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Marquise|Natural|GIA

1.50ct E SI1 Marquise Natural Diamond

EX • E/SI1 • GIA 5546565138

Certificate GIA 5546565138

Diamond specifications and retailer prices

From $14,082 AUD
$9,892 USD
As of October 31, 2026
Save $9,843 AUD (41%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $23,925 AUD at MOH London · As of November 1, 2026
View at MOH London

About this 1.5ct natural marquise diamond

This 1.5ct natural marquise sits in the one-and-a-half to two carat band, graded E 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 5546565138. Listed at 12 retailers as of October 31, 2026, with prices from $14,082 to $23,925, a $9,843 spread on the same certified stone. MOH London lists it at $23,925. 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
E
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceMedium
Crown angle39.97°
Pavilion angle37.22°
OriginNatural
Grading LabGIA
CertificateGIA 5546565138
Dimensions10.72 × 5.81 × 3.80 mm
L/W Ratio1.85
Top View
10.72 mm5.81 mm1.50 ctE / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceMedium
CertificateGIA 5546565138
Side View
Table 55.0%Crown 39.97°Girdle: ThickPavilion 37.22°Culet: NoneDepth 65.4%

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: Oct 31
Current: $23,925 AUD|Low: $14,082 AUD|High: $24,053 AUD|Avg: $18,012 AUD|-0.1%
MOH London
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 2, 2026
Retailer 12$14,082 AUD
Retailer 10$14,213 AUD
Retailer 11$15,126 AUD
Retailer 5$15,447 AUD
Retailer 14$15,551 AUD
Retailer 2$16,558 AUD
Retailer 15$16,996 AUD
Retailer 13$18,859 AUD
Retailer 3$18,958 AUD
Retailer 7$19,133 AUD
Retailer 9$19,304 AUD
Retailer 6$19,883 AUD
Retailer 4$20,152 AUD
Retailer 8$22,506 AUD
MOH London$23,925 AUD

12 data points across 15 retailers

12 retailers$14,082 AUD to $23,925 AUD

B+
Cheapest Retailer
-
$14,082 AUD
$9,892 USD
B+
Retailer 2
-
$14,213 AUD
$9,984 USD
View
B+
Retailer 3
-
$15,126 AUD
$10,625 USD
View
B+
Retailer 4
-
$15,447 AUD
$10,851 USD
View
B+
Retailer 5
-
$15,551 AUD
CA$15,172 CAD
View
B+
Retailer 6
-
$16,558 AUD
£9,158 GBP
View
B+
Retailer 7
-
$16,996 AUD
$11,939 USD
View
B
Retailer 8
-
$18,859 AUD
$13,247 USD
View
B
Retailer 9
-
$18,958 AUD
$13,317 USD
View
B+
Retailer 10
-
$19,304 AUD
€12,914 EUR
View
B
Retailer 11
-
$22,506 AUD
ZAR 255,395 ZAR
View
Most Expensive
B
MOH London
01F495AAD · Nov 1
$23,925 AUD
£13,233 GBP
View
11 more retailers have this diamond
Prices start from $14,082 AUDSave up to $9,843 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
$14,082 AUD