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Marquise|Natural|GIA

1.50ct H SI1 Marquise Natural Diamond

EX • H/SI1 • GIA 5546345302

Certificate GIA 5546345302

Diamond specifications and retailer prices

From $13,927 AUD
$9,760 USD
As of November 2, 2026
Save $11,624 AUD (45%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $25,550 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 H 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 5546345302. Listed at 15 retailers as of October 30, 2026, with prices from $13,927 to $25,550, a $11,624 spread on the same certified stone. NZ Jewellers lists it at $25,550. 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
H
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 5546345302
Dimensions11.24 × 5.83 × 3.84 mm
L/W Ratio1.93
Top View
11.24 mm5.83 mm1.50 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 5546345302
Side View
Table 61.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 65.8%

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: $25,550 AUD|Low: $13,868 AUD|High: $25,550 AUD|Avg: $18,395 AUD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 2, 2026
Retailer 9$13,927 AUD
Retailer 6$15,328 AUD
Retailer 10$16,608 AUD
Retailer 4$16,734 AUD
Retailer 7$16,863 AUD
Retailer 2$17,272 AUD
Retailer 8$17,511 AUD
Retailer 3$19,311 AUD
Retailer 5$23,942 AUD
NZ Jewellers$25,550 AUD

43 data points across 10 retailers

15 retailers$13,927 AUD to $25,550 AUD

B+
Cheapest Retailer
-
$13,927 AUD
$9,760 USD
B+
Retailer 2
-
$14,363 AUD
$10,066 USD
View
B+
Retailer 3
-
$14,543 AUD
View
B
Retailer 4
-
$15,090 AUD
$10,576 USD
View
B
Retailer 5
-
$15,328 AUD
$10,742 USD
View
Final sale: no returns
B
Retailer 6
-
$16,608 AUD
$11,639 USD
View
B
Retailer 7
-
$16,734 AUD
£9,235 GBP
View
B
Retailer 8
-
$16,863 AUD
$11,818 USD
View
B
Retailer 9
-
$17,272 AUD
£9,531 GBP
View
B
Retailer 10
-
$17,511 AUD
$12,272 USD
View
B
Retailer 11
-
$18,437 AUD
$12,921 USD
View
B
Retailer 12
-
$19,162 AUD
$13,429 USD
View
B
Retailer 13
-
$19,311 AUD
€12,889 EUR
View
B
Retailer 14
-
$23,942 AUD
£13,212 GBP
View
Most Expensive
B
NZ Jewellers
bd99867b-f986-4c3e-8015-60d6ae55dbfd · Oct 30
$25,550 AUD
$17,906 USD
View
14 more retailers have this diamond
Prices start from $13,927 AUDSave up to $11,624 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
$13,927 AUD