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.23
Carat
F
Colour
FL
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
Crown angle35.5°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 1528916645
Dimensions6.81 × 6.78 × 4.26 mm
L/W Ratio1.00
Girdle conditionFaceted
Top View
6.81 mm6.78 mm1.23 ctF / FL
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 1528916645
Side View
Table 58.0%Crown 35.5°Girdle: STK-STKPavilion 41.2°Culet: NoneDepth 62.9%

Caratlytics Score

How it works →
A+
Exceptional
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: £5,049 GBP|Low: £4,174 GBP|High: £7,668 GBP|Avg: £5,471 GBP|-1.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 5£4,174 GBP
Retailer 8£4,748 GBP
Retailer 4£4,847 GBP
Retailer 7£5,034 GBP
Retailer 1£5,049 GBP
Retailer 9£5,283 GBP
Retailer 2£5,733 GBP
Retailer 3£6,642 GBP
Retailer 6£7,567 GBP

24 data points across 9 retailers

17 retailers£4,174 GBP to £9,105 GBP

A+
Cheapest Retailer
-
£4,174 GBP
A
Retailer 2
-
£4,556 GBP
View
A
Retailer 3
-
£4,748 GBP
View
A
Retailer 4
-
£4,847 GBP
View
Retailer 5
-
£4,902 GBP
View
Price last confirmed 75 days ago
Retailer 6
-
£5,026 GBP
View
Price last confirmed 8 days ago
A
Retailer 7
-
£5,034 GBP
View
A
Retailer 8
-
£5,049 GBP
View
Retailer 9
-
£5,283 GBP
View
Price last confirmed 15 days ago
A
Retailer 10
-
£5,444 GBP
View
A
Retailer 11
-
£5,528 GBP
View
A
Retailer 12
-
£5,733 GBP
View
B+
Retailer 13
-
£5,887 GBP
View
B+
Retailer 14
-
£6,282 GBP
View
B+
Retailer 15
-
£6,642 GBP
View
B+
Retailer 16
-
£7,567 GBP
View
Most Expensive
B
NZ Jewellers
d8665501-08d1-441f-aed6-7ce407659b7f · Nov 5
£9,105 GBP
$12,255 USD
View
16 more retailers have this diamond
Prices start from £4,174 GBPSave up to £4,931 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
£4,174 GBP