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Marquise|Natural|GIA

1.21ct D SI1 Marquise Natural Diamond

ID • D/SI1 • GIA 7562185918

Certificate GIA 7562185918

Diamond specifications and retailer prices

From £4,161 GBP
As of November 5, 2026
Save £3,059 GBP (42%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £7,221 GBP at NZ Jewellers · As of November 3, 2026
View at NZ Jewellers

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 top-tier cut grade stated by the retailer rather than the lab and certified by GIA 7562185918. Listed at 9 retailers as of November 3, 2026, with prices from £4,161 to £7,221, a £3,059 spread on the same certified stone. NZ Jewellers lists it at £7,221. 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
D
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceStrong
Crown angle37.43°
Pavilion angle39.32°
OriginNatural
Grading LabGIA
CertificateGIA 7562185918
Dimensions10.67 × 5.57 × 3.49 mm
L/W Ratio1.92
Girdle conditionVery Thick
Key to symbols
Crystal, Feather, Needle
Top View
10.67 mm5.57 mm1.21 ctD / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceStrong
CertificateGIA 7562185918
Side View
Table 58.0%Crown 37.43°Girdle: THK-VTKPavilion 39.32°Culet: NoneDepth 62.6%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: £7,221 GBP|Low: £4,031 GBP|High: £7,623 GBP|Avg: £5,062 GBP|-5.3%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 5£4,161 GBP
Retailer 7£4,161 GBP
Retailer 3£4,211 GBP
Retailer 6£4,317 GBP
Retailer 8£4,317 GBP
Retailer 9£4,452 GBP
Retailer 2£4,879 GBP
Retailer 4£6,359 GBP
NZ Jewellers£7,221 GBP

44 data points across 9 retailers

9 retailers£4,161 GBP to £7,221 GBP

B+
Cheapest Retailer
-
£4,161 GBP
B+
Retailer 2
-
£4,161 GBP
View
B+
Retailer 3
-
£4,211 GBP
View
B+
Retailer 4
-
£4,317 GBP
View
B+
Retailer 5
-
£4,317 GBP
View
Retailer 6
-
£4,452 GBP
View
Price last confirmed 29 days ago
B+
Retailer 7
-
£4,879 GBP
View
B
Retailer 8
-
£6,359 GBP
View
Most Expensive
B
NZ Jewellers
8839e944-3533-45b3-ada4-8b9cbfdcc6b5 · Nov 3
£7,221 GBP
$9,665 USD
View
8 more retailers have this diamond
Prices start from £4,161 GBPSave up to £3,059 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
£4,161 GBP