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Marquise|Natural|GIA

1.22ct I SI1 Marquise Natural Diamond

ID • I/SI1 • GIA 6541811063

Certificate GIA 6541811063

Diamond specifications and retailer prices

From £3,979 GBP
As of November 6, 2026
Save £2,853 GBP (42%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: £6,833 GBP at MOH London · As of November 4, 2026
View at MOH London

About this 1.22ct natural marquise diamond

This 1.22ct natural marquise sits in the classic one-carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6541811063. Listed at 6 retailers as of November 4, 2026, with prices from £3,979 to £6,833, a £2,853 spread on the same certified stone. MOH London lists it at £6,833. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.22
Carat
I
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 6541811063
Dimensions11.70 × 5.38 × 3.40 mm
L/W Ratio2.17
Top View
11.70 mm5.38 mm1.22 ctI / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceMedium
CertificateGIA 6541811063
Side View
Table 59.0%CrownGirdle: MED-STKPavilionCulet: NoneDepth 63.1%

Caratlytics Score

How it works →
B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: £6,833 GBP|Low: £3,979 GBP|High: £6,933 GBP|Avg: £5,101 GBP|-1.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 6, 2026
Retailer 6£3,979 GBP
Retailer 2£4,417 GBP
Retailer 5£4,621 GBP
Retailer 4£5,059 GBP
Retailer 3£5,674 GBP
MOH London£6,833 GBP

38 data points across 6 retailers

6 retailers£3,979 GBP to £6,833 GBP

B
Cheapest Retailer
-
£3,979 GBP
B
Retailer 2
-
£4,417 GBP
View
Retailer 3
-
£4,621 GBP
View
Price last confirmed 34 days ago
B
Retailer 4
-
£5,059 GBP
View
B
Retailer 5
-
£5,674 GBP
View
Most Expensive
B
MOH London
66323A2FF · Nov 4
£6,833 GBP
View
5 more retailers have this diamond
Prices start from £3,979 GBPSave up to £2,853 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
1.22ct Marquise
£3,979 GBP