Marquise|Natural|GIA

1.20ct J SI1 Marquise Natural Diamond

EX • J/SI1 • GIA 7551045067

Certificate GIA 7551045067

Diamond specifications and retailer prices

From $3,231 USD
As of November 6, 2026
Save $3,599 USD (53%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $6,830 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 J 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 7551045067. Listed at 16 retailers as of November 4, 2026, with prices from $3,231 to $6,830, a $3,599 spread on the same certified stone. MOH London lists it at $6,830. 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
J
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 7551045067
Dimensions10.22 × 5.49 × 3.61 mm
L/W Ratio1.86
Girdle conditionFaceted
Top View
10.22 mm5.49 mm1.20 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 7551045067
Side View
Table 62.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 65.8%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Nov 6
Current: $6,830 USD|Low: $2,944 USD|High: $6,930 USD|Avg: $4,178 USD|-1.4%
MOH London
Retailer 2
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Retailer 22
November 7, 2026
Retailer 12$2,944 USD
Retailer 8$2,951 USD
Retailer 14$3,048 USD
Retailer 22$3,231 USD
Retailer 9$3,255 USD
Retailer 4$3,547 USD
Retailer 11$3,640 USD
Retailer 3$3,657 USD
Retailer 18$3,739 USD
Retailer 21$3,852 USD
Retailer 2$4,210 USD
Retailer 20$4,280 USD
Retailer 13$4,397 USD
Retailer 5$4,440 USD
Retailer 6$4,440 USD
Retailer 7$4,590 USD
Retailer 17$4,607 USD
Retailer 15$4,841 USD
Retailer 16$4,851 USD
Retailer 10$5,000 USD
Retailer 19$6,277 USD
MOH London$6,830 USD

29 data points across 22 retailers

16 retailers$3,231 USD to $6,830 USD

Retailer 1
-
$2,944 USD
Price last confirmed 66 days ago
B
Retailer 2
-
$3,231 USD
View
B
Retailer 3
-
$3,547 USD
View
B
Retailer 4
-
$3,657 USD
View
B
Retailer 5
-
$3,739 USD
View
B
Retailer 6
-
$3,852 USD
View
Retailer 7
-
$4,210 USD
View
B
Retailer 8
-
$4,280 USD
View
B
Retailer 9
-
$4,397 USD
View
B
Retailer 10
-
$4,440 USD
View
B
Retailer 11
-
$4,440 USD
View
B
Retailer 12
-
$4,590 USD
View
B
Retailer 13
-
$4,607 USD
View
B
Retailer 14
-
$4,851 USD
View
B
Retailer 15
-
$6,277 USD
View
Most Expensive
B
MOH London
1B08443EC · Nov 4
$6,830 USD
£5,378 GBP
View
15 more retailers have this diamond
Prices start from $3,231 USDSave up to $3,599 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
$3,231 USD