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Marquise|Natural|GIA

1.50ct J SI1 Marquise Natural Diamond

ID • J/SI1 • GIA 6552214701

Certificate GIA 6552214701

Diamond specifications and retailer prices

From $9,865 AUD
As of November 6, 2026
Save $8,621 AUD (47%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $18,485 AUD at MOH London · As of November 4, 2026
View at MOH London

About this 1.5ct natural marquise diamond

This 1.5ct natural marquise sits in the one-and-a-half to two 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 6552214701. Listed at 17 retailers as of November 4, 2026, with prices from $9,865 to $18,485, a $8,621 spread on the same certified stone. MOH London lists it at $18,485. 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

1.50
Carat
J
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6552214701
Dimensions11.33 × 5.92 × 3.74 mm
L/W Ratio1.91
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Twinning Wisp, Feather, Needle
Top View
11.33 mm5.92 mm1.50 ctJ / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6552214701
Side View
Table 59.0%CrownGirdle: STK-THKPavilionCulet: 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: $18,485 AUD|Low: $9,865 AUD|High: $18,757 AUD|Avg: $12,467 AUD|-1.3%
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
Retailer 15
Retailer 16
Retailer 17
November 6, 2026
Retailer 4$9,865 AUD
Retailer 9$9,940 AUD
Retailer 12$10,130 AUD
Retailer 3$10,335 AUD
Retailer 17$10,413 AUD
Retailer 5$10,694 AUD
Retailer 16$10,913 AUD
Retailer 6$11,848 AUD
Retailer 10$12,284 AUD
Retailer 14$12,323 AUD
Retailer 13$12,530 AUD
Retailer 8$12,764 AUD
Retailer 2$13,720 AUD
Retailer 15$14,171 AUD
Retailer 7$14,643 AUD
Retailer 11$16,225 AUD
MOH London$18,485 AUD

42 data points across 17 retailers

17 retailers$9,865 AUD to $18,485 AUD

B+
Cheapest Retailer
-
$9,865 AUD
B+
Retailer 2
-
$10,130 AUD
View
B
Retailer 3
-
$10,335 AUD
View
B
Retailer 4
-
$10,373 AUD
View
B+
Retailer 5
-
$10,413 AUD
View
B+
Retailer 6
-
$10,694 AUD
View
B+
Retailer 7
-
$10,913 AUD
View
B
Retailer 8
-
$11,848 AUD
View
B
Retailer 9
-
$12,284 AUD
View
B
Retailer 10
-
$12,323 AUD
View
Retailer 11
-
$12,530 AUD
View
Price last confirmed 15 days ago
B
Retailer 12
-
$12,764 AUD
View
B
Retailer 13
-
$13,720 AUD
View
B
Retailer 14
-
$14,171 AUD
View
Retailer 15
-
$14,643 AUD
View
Price last confirmed 15 days ago
B
Retailer 16
-
$16,225 AUD
View
Most Expensive
B
MOH London
B1939AF06 · Nov 4
$18,485 AUD
£10,001 GBP
View
16 more retailers have this diamond
Prices start from $9,865 AUDSave up to $8,621 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+
1.50ct Marquise
$9,865 AUD