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Marquise|Natural|GIA

1.50ct F SI1 Marquise Natural Diamond

EX • F/SI1 • GIA 1457090445

Certificate GIA 1457090445

Diamond specifications and retailer prices

From $15,593 AUD
As of November 6, 2026
Save $13,000 AUD (45%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $28,593 AUD at NZ Jewellers · As of November 5, 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 1457090445. Listed at 12 retailers as of November 5, 2026, with prices from $15,593 to $28,593, a $13,000 spread on the same certified stone. NZ Jewellers lists it at $28,593. 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
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1457090445
Dimensions11.68 × 6.07 × 3.50 mm
L/W Ratio1.92
Girdle conditionFaceted
Culet sizeNone
Cert comments
Clouds are not shown. Pinpoints are not shown.
Top View
11.68 mm6.07 mm1.50 ctF / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 1457090445
Side View
Table 59.0%CrownGirdle: MED-ETKPavilionCulet: NoneDepth 57.6%

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: $18,562 AUD|Low: $15,593 AUD|High: $27,114 AUD|Avg: $19,829 AUD|-1.4%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 7, 2026
Retailer 7$15,593 AUD
Retailer 5$17,117 AUD
Retailer 1$18,562 AUD
Retailer 6$18,871 AUD
Retailer 2$19,090 AUD
Retailer 4$21,527 AUD
Retailer 3$26,721 AUD

44 data points across 7 retailers

12 retailers$15,593 AUD to $28,593 AUD

B+
Cheapest Retailer
-
$15,593 AUD
B
Retailer 2
-
$16,073 AUD
View
B+
Retailer 3
-
$16,932 AUD
View
B+
Retailer 4
-
$17,117 AUD
View
Final sale: no returns
B+
Retailer 5
-
$18,562 AUD
View
B
Retailer 6
-
$18,585 AUD
View
B
Retailer 7
-
$18,871 AUD
View
B
Retailer 8
-
$19,090 AUD
View
B
Retailer 9
-
$21,444 AUD
View
B
Retailer 10
-
$21,527 AUD
View
B
Retailer 11
-
$26,721 AUD
View
Most Expensive
B
NZ Jewellers
509fd407-2f62-48bc-9d7b-a8d631103646 · Nov 5
$28,593 AUD
$19,646 USD
View
11 more retailers have this diamond
Prices start from $15,593 AUDSave up to $13,000 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
$15,593 AUD