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Marquise|Natural|GIA

1.55ct J SI2 Marquise Natural Diamond

ID • J/SI2 • GIA 5566379400

Certificate GIA 5566379400

Diamond specifications and retailer prices

From $6,140 USD
As of November 6, 2026
Save $5,347 USD (47%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $11,487 USD at MOH London · As of November 4, 2026
View at MOH London

About this 1.55ct natural marquise diamond

This 1.55ct natural marquise sits in the one-and-a-half to two carat band, graded J colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 5566379400. Listed at 15 retailers as of November 4, 2026, with prices from $6,140 to $11,487, a $5,347 spread on the same certified stone. MOH London lists it at $11,487. 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

1.55
Carat
J
Color
SI2
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 5566379400
Dimensions12.55 × 5.89 × 3.73 mm
L/W Ratio2.13
Girdle conditionFaceted
Culet sizeNone
Top View
12.55 mm5.89 mm1.55 ctJ / SI2
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 5566379400
Side View
Table 57.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 63.3%

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 6
Current: $11,487 USD|Low: $6,140 USD|High: $11,518 USD|Avg: $7,974 USD|-0.3%
MOH London
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
November 6, 2026
Retailer 14$6,140 USD
Retailer 10$6,409 USD
Retailer 4$6,629 USD
Retailer 9$6,874 USD
Retailer 8$7,723 USD
Retailer 12$7,739 USD
Retailer 13$7,911 USD
Retailer 2$8,012 USD
Retailer 3$8,260 USD
Retailer 5$8,260 USD
Retailer 7$8,503 USD
Retailer 6$8,540 USD
Retailer 11$9,112 USD
MOH London$11,487 USD

10 data points across 14 retailers

15 retailers$6,140 USD to $11,487 USD

B+
Cheapest Retailer
-
$6,140 USD
B+
Retailer 2
-
$6,409 USD
View
B+
Retailer 3
-
$6,429 USD
View
B+
Retailer 4
-
$6,629 USD
View
B+
Retailer 5
-
$6,874 USD
View
B+
Retailer 6
-
$7,723 USD
View
B
Retailer 7
-
$7,739 USD
View
B
Retailer 8
-
$7,911 USD
View
B
Retailer 9
-
$8,012 USD
View
B
Retailer 10
-
$8,260 USD
View
B
Retailer 11
-
$8,260 USD
View
B
Retailer 12
-
$8,503 USD
View
B
Retailer 13
-
$8,540 USD
View
B
Retailer 14
-
$9,112 USD
View
Most Expensive
B
MOH London
6F1376AF6 · Nov 4
$11,487 USD
£9,045 GBP
View
14 more retailers have this diamond
Prices start from $6,140 USDSave up to $5,347 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+
1.55ct Marquise
$6,140 USD