Marquise|Natural|GIA

1.50ct F SI1 Marquise Natural Diamond

EX • F/SI1

Diamond specifications and retailer prices

From $12,611 AUD
$8,838 USD
As of November 2, 2026
Save $4,145 AUD (25%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $23,558 AUD at NZ Jewellers · As of October 6, 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 F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA. Listed at 9 retailers as of November 1, 2026, with a 33% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
F
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
Dimensions11.63 × 5.82 × 3.88 mm
L/W Ratio2.00
Top View
11.63 mm5.82 mm1.50 ctF / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA
Side View
Table 62.0%CrownGirdle: ThickPavilionCulet: NoneDepth 66.7%

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 2
Current: $23,558 AUD|Low: $12,321 AUD|High: $23,558 AUD|Avg: $15,634 AUD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 30, 2026
Retailer 7$12,321 AUD
Retailer 10$12,611 AUD
Retailer 2$13,861 AUD
Retailer 5$14,135 AUD
Retailer 3$15,022 AUD
Retailer 6$15,312 AUD
Retailer 9$15,702 AUD
Retailer 4$16,756 AUD
Retailer 8$17,668 AUD
NZ Jewellers$23,558 AUD

8 data points across 10 retailers

9 retailers$12,611 AUD to $16,756 AUD

Retailer 1
-
$12,321 AUD
$8,635 USD
Price last confirmed 26 days ago
B+
Retailer 2
-
$12,611 AUD
$8,838 USD
View
B+
Retailer 3
-
$13,861 AUD
CA$13,492 CAD
View
Retailer 4
-
$14,135 AUD
$9,906 USD
View
Price last confirmed 22 days ago
B
Retailer 5
-
$15,022 AUD
$10,528 USD
View
Retailer 6
-
$15,312 AUD
$10,731 USD
View
Price last confirmed 26 days ago
B
Retailer 7
-
$16,756 AUD
$11,743 USD
View
Retailer 8
-
$17,668 AUD
$12,382 USD
View
Price last confirmed 24 days ago
Most Expensive
NZ Jewellers
f931565d-b274-4fea-ad34-fbd78b04fabd · Oct 6
$23,558 AUD
$16,510 USD
View
Price last confirmed 27 days ago
8 more retailers have this diamond
Prices start from $12,611 AUDSave up to $4,145 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
$12,611 AUD