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Marquise|Natural|GIA

1.21ct F SI1 Marquise Natural Diamond

GD • F/SI1 • GIA 5546366314

Certificate GIA 5546366314

Diamond specifications and retailer prices

From £3,952 GBP
As of November 5, 2026
Save £1,208 GBP (23%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: £5,161 GBP at Cape Diamonds · As of November 5, 2026
View at Cape Diamonds

About this 1.21ct natural marquise diamond

This 1.21ct natural marquise sits in the classic one-carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 5546366314. Listed at 7 retailers as of November 5, 2026, with prices from £3,952 to £5,161, a £1,208 spread on the same certified stone. Cape Diamonds lists it at £5,161. 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
F
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryExcellent
FluorescenceStrong
Crown angle42.85°
Pavilion angle42.39°
OriginNatural
Grading LabGIA
CertificateGIA 5546366314
Dimensions9.98 × 5.43 × 3.68 mm
L/W Ratio1.84
Top View
9.98 mm5.43 mm1.21 ctF / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceStrong
CertificateGIA 5546366314
Side View
Table 64.0%Crown 42.85°Girdle: THN-VTKPavilion 42.39°Culet: NoneDepth 67.7%

Caratlytics Score

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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 5
Current: £5,161 GBP|Low: £3,688 GBP|High: £5,368 GBP|Avg: £4,502 GBP|-3.9%
Cape Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 5, 2026
Retailer 5£3,688 GBP
Retailer 3£3,952 GBP
Retailer 2£4,100 GBP
Retailer 10£4,321 GBP
Retailer 6£4,443 GBP
Retailer 7£4,501 GBP
Retailer 8£4,503 GBP
Retailer 4£4,779 GBP
Retailer 9£4,904 GBP
Cape Diamonds£5,161 GBP

8 data points across 10 retailers

7 retailers£3,952 GBP to £5,161 GBP

Retailer 1
-
£3,688 GBP
Price last confirmed 11 days ago
B
Retailer 2
-
£3,952 GBP
View
B
Retailer 3
-
£4,100 GBP
View
Retailer 4
-
£4,443 GBP
View
Price last confirmed 44 days ago
B
Retailer 5
-
£4,501 GBP
View
Retailer 6
-
£4,779 GBP
View
Price last confirmed 10 days ago
Most Expensive
C
Cape Diamonds
cert_5546366314 · Nov 5
£5,161 GBP
ZAR 111,588 ZAR
View
6 more retailers have this diamond
Prices start from £3,952 GBPSave up to £1,208 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
£3,952 GBP