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Marquise|Natural|GIA

1.21ct D SI1 Marquise Natural Diamond

GD • D/SI1 • GIA 5546223817

Certificate GIA 5546223817

Diamond specifications and retailer prices

From £4,591 GBP
As of November 4, 2026
Save £3,211 GBP (41%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £7,802 GBP at MOH London · As of November 2, 2026
View at MOH London

About this 1.21ct natural marquise diamond

This 1.21ct natural marquise sits in the classic one-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 5546223817. Listed at 15 retailers as of November 2, 2026, with prices from £4,591 to £7,802, a £3,211 spread on the same certified stone. MOH London lists it at £7,802. 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

1.21
Carat
D
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle43.44°
Pavilion angle39.93°
OriginNatural
Grading LabGIA
CertificateGIA 5546223817
Dimensions9.98 × 5.47 × 3.59 mm
L/W Ratio1.82
Top View
9.98 mm5.47 mm1.21 ctD / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5546223817
Side View
Table 60.0%Crown 43.44°Girdle: THK-VTKPavilion 39.93°Culet: NoneDepth 65.5%

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 4
Current: £7,802 GBP|Low: £5,008 GBP|High: £7,896 GBP|Avg: £6,012 GBP|-0.9%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 8£5,008 GBP
Retailer 2£5,137 GBP
Retailer 4£5,152 GBP
Retailer 7£5,266 GBP
Retailer 3£5,895 GBP
Retailer 5£6,620 GBP
Retailer 6£6,935 GBP
MOH London£7,802 GBP

34 data points across 8 retailers

15 retailers£4,591 GBP to £7,802 GBP

B
Cheapest Retailer
-
£4,591 GBP
B
Retailer 2
-
£4,698 GBP
View
B
Retailer 3
-
£4,732 GBP
View
B
Retailer 4
-
£5,008 GBP
View
Final sale: no returns
Retailer 5
-
£5,009 GBP
View
Price last confirmed 9 days ago
B
Retailer 6
-
£5,017 GBP
View
B
Retailer 7
-
£5,137 GBP
View
B
Retailer 8
-
£5,152 GBP
View
Retailer 9
-
£5,266 GBP
View
Price last confirmed 16 days ago
B
Retailer 10
-
£5,547 GBP
View
B
Retailer 11
-
£5,895 GBP
View
B
Retailer 12
-
£6,261 GBP
View
B
Retailer 13
-
£6,620 GBP
View
Retailer 14
-
£6,935 GBP
View
Price last confirmed 10 days ago
Most Expensive
B
MOH London
55942083B · Nov 2
£7,802 GBP
View
14 more retailers have this diamond
Prices start from £4,591 GBPSave up to £3,211 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
1.21ct Marquise
£4,591 GBP