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Marquise|Natural|GIA

1.51ct J SI2 Marquise Natural Diamond

EX • J/SI2 • GIA 1568681688

Certificate GIA 1568681688

Diamond specifications and retailer prices

From $4,455 AUD
As of November 5, 2026
Save $4,693 AUD (51%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $9,148 AUD at Wholesale Diamonds Direct · As of November 6, 2026
View at Wholesale Diamonds Direct

About this 1.51ct natural marquise diamond

This 1.51ct 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 1568681688. Listed at 10 retailers as of November 5, 2026, with prices from $4,455 to $9,148, a $4,693 spread on the same certified stone. Wholesale Diamonds Direct lists it at $9,148. 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

1.51
Carat
J
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle35.28°
Pavilion angle42.05°
OriginNatural
Grading LabGIA
CertificateGIA 1568681688
Dimensions11.51 × 6.05 × 3.82 mm
L/W Ratio1.90
Culet sizeNone
Top View
11.51 mm6.05 mm1.51 ctJ / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1568681688
Side View
Table 60.0%Crown 35.28°Girdle: MED-THKPavilion 42.05°Culet: NDepth 63.1%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: $6,468 AUD|Low: $4,448 AUD|High: $9,148 AUD|Avg: $6,198 AUD|-0.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Wholesale Diamonds Direct
November 6, 2026
Retailer 2$4,455 AUD
Retailer 3$5,030 AUD
Retailer 5$5,376 AUD
Retailer 8$5,378 AUD
Retailer 7$5,493 AUD
Retailer 4$6,392 AUD
Retailer 6$6,459 AUD
Retailer 1$6,468 AUD
Wholesale Diamonds Direct$9,148 AUD

11 data points across 9 retailers

10 retailers$4,455 AUD to $9,148 AUD

A
Cheapest Retailer
-
$4,455 AUD
A
Retailer 2
-
$5,030 AUD
View
A
Retailer 3
-
$5,376 AUD
View
A
Retailer 4
-
$5,378 AUD
View
A
Retailer 5
-
$5,378 AUD
View
A
Retailer 6
-
$5,493 AUD
View
B+
Retailer 7
-
$6,392 AUD
View
B+
Retailer 8
-
$6,459 AUD
View
A
Retailer 9
-
$6,468 AUD
View
Most Expensive
B
Wholesale Diamonds Direct
610869279 · Nov 6
$9,148 AUD
$6,285 USD
View
9 more retailers have this diamond
Prices start from $4,455 AUDSave up to $4,693 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.

A
1.51ct Marquise
$4,455 AUD