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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 $12,646 SGD
$9,892 USD
As of October 30, 2026
Save $8,954 SGD (41%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $21,600 SGD at MOH London · As of October 29, 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 29, 2026, with prices from $12,646 to $21,600, a $8,954 spread on the same certified stone. MOH London lists it at $21,600. 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 30
Current: $21,600 SGD|Low: $12,646 SGD|High: $21,600 SGD|Avg: $16,169 SGD|+0.4%
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
October 31, 2026
Retailer 12$12,646 SGD
Retailer 10$12,764 SGD
Retailer 11$13,583 SGD
Retailer 5$13,872 SGD
Retailer 14$13,965 SGD
Retailer 8$14,869 SGD
Retailer 15$15,263 SGD
Retailer 13$16,935 SGD
Retailer 3$17,024 SGD
Retailer 7$17,182 SGD
Retailer 2$17,335 SGD
Retailer 6$17,855 SGD
Retailer 4$18,097 SGD
Retailer 9$20,103 SGD
MOH London$21,600 SGD

10 data points across 15 retailers

12 retailers$12,646 SGD to $21,600 SGD

B+
Cheapest Retailer
-
$12,646 SGD
$9,892 USD
B+
Retailer 2
-
$12,764 SGD
$9,984 USD
View
B+
Retailer 3
-
$13,583 SGD
$10,625 USD
View
B+
Retailer 4
-
$13,872 SGD
$10,851 USD
View
B+
Retailer 5
-
$13,965 SGD
CA$15,172 CAD
View
B+
Retailer 6
-
$14,869 SGD
£9,158 GBP
View
B+
Retailer 7
-
$15,263 SGD
$11,939 USD
View
B
Retailer 8
-
$16,935 SGD
$13,247 USD
View
B
Retailer 9
-
$17,024 SGD
$13,317 USD
View
B+
Retailer 10
-
$17,335 SGD
€12,914 EUR
View
B
Retailer 11
-
$20,103 SGD
ZAR 254,038 ZAR
View
Most Expensive
B
MOH London
01F495AAD · Oct 29
$21,600 SGD
£13,304 GBP
View
11 more retailers have this diamond
Prices start from $12,646 SGDSave up to $8,954 SGD

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
$12,646 SGD