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Marquise|Natural|GIA

1.50ct J SI1 Marquise Natural Diamond

VG • J/SI1 • GIA 6541628399

Certificate GIA 6541628399

Diamond specifications and retailer prices

From $8,645 AUD
As of November 6, 2026
Save $7,692 AUD (47%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: $20,176 AUD at NZ Jewellers · As of September 30, 2026
View at NZ Jewellers

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 very-good cut grade stated by the retailer rather than the lab and certified by GIA 6541628399. Listed at 23 retailers as of November 4, 2026, with a 89% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.50
Carat
J
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6541628399
Dimensions10.87 × 5.87 × 3.76 mm
L/W Ratio1.85
Top View
10.87 mm5.87 mm1.50 ctJ / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6541628399
Side View
Table 60.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 64.1%

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: $10,351 AUD|Low: $8,645 AUD|High: $17,014 AUD|Avg: $11,819 AUD
Retailer 1
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
Retailer 18
November 6, 2026
Retailer 16$8,645 AUD
Retailer 5$9,109 AUD
Retailer 7$9,287 AUD
Retailer 11$9,304 AUD
Retailer 6$9,421 AUD
Retailer 8$9,830 AUD
Retailer 18$9,846 AUD
Retailer 1$10,351 AUD
Retailer 4$10,466 AUD
Retailer 17$10,856 AUD
Retailer 2$10,911 AUD
Retailer 13$10,978 AUD
Retailer 10$11,565 AUD
Retailer 3$11,856 AUD
Retailer 9$11,889 AUD
Retailer 12$12,087 AUD
Retailer 14$14,339 AUD
Retailer 15$16,337 AUD

39 data points across 18 retailers

23 retailers$8,645 AUD to $16,337 AUD

B+
Cheapest Retailer
-
$8,645 AUD
Retailer 2
-
$8,667 AUD
View
Price last confirmed 13 days ago
B+
Retailer 3
-
$9,109 AUD
View
B+
Retailer 4
-
$9,287 AUD
View
B+
Retailer 5
-
$9,304 AUD
View
B
Retailer 6
-
$9,421 AUD
View
B
Retailer 7
-
$9,830 AUD
View
Final sale: no returns
B
Retailer 8
-
$9,846 AUD
View
Retailer 9
-
$10,351 AUD
View
B
Retailer 10
-
$10,466 AUD
View
B
Retailer 11
-
$10,856 AUD
View
B
Retailer 12
-
$10,911 AUD
View
Retailer 13
-
$10,929 AUD
View
Price last confirmed 37 days ago
B
Retailer 14
-
$10,978 AUD
View
Retailer 15
-
$11,096 AUD
View
Price last confirmed 37 days ago
Retailer 16
-
$11,565 AUD
View
Price last confirmed 16 days ago
B
Retailer 17
-
$11,856 AUD
View
B
Retailer 18
-
$11,889 AUD
View
B
Retailer 19
-
$12,087 AUD
View
Retailer 20
-
$12,610 AUD
View
Price last confirmed 39 days ago
B
Retailer 21
-
$14,339 AUD
View
B
Retailer 22
-
$16,337 AUD
View
Most Expensive
NZ Jewellers
6d6dd5ac-c111-4bce-bcbc-03285a640c2a · Sep 30
$20,176 AUD
$13,863 USD
View
Price last confirmed 37 days ago
22 more retailers have this diamond
Prices start from $8,645 AUDSave up to $7,692 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
$8,645 AUD