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Marquise|Natural|GIA

1.20ct E SI2 Marquise Natural Diamond

EX • E/SI2 • GIA 1246030164

Certificate GIA 1246030164

Diamond specifications and retailer prices

From $5,001 USD
As of November 4, 2026
Save $4,299 USD (46%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $9,300 USD at MOH London · As of November 4, 2026
View at MOH London

About this 1.2ct natural marquise diamond

This 1.2ct natural marquise sits in the classic one-carat band, graded E colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1246030164. Listed at 12 retailers as of November 4, 2026, with prices from $5,001 to $9,300, a $4,299 spread on the same certified stone. MOH London lists it at $9,300. 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

1.20
Carat
E
Color
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1246030164
Dimensions10.54 × 5.54 × 3.52 mm
L/W Ratio1.90
Girdle conditionFaceted
Culet sizeNone
Top View
10.54 mm5.54 mm1.20 ctE / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1246030164
Side View
Table 62.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 63.6%

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 4
Current: $9,300 USD|Low: $5,001 USD|High: $9,437 USD|Avg: $6,638 USD|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 7$5,001 USD
Retailer 6$5,032 USD
Retailer 5$5,993 USD
Retailer 3$6,012 USD
Retailer 2$6,224 USD
Retailer 4$8,661 USD
MOH London$9,300 USD

37 data points across 7 retailers

12 retailers$5,001 USD to $9,300 USD

B+
Cheapest Retailer
-
$5,001 USD
B+
Retailer 2
-
$5,032 USD
View
B+
Retailer 3
-
$5,337 USD
View
B+
Retailer 4
-
$5,993 USD
View
B+
Retailer 5
-
$6,012 USD
View
B+
Retailer 6
-
$6,224 USD
View
B
Retailer 7
-
$6,400 USD
View
B
Retailer 8
-
$6,400 USD
View
B
Retailer 9
-
$6,610 USD
View
Retailer 10
-
$6,979 USD
View
Price last confirmed 14 days ago
Retailer 11
-
$8,661 USD
View
Price last confirmed 9 days ago
Most Expensive
B
MOH London
0B3BA7F49 · Nov 4
$9,300 USD
£7,323 GBP
View
11 more retailers have this diamond
Prices start from $5,001 USDSave up to $4,299 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+
1.20ct Marquise
$5,001 USD