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Marquise|Natural|GIA

1.21ct D SI1 Marquise Natural Diamond

EX • D/SI1 • GIA 2235875611

Certificate GIA 2235875611

Diamond specifications and retailer prices

From £4,401 GBP
As of November 6, 2026
Save £4,569 GBP (51%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £8,971 GBP at NZ Jewellers · As of November 5, 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 2235875611. Listed at 15 retailers as of November 5, 2026, with prices from £4,401 to £8,971, a £4,569 spread on the same certified stone. NZ Jewellers lists it at £8,971. 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
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle43.71°
Pavilion angle39.87°
OriginNatural
Grading LabGIA
CertificateGIA 2235875611
Dimensions9.99 × 5.48 × 3.60 mm
L/W Ratio1.82
Culet sizeNone
Top View
9.99 mm5.48 mm1.21 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2235875611
Side View
Table 61.0%Crown 43.71°Girdle: STK-THKPavilion 39.87°Culet: NoneDepth 65.7%

Caratlytics Score

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

Price History

Last verified: Nov 6
Current: £8,971 GBP|Low: £4,950 GBP|High: £8,971 GBP|Avg: £6,159 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 8£4,950 GBP
Retailer 3£5,092 GBP
Retailer 6£5,205 GBP
Retailer 9£5,364 GBP
Retailer 7£5,446 GBP
Retailer 2£5,827 GBP
Retailer 4£6,544 GBP
Retailer 5£7,711 GBP
NZ Jewellers£8,971 GBP

45 data points across 9 retailers

15 retailers£4,401 GBP to £8,971 GBP

B+
Cheapest Retailer
-
£4,401 GBP
B+
Retailer 2
-
£4,538 GBP
View
B+
Retailer 3
-
£4,678 GBP
View
Retailer 4
-
£4,950 GBP
View
Price last confirmed 9 days ago
B
Retailer 5
-
£4,961 GBP
View
B+
Retailer 6
-
£5,092 GBP
View
Retailer 7
-
£5,205 GBP
View
Price last confirmed 16 days ago
B
Retailer 8
-
£5,364 GBP
View
B
Retailer 9
-
£5,446 GBP
View
B
Retailer 10
-
£5,484 GBP
View
B
Retailer 11
-
£5,827 GBP
View
B
Retailer 12
-
£6,188 GBP
View
B
Retailer 13
-
£6,544 GBP
View
B
Retailer 14
-
£7,711 GBP
View
Most Expensive
B
NZ Jewellers
73d8b48a-968c-47cf-8063-b3b856ef1991 · Nov 5
£8,971 GBP
$12,007 USD
View
14 more retailers have this diamond
Prices start from £4,401 GBPSave up to £4,569 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
£4,401 GBP