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Marquise|Natural|GIA

1.50ct H SI2 Marquise Natural Diamond

EX • H/SI2 • GIA 1555250273

Certificate GIA 1555250273

Diamond specifications and retailer prices

From $10,115 AUD
As of November 4, 2026
Save $8,941 AUD (47%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $22,933 AUD at NZ Jewellers · As of September 21, 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 1555250273. Listed at 17 retailers as of November 4, 2026, with a 88% 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
H
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1555250273
Dimensions11.01 × 5.88 × 3.78 mm
L/W Ratio1.87
Girdle conditionVery Thick to Extremely Thick
Culet sizeNone
Key to symbols
Crystal, Cloud, Feather, Needle, Natural
Top View
11.01 mm5.88 mm1.50 ctH / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1555250273
Side View
Table 57.0%CrownGirdle: VTK-ETKPavilionCulet: NoneDepth 64.3%

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 4
Current: $12,714 AUD|Low: $9,082 AUD|High: $19,339 AUD|Avg: $12,450 AUD
Retailer 1
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
November 6, 2026
Retailer 11$10,115 AUD
Retailer 7$10,329 AUD
Retailer 6$10,662 AUD
Retailer 4$10,736 AUD
Retailer 12$10,898 AUD
Retailer 5$11,033 AUD
Retailer 2$11,466 AUD
Retailer 15$12,218 AUD
Retailer 9$12,671 AUD
Retailer 3$12,675 AUD
Retailer 1$12,714 AUD
Retailer 14$12,893 AUD
Retailer 13$13,885 AUD
Retailer 8$14,157 AUD
Retailer 10$19,056 AUD

20 data points across 15 retailers

17 retailers$10,115 AUD to $19,056 AUD

B+
Cheapest Retailer
-
$10,115 AUD
B+
Retailer 2
-
$10,699 AUD
View
B+
Retailer 3
-
$10,736 AUD
View
B+
Retailer 4
-
$10,898 AUD
View
B+
Retailer 5
-
$11,033 AUD
View
B+
Retailer 6
-
$12,218 AUD
View
Retailer 7
-
$12,422 AUD
View
Price last confirmed 45 days ago
B+
Retailer 8
-
$12,671 AUD
View
B
Retailer 9
-
$12,675 AUD
View
B
Retailer 10
-
$12,714 AUD
View
Retailer 11
-
$12,893 AUD
View
Price last confirmed 14 days ago
B+
Retailer 12
-
$13,885 AUD
View
B+
Retailer 13
-
$14,157 AUD
View
Retailer 14
-
$14,333 AUD
View
Price last confirmed 66 days ago
Retailer 15
-
$14,333 AUD
View
Price last confirmed 45 days ago
B
Retailer 16
-
$19,056 AUD
View
Most Expensive
NZ Jewellers
b22b4c0b-a7d7-4d7e-a4ae-a2a20d2ee5fd · Sep 21
$22,933 AUD
$15,757 USD
View
Price last confirmed 46 days ago
16 more retailers have this diamond
Prices start from $10,115 AUDSave up to $8,941 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
$10,115 AUD