CaratHunter
Plans
Marquise|Natural|GIA

1.50ct D SI1 Marquise Natural Diamond

VG • D/SI1 • GIA 6551666431

Certificate GIA 6551666431

Diamond specifications and retailer prices

From $10,846 AUD
As of November 5, 2026
Save $8,597 AUD (44%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $19,443 AUD at With Clarity · As of November 6, 2026
View at With Clarity

About this 1.5ct natural marquise diamond

This 1.5ct natural marquise sits in the one-and-a-half to two carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 6551666431. Listed at 14 retailers as of November 5, 2026, with prices from $10,846 to $19,443, a $8,597 spread on the same certified stone. With Clarity lists it at $19,443. 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
D
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle40.52°
Pavilion angle39.55°
OriginNatural
Grading LabGIA
CertificateGIA 6551666431
Dimensions10.86 × 5.87 × 3.79 mm
L/W Ratio1.85
Culet sizeNone
Top View
10.86 mm5.87 mm1.50 ctD / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6551666431
Side View
Table 61.0%Crown 40.52°Girdle: VTN-VTKPavilion 39.55°Culet: NoneDepth 64.7%

Caratlytics Score

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

Price History

Last verified: Nov 5
Current: $14,309 AUD|Low: $10,846 AUD|High: $20,246 AUD|Avg: $13,887 AUD|-6.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
With Clarity
November 6, 2026
Retailer 9$10,846 AUD
Retailer 10$11,485 AUD
Retailer 7$11,664 AUD
Retailer 6$11,809 AUD
Retailer 8$11,937 AUD
Retailer 11$12,102 AUD
Retailer 5$12,240 AUD
Retailer 2$13,956 AUD
Retailer 12$14,085 AUD
Retailer 1$14,309 AUD
Retailer 4$14,435 AUD
Retailer 3$17,610 AUD
With Clarity$19,443 AUD

38 data points across 13 retailers

14 retailers$10,846 AUD to $19,443 AUD

A
Cheapest Retailer
-
$10,846 AUD
A
Retailer 2
-
$11,485 AUD
View
A
Retailer 3
-
$11,664 AUD
View
A
Retailer 4
-
$11,809 AUD
View
A
Retailer 5
-
$11,937 AUD
View
A
Retailer 6
-
$12,102 AUD
View
A
Retailer 7
-
$12,240 AUD
View
B+
Retailer 8
-
$13,956 AUD
View
B+
Retailer 9
-
$14,085 AUD
View
B+
Retailer 10
-
$14,309 AUD
View
B+
Retailer 11
-
$14,435 AUD
View
B+
Retailer 12
-
$15,641 AUD
View
B+
Retailer 13
-
$17,610 AUD
View
Most Expensive
B
With Clarity
6551666431 · Nov 6
$19,443 AUD
$13,359 USD
View
13 more retailers have this diamond
Prices start from $10,846 AUDSave up to $8,597 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
1.50ct Marquise
$10,846 AUD