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Marquise|Natural|GIA

1.21ct G SI1 Marquise Natural Diamond

EX • G/SI1 • GIA 5241043968

Certificate GIA 5241043968

Diamond specifications and retailer prices

From $4,327 USD
As of November 5, 2026
Save $3,998 USD (48%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $8,325 USD at MOH London · As of November 4, 2026
View at MOH London

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 5241043968. Listed at 6 retailers as of November 4, 2026, with prices from $4,327 to $8,325, a $3,998 spread on the same certified stone. MOH London lists it at $8,325. 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
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryGood
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 5241043968
Dimensions9.95 × 5.76 × 3.62 mm
L/W Ratio1.73
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Needle, Feather, Natural
Top View
9.95 mm5.76 mm1.21 ctG / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryGood
FluorescenceFaint
CertificateGIA 5241043968
Side View
Table 53.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 62.9%

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: $8,325 USD|Low: $4,220 USD|High: $8,437 USD|Avg: $6,030 USD|-1.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 5, 2026
Retailer 4$4,220 USD
Retailer 2$5,179 USD
Retailer 5$5,784 USD
Retailer 3$5,906 USD
MOH London$8,325 USD

34 data points across 5 retailers

6 retailers$4,327 USD to $8,325 USD

Retailer 1
-
$4,220 USD
Price last confirmed 8 days ago
B+
Retailer 2
-
$4,327 USD
View
B
Retailer 3
-
$5,179 USD
View
Retailer 4
-
$5,784 USD
View
Price last confirmed 23 days ago
B
Retailer 5
-
$5,906 USD
View
Most Expensive
B
MOH London
2F5F63AFF · Nov 4
$8,325 USD
£6,555 GBP
View
5 more retailers have this diamond
Prices start from $4,327 USDSave up to $3,998 USD

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
$4,327 USD