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Marquise|Natural|GIA

1.21ct F SI2 Marquise Natural Diamond

VG • F/SI2 • GIA 1553370719

Certificate GIA 1553370719

Diamond specifications and retailer prices

From £1,804 GBP
As of November 5, 2026
Save £1,798 GBP (50%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: £3,602 GBP at Wholesale Diamonds Direct · As of November 6, 2026
View at Wholesale Diamonds Direct

About this 1.21ct natural marquise diamond

This 1.21ct 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 1553370719. Listed at 8 retailers as of November 5, 2026, with prices from £1,804 to £3,602, a £1,798 spread on the same certified stone. Wholesale Diamonds Direct lists it at £3,602. 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
SI2
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.88°
Pavilion angle41.4°
OriginNatural
Grading LabGIA
CertificateGIA 1553370719
Dimensions10.18 × 5.48 × 3.59 mm
L/W Ratio1.86
Culet sizeNone
Top View
10.18 mm5.48 mm1.21 ctF / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1553370719
Side View
Table 59.0%Crown 37.88°Girdle: THK-VTKPavilion 41.4°Culet: NoneDepth 65.5%

Caratlytics Score

How it works →
A
Excellent
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: £2,152 GBP|Low: £1,795 GBP|High: £3,970 GBP|Avg: £2,737 GBP|-9.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Wholesale Diamonds Direct
November 6, 2026
Retailer 3£1,804 GBP
Retailer 7£1,821 GBP
Retailer 1£2,152 GBP
Retailer 6£2,359 GBP
Retailer 5£2,404 GBP
Retailer 4£2,640 GBP
Retailer 2£2,654 GBP
Retailer 9£3,100 GBP
Wholesale Diamonds Direct£3,602 GBP
Retailer 8£3,694 GBP

28 data points across 10 retailers

8 retailers£1,804 GBP to £3,602 GBP

A
Cheapest Retailer
-
£1,804 GBP
A
Retailer 2
-
£2,152 GBP
View
A
Retailer 3
-
£2,359 GBP
View
A
Retailer 4
-
£2,404 GBP
View
B+
Retailer 5
-
£2,640 GBP
View
B+
Retailer 6
-
£2,654 GBP
View
B+
Retailer 7
-
£3,100 GBP
View
Most Expensive
B
Wholesale Diamonds Direct
285862147 · Nov 6
£3,602 GBP
$4,822 USD
View
7 more retailers have this diamond
Prices start from £1,804 GBPSave up to £1,798 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
1.21ct Marquise
£1,804 GBP