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Marquise|Natural|GIA

1.21ct I SI1 Marquise Natural Diamond

EX • I/SI1 • GIA 2241069318

Certificate GIA 2241069318

Diamond specifications and retailer prices

From £1,943 GBP
As of November 5, 2026
Save £1,913 GBP (50%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £3,857 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 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 2241069318. Listed at 11 retailers as of November 5, 2026, with prices from £1,943 to £3,857, a £1,913 spread on the same certified stone. Wholesale Diamonds Direct lists it at £3,857. 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

1.21
Carat
I
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle39.79°
Pavilion angle40.2°
OriginNatural
Grading LabGIA
CertificateGIA 2241069318
Dimensions10.52 × 5.55 × 3.56 mm
L/W Ratio1.90
Culet sizeNone
Top View
10.52 mm5.55 mm1.21 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 2241069318
Side View
Table 58.0%Crown 39.79°Girdle: STK-THKPavilion 40.2°Culet: NoneDepth 64.1%

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: £2,318 GBP|Low: £1,933 GBP|High: £4,009 GBP|Avg: £2,786 GBP|-4.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Wholesale Diamonds Direct
November 6, 2026
Retailer 5£1,943 GBP
Retailer 6£2,150 GBP
Retailer 3£2,286 GBP
Retailer 1£2,318 GBP
Retailer 2£2,394 GBP
Retailer 10£2,589 GBP
Retailer 8£2,759 GBP
Retailer 9£2,817 GBP
Retailer 4£2,860 GBP
Retailer 7£3,627 GBP
Wholesale Diamonds Direct£3,857 GBP

28 data points across 11 retailers

11 retailers£1,943 GBP to £3,857 GBP

A
Cheapest Retailer
-
£1,943 GBP
A
Retailer 2
-
£2,150 GBP
View
A
Retailer 3
-
£2,286 GBP
View
A
Retailer 4
-
£2,318 GBP
View
B+
Retailer 5
-
£2,394 GBP
View
B+
Retailer 6
-
£2,589 GBP
View
B+
Retailer 7
-
£2,759 GBP
View
B+
Retailer 8
-
£2,817 GBP
View
B+
Retailer 9
-
£2,860 GBP
View
B
Retailer 10
-
£3,627 GBP
View
Most Expensive
B
Wholesale Diamonds Direct
643534456 · Nov 6
£3,857 GBP
$5,162 USD
View
10 more retailers have this diamond
Prices start from £1,943 GBPSave up to £1,913 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
£1,943 GBP