Marquise|Natural|GIA

1.21ct G SI1 Marquise Natural Diamond

EX • G/SI1

Diamond specifications and retailer prices

From £4,132 GBP
As of November 5, 2026
Save £883 GBP (18%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £8,024 GBP at NZ Jewellers · As of October 21, 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 G 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. Listed at 18 retailers as of November 5, 2026, with a relatively tight 21% spread, which is unusual at this carat range and suggests competitive pricing across the listings. 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
G
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
Dimensions10.67 × 5.42 × 3.36 mm
L/W Ratio1.97
Top View
10.67 mm5.42 mm1.21 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA
Side View
Table 55.0%CrownGirdle: Very ThickPavilionCulet: NDepth 62.0%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Nov 5
Current: £8,024 GBP|Low: £4,132 GBP|High: £8,024 GBP|Avg: £4,894 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 7£4,132 GBP
Retailer 4£4,347 GBP
Retailer 5£4,347 GBP
Retailer 6£4,347 GBP
Retailer 9£4,358 GBP
Retailer 10£4,539 GBP
Retailer 2£4,654 GBP
Retailer 8£4,842 GBP
Retailer 3£5,015 GBP
NZ Jewellers£8,024 GBP

23 data points across 10 retailers

18 retailers£4,132 GBP to £5,015 GBP

B
Cheapest Retailer
-
£4,132 GBP
Retailer 2
-
£4,347 GBP
View
Price last confirmed 9 days ago
Retailer 3
-
£4,347 GBP
View
Price last confirmed 22 days ago
Retailer 4
-
£4,347 GBP
View
Price last confirmed 9 days ago
Retailer 5
-
£4,347 GBP
View
Price last confirmed 16 days ago
Retailer 6
-
£4,347 GBP
View
Price last confirmed 9 days ago
Retailer 7
-
£4,347 GBP
View
Price last confirmed 18 days ago
Retailer 8
-
£4,347 GBP
View
Price last confirmed 22 days ago
B
Retailer 9
-
£4,358 GBP
View
Retailer 10
-
£4,539 GBP
View
Price last confirmed 9 days ago
B
Retailer 11
-
£4,654 GBP
View
B
Retailer 12
-
£4,842 GBP
View
Retailer 13
-
£5,015 GBP
View
Price last confirmed 11 days ago
Retailer 14
-
£5,015 GBP
View
Price last confirmed 17 days ago
Retailer 15
-
£5,015 GBP
View
Price last confirmed 62 days ago
B
Retailer 16
-
£5,015 GBP
View
Retailer 17
-
£8,024 GBP
View
Price last confirmed 11 days ago
Most Expensive
NZ Jewellers
c2a38539-61b8-46f5-a17a-5b47b4f89cf5 · Oct 21
£8,024 GBP
$10,740 USD
View
Price last confirmed 16 days ago
17 more retailers have this diamond
Prices start from £4,132 GBPSave up to £883 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
£4,132 GBP