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Marquise|Natural|GIA

1.21ct I SI2 Marquise Natural Diamond

EX • I/SI2 • GIA 6551248081

Certificate GIA 6551248081

Diamond specifications and retailer prices

From £2,068 GBP
As of November 4, 2026
Save £1,630 GBP (44%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £3,698 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 SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6551248081. Listed at 12 retailers as of November 4, 2026, with prices from £2,068 to £3,698, a £1,630 spread on the same certified stone. Wholesale Diamonds Direct lists it at £3,698. 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
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle39.8°
Pavilion angle38.4°
OriginNatural
Grading LabGIA
CertificateGIA 6551248081
Dimensions11.26 × 5.48 × 3.32 mm
L/W Ratio2.05
Top View
11.26 mm5.48 mm1.21 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6551248081
Side View
Table 58.0%Crown 39.8°Girdle: MED-THKPavilion 38.4°Culet: NoneDepth 60.5%

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 4
Current: £2,277 GBP|Low: £2,068 GBP|High: £4,000 GBP|Avg: £2,651 GBP|+2.9%
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 6£2,068 GBP
Retailer 5£2,118 GBP
Retailer 7£2,230 GBP
Retailer 1£2,277 GBP
Retailer 4£2,415 GBP
Retailer 2£2,491 GBP
Retailer 8£2,652 GBP
Retailer 9£2,659 GBP
Retailer 10£2,722 GBP
Retailer 3£2,749 GBP
Wholesale Diamonds Direct£3,698 GBP

41 data points across 11 retailers

12 retailers£2,068 GBP to £3,698 GBP

A
Cheapest Retailer
-
£2,068 GBP
A
Retailer 2
-
£2,118 GBP
View
A
Retailer 3
-
£2,230 GBP
View
B+
Retailer 4
-
£2,277 GBP
View
A
Retailer 5
-
£2,415 GBP
View
B+
Retailer 6
-
£2,491 GBP
View
B+
Retailer 7
-
£2,652 GBP
View
B+
Retailer 8
-
£2,659 GBP
View
B+
Retailer 9
-
£2,722 GBP
View
B+
Retailer 10
-
£2,749 GBP
View
B
Retailer 11
-
£2,947 GBP
View
Most Expensive
B
Wholesale Diamonds Direct
378733586 · Nov 6
£3,698 GBP
$4,949 USD
View
11 more retailers have this diamond
Prices start from £2,068 GBPSave up to £1,630 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
£2,068 GBP