Marquise|Natural|GIA

1.21ct G SI1 Marquise Natural Diamond

VG • G/SI1 • GIA 2556223674

Certificate GIA 2556223674

Diamond specifications and retailer prices

From £3,514 GBP
As of November 6, 2026
Save £3,438 GBP (49%) vs most expensive(unlock to see where)
26 retailers carry this diamond
Most expensive: £8,024 GBP at NZ Jewellers · As of September 20, 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 very-good cut grade stated by the retailer rather than the lab and certified by GIA 2556223674. Listed at 26 retailers as of November 6, 2026, with a 98% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.21
Carat
G
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2556223674
Dimensions10.67 × 5.42 × 3.36 mm
L/W Ratio1.97
Girdle conditionFaceted
Culet sizeNone
Top View
10.67 mm5.42 mm1.21 ctG / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2556223674
Side View
Table 55.0%CrownGirdle: VTK-ETKPavilionCulet: NoneDepth 62.0%

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 6
Current: £4,471 GBP|Low: £3,160 GBP|High: £7,153 GBP|Avg: £4,653 GBP
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
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Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
Retailer 21
Retailer 22
Retailer 23
November 6, 2026
Retailer 12£3,514 GBP
Retailer 5£3,599 GBP
Retailer 7£3,748 GBP
Retailer 6£3,791 GBP
Retailer 22£3,792 GBP
Retailer 9£3,839 GBP
Retailer 2£4,012 GBP
Retailer 10£4,057 GBP
Retailer 11£4,290 GBP
Retailer 17£4,424 GBP
Retailer 1£4,471 GBP
Retailer 3£4,473 GBP
Retailer 14£4,510 GBP
Retailer 18£4,601 GBP
Retailer 4£4,672 GBP
Retailer 8£4,849 GBP
Retailer 13£4,849 GBP
Retailer 15£4,914 GBP
Retailer 20£4,947 GBP
Retailer 16£5,006 GBP
Retailer 21£5,842 GBP
Retailer 23£6,953 GBP
Retailer 19£7,106 GBP

26 data points across 23 retailers

26 retailers£3,514 GBP to £6,953 GBP

B
Cheapest Retailer
-
£3,514 GBP
B
Retailer 2
-
£3,599 GBP
View
Retailer 3
-
£3,748 GBP
View
Price last confirmed 8 days ago
Retailer 4
-
£3,791 GBP
View
Price last confirmed 9 days ago
B+
Retailer 5
-
£3,792 GBP
View
Retailer 6
-
£3,839 GBP
View
Price last confirmed 9 days ago
B
Retailer 7
-
£3,943 GBP
View
B
Retailer 8
-
£4,012 GBP
View
Final sale: no returns
Retailer 9
-
£4,057 GBP
View
Price last confirmed 8 days ago
Retailer 10
-
£4,290 GBP
View
Price last confirmed 7 days ago
Retailer 11
-
£4,347 GBP
View
Price last confirmed 45 days ago
B
Retailer 12
-
£4,424 GBP
View
B
Retailer 13
-
£4,471 GBP
View
B
Retailer 14
-
£4,473 GBP
View
Retailer 15
-
£4,510 GBP
View
Price last confirmed 14 days ago
Retailer 16
-
£4,601 GBP
View
Price last confirmed 7 days ago
B
Retailer 17
-
£4,849 GBP
View
Retailer 18
-
£4,849 GBP
View
Price last confirmed 9 days ago
Retailer 19
-
£4,914 GBP
View
Price last confirmed 8 days ago
Retailer 20
-
£4,947 GBP
View
Price last confirmed 9 days ago
B
Retailer 21
-
£5,006 GBP
View
Retailer 22
-
£5,015 GBP
View
Price last confirmed 43 days ago
Retailer 23
-
£5,842 GBP
View
Price last confirmed 10 days ago
B
Retailer 24
-
£6,953 GBP
View
Retailer 25
-
£7,106 GBP
View
Price last confirmed 8 days ago
Most Expensive
NZ Jewellers
4554951b-138a-4283-ab0b-55a63c055d2b · Sep 20
£8,024 GBP
$10,740 USD
View
Price last confirmed 47 days ago
25 more retailers have this diamond
Prices start from £3,514 GBPSave up to £3,438 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
£3,514 GBP