CaratHunter
Plans
Marquise|Natural|GIA

1.55ct J SI2 Marquise Natural Diamond

ID • J/SI2 • GIA 5566379400

Certificate GIA 5566379400

Diamond specifications and retailer prices

From $8,936 AUD
As of November 6, 2026
Save $7,782 AUD (47%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $16,718 AUD 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 $8,936 to $16,718, a $7,782 spread on the same certified stone. MOH London lists it at $16,718. 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
Colour
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
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $16,718 AUD|Low: $8,936 AUD|High: $16,763 AUD|Avg: $11,605 AUD|-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$8,936 AUD
Retailer 10$9,328 AUD
Retailer 4$9,648 AUD
Retailer 9$10,004 AUD
Retailer 8$11,240 AUD
Retailer 12$11,263 AUD
Retailer 13$11,514 AUD
Retailer 2$11,661 AUD
Retailer 3$12,022 AUD
Retailer 5$12,022 AUD
Retailer 7$12,375 AUD
Retailer 6$12,429 AUD
Retailer 11$13,262 AUD
MOH London$16,718 AUD

10 data points across 14 retailers

15 retailers$8,936 AUD to $16,718 AUD

B+
Cheapest Retailer
-
$8,936 AUD
B+
Retailer 2
-
$9,328 AUD
View
B+
Retailer 3
-
$9,357 AUD
View
B+
Retailer 4
-
$9,648 AUD
View
B+
Retailer 5
-
$10,004 AUD
View
B+
Retailer 6
-
$11,240 AUD
View
B
Retailer 7
-
$11,263 AUD
View
B
Retailer 8
-
$11,514 AUD
View
B
Retailer 9
-
$11,661 AUD
View
B
Retailer 10
-
$12,022 AUD
View
B
Retailer 11
-
$12,022 AUD
View
B
Retailer 12
-
$12,375 AUD
View
B
Retailer 13
-
$12,429 AUD
View
B
Retailer 14
-
$13,262 AUD
View
Most Expensive
B
MOH London
6F1376AF6 · Nov 4
$16,718 AUD
£9,045 GBP
View
14 more retailers have this diamond
Prices start from $8,936 AUDSave up to $7,782 AUD

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
$8,936 AUD