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Marquise|Natural|GIA

1.23ct F SI2 Marquise Natural Diamond

VG • F/SI2 • GIA 6552471563

Certificate GIA 6552471563

Diamond specifications and retailer prices

From £3,665 GBP
As of November 5, 2026
Save £4,094 GBP (53%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £7,759 GBP at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.23ct natural marquise diamond

This 1.23ct natural marquise sits in the classic one-carat band, graded F colour (colourless) and SI2 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 6552471563. Listed at 16 retailers as of November 5, 2026, with prices from £3,665 to £7,759, a £4,094 spread on the same certified stone. NZ Jewellers lists it at £7,759. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.23
Carat
F
Colour
SI2
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle40.8°
Pavilion angle40.7°
OriginNatural
Grading LabGIA
CertificateGIA 6552471563
Dimensions10.30 × 5.55 × 3.58 mm
L/W Ratio1.86
Culet sizeNone
Top View
10.30 mm5.55 mm1.23 ctF / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6552471563
Side View
Table 58.0%Crown 40.8°Girdle: THK-VTKPavilion 40.7°Culet: NoneDepth 64.4%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: £4,562 GBP|Low: £3,233 GBP|High: £6,917 GBP|Avg: £4,699 GBP|-1.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 5£3,880 GBP
Retailer 6£4,203 GBP
Retailer 7£4,203 GBP
Retailer 3£4,406 GBP
Retailer 1£4,562 GBP
Retailer 2£4,762 GBP
Retailer 4£6,816 GBP

41 data points across 7 retailers

16 retailers£3,665 GBP to £7,759 GBP

B
Cheapest Retailer
-
£3,665 GBP
B+
Retailer 2
-
£3,880 GBP
View
Final sale: no returns
B
Retailer 3
-
£3,912 GBP
View
Retailer 4
-
£4,203 GBP
View
Price last confirmed 9 days ago
B
Retailer 5
-
£4,203 GBP
View
B
Retailer 6
-
£4,203 GBP
View
B
Retailer 7
-
£4,406 GBP
View
B
Retailer 8
-
£4,562 GBP
View
B
Retailer 9
-
£4,692 GBP
View
B
Retailer 10
-
£4,692 GBP
View
B
Retailer 11
-
£4,762 GBP
View
B
Retailer 12
-
£4,849 GBP
View
B
Retailer 13
-
£4,849 GBP
View
Retailer 14
-
£5,116 GBP
View
Price last confirmed 15 days ago
B
Retailer 15
-
£6,816 GBP
View
Most Expensive
B
NZ Jewellers
dfd94546-a3c4-496f-94b6-dbfbee4d9177 · Nov 5
£7,759 GBP
$10,386 USD
View
15 more retailers have this diamond
Prices start from £3,665 GBPSave up to £4,094 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.

B+
1.23ct Marquise
£3,665 GBP