Marquise|Natural|GIA

1.21ct G SI1 Marquise Natural Diamond

ID • G/SI1 • GIA 7561500713

Certificate GIA 7561500713

Diamond specifications and retailer prices

From £3,079 GBP
As of November 4, 2026
Save £3,595 GBP (54%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: £7,118 GBP at NZ Jewellers · As of October 30, 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 7561500713. Listed at 22 retailers as of November 1, 2026, with a 117% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 7561500713
Dimensions10.50 × 5.38 × 3.43 mm
L/W Ratio1.95
Girdle conditionFaceted
Top View
10.50 mm5.38 mm1.21 ctG / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 7561500713
Side View
Table 61.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 63.7%

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 4
Current: £7,118 GBP|Low: £2,983 GBP|High: £7,118 GBP|Avg: £4,276 GBP|+0.6%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
Retailer 21
Retailer 22
November 3, 2026
Retailer 22£3,079 GBP
Retailer 3£3,216 GBP
Retailer 20£3,241 GBP
Retailer 7£3,328 GBP
Retailer 15£3,336 GBP
Retailer 17£3,408 GBP
Retailer 10£3,412 GBP
Retailer 8£3,504 GBP
Retailer 21£3,505 GBP
Retailer 13£3,567 GBP
Retailer 5£3,662 GBP
Retailer 11£3,825 GBP
Retailer 16£3,859 GBP
Retailer 18£4,018 GBP
Retailer 19£4,087 GBP
Retailer 14£4,146 GBP
Retailer 2£4,533 GBP
Retailer 4£4,938 GBP
Retailer 9£5,231 GBP
Retailer 12£6,084 GBP
Retailer 6£6,674 GBP
NZ Jewellers£7,118 GBP

16 data points across 22 retailers

22 retailers£3,079 GBP to £6,674 GBP

B+
Cheapest Retailer
-
£3,079 GBP
B+
Retailer 2
-
£3,216 GBP
View
B+
Retailer 3
-
£3,241 GBP
View
B+
Retailer 4
-
£3,328 GBP
View
Retailer 5
-
£3,336 GBP
View
Price last confirmed 11 days ago
Retailer 6
-
£3,408 GBP
View
Price last confirmed 4 days ago
B+
Retailer 7
-
£3,412 GBP
View
Retailer 8
-
£3,489 GBP
View
Price last confirmed 15 days ago
B+
Retailer 9
-
£3,505 GBP
View
B+
Retailer 10
-
£3,567 GBP
View
B+
Retailer 11
-
£3,662 GBP
View
Retailer 12
-
£3,825 GBP
View
Price last confirmed 10 days ago
B+
Retailer 13
-
£3,859 GBP
View
B+
Retailer 14
-
£4,018 GBP
View
B+
Retailer 15
-
£4,087 GBP
View
Retailer 16
-
£4,146 GBP
View
Price last confirmed 11 days ago
B
Retailer 17
-
£4,533 GBP
View
B
Retailer 18
-
£4,938 GBP
View
B
Retailer 19
-
£5,231 GBP
View
Retailer 20
-
£6,084 GBP
View
Price last confirmed 10 days ago
B
Retailer 21
-
£6,674 GBP
View
Most Expensive
NZ Jewellers
a069030f-b983-460f-bb58-9813eb1e55d9 · Oct 30
£7,118 GBP
$9,528 USD
View
Price last confirmed 7 days ago
21 more retailers have this diamond
Prices start from £3,079 GBPSave up to £3,595 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
£3,079 GBP