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Marquise|Natural|GIA

1.50ct H SI2 Marquise Natural Diamond

EX • H/SI2 • GIA 1558587559

Certificate GIA 1558587559

Diamond specifications and retailer prices

From $10,536 AUD
As of November 6, 2026
Save $12,116 AUD (53%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $22,652 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 H colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1558587559. Listed at 18 retailers as of November 5, 2026, with prices from $10,536 to $22,652, a $12,116 spread on the same certified stone. NZ Jewellers lists it at $22,652. 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
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1558587559
Dimensions11.11 × 5.94 × 3.79 mm
L/W Ratio1.87
Girdle conditionVery Thin to Very Thick
Key to symbols
Twinning Wisp, Feather, Cavity, Natural
Top View
11.11 mm5.94 mm1.50 ctH / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 1558587559
Side View
Table 60.0%CrownGirdle: VTK-VTKPavilionCulet: NoneDepth 63.8%

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 6
Current: $22,652 AUD|Low: $10,672 AUD|High: $23,468 AUD|Avg: $14,342 AUD|-3.5%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
November 6, 2026
Retailer 14$10,672 AUD
Retailer 2$10,707 AUD
Retailer 16$11,230 AUD
Retailer 15$11,326 AUD
Retailer 17$12,270 AUD
Retailer 8$12,441 AUD
Retailer 12$12,637 AUD
Retailer 3$12,773 AUD
Retailer 9$12,906 AUD
Retailer 10$13,049 AUD
Retailer 5$13,134 AUD
Retailer 4$13,579 AUD
Retailer 6$13,579 AUD
Retailer 11$14,030 AUD
Retailer 13$14,158 AUD
Retailer 7$19,501 AUD
NZ Jewellers$22,652 AUD

33 data points across 17 retailers

18 retailers$10,536 AUD to $22,652 AUD

B+
Cheapest Retailer
-
$10,536 AUD
B+
Retailer 2
-
$10,672 AUD
View
B+
Retailer 3
-
$10,707 AUD
View
B+
Retailer 4
-
$11,230 AUD
View
B+
Retailer 5
-
$11,326 AUD
View
Final sale: no returns
B+
Retailer 6
-
$12,270 AUD
View
B
Retailer 7
-
$12,441 AUD
View
B+
Retailer 8
-
$12,637 AUD
View
B
Retailer 9
-
$12,773 AUD
View
B
Retailer 10
-
$12,906 AUD
View
B+
Retailer 11
-
$13,049 AUD
View
B
Retailer 12
-
$13,134 AUD
View
B
Retailer 13
-
$13,579 AUD
View
B
Retailer 14
-
$13,579 AUD
View
B
Retailer 15
-
$14,030 AUD
View
B+
Retailer 16
-
$14,158 AUD
View
B
Retailer 17
-
$19,501 AUD
View
Most Expensive
B
NZ Jewellers
c1156e61-ffd4-437e-ac01-b8778420eda8 · Nov 5
$22,652 AUD
$15,564 USD
View
17 more retailers have this diamond
Prices start from $10,536 AUDSave up to $12,116 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
$10,536 AUD