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Marquise|Natural|GIA

1.50ct I SI1 Marquise Natural Diamond

EX • I/SI1 • GIA 5543246564

Certificate GIA 5543246564

Diamond specifications and retailer prices

From $12,601 AUD
$8,831 USD
As of November 1, 2026
Save $9,830 AUD (44%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $22,431 AUD at NZ Jewellers · As of October 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 I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 5543246564. Listed at 16 retailers as of October 30, 2026, with prices from $12,601 to $22,431, a $9,830 spread on the same certified stone. NZ Jewellers lists it at $22,431. 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
I
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 5543246564
Dimensions12.38 × 5.80 × 3.59 mm
L/W Ratio2.13
Top View
12.38 mm5.80 mm1.50 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5543246564
Side View
Table 61.0%CrownGirdle: Ext. ThickPavilionCulet: NDepth 61.9%

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 1
Current: $22,431 AUD|Low: $13,459 AUD|High: $22,431 AUD|Avg: $16,978 AUD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 1, 2026
Retailer 8$13,459 AUD
Retailer 10$14,580 AUD
Retailer 5$14,731 AUD
Retailer 9$14,804 AUD
Retailer 3$14,805 AUD
Retailer 4$15,272 AUD
Retailer 11$16,823 AUD
Retailer 7$16,957 AUD
Retailer 6$19,772 AUD
Retailer 2$21,019 AUD
NZ Jewellers$22,431 AUD

30 data points across 11 retailers

16 retailers$12,601 AUD to $22,431 AUD

B+
Cheapest Retailer
-
$12,601 AUD
$8,831 USD
B+
Retailer 2
-
$12,611 AUD
$8,838 USD
View
B
Retailer 3
-
$13,459 AUD
$9,432 USD
View
B
Retailer 4
-
$13,571 AUD
$9,511 USD
View
B
Retailer 5
-
$14,352 AUD
$10,058 USD
View
B+
Retailer 6
-
$14,580 AUD
$10,218 USD
View
B+
Retailer 7
-
$14,731 AUD
£8,129 GBP
View
B
Retailer 8
-
$14,804 AUD
$10,375 USD
View
Retailer 9
-
$14,805 AUD
View
Price last confirmed 9 days ago
B
Retailer 10
-
$15,272 AUD
£8,428 GBP
View
B
Retailer 11
-
$16,823 AUD
$11,790 USD
View
B
Retailer 12
-
$16,957 AUD
€11,318 EUR
View
Retailer 13
-
$17,711 AUD
$12,412 USD
View
Price last confirmed 10 days ago
B
Retailer 14
-
$19,772 AUD
ZAR 223,860 ZAR
View
B
Retailer 15
-
$21,019 AUD
£11,599 GBP
View
Most Expensive
B
NZ Jewellers
d80cf3e7-7dbd-4a31-8e40-ad03c8d18939 · Oct 30
$22,431 AUD
$15,720 USD
View
15 more retailers have this diamond
Prices start from $12,601 AUDSave up to $9,830 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
$12,601 AUD