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Marquise|Natural|GIA

1.50ct I SI2 Marquise Natural Diamond

ID • I/SI2 • GIA 1555664423

Certificate GIA 1555664423

Diamond specifications and retailer prices

From $7,952 SGD
$6,220 USD
As of November 1, 2026
Save $6,860 SGD (46%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $14,812 SGD 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 I 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 1555664423. Listed at 14 retailers as of November 1, 2026, with prices from $7,952 to $14,812, a $6,860 spread on the same certified stone. MOH London lists it at $14,812. 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
I
Colour
SI2
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1555664423
Dimensions11.46 × 5.97 × 3.63 mm
L/W Ratio1.92
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Twinning Wisp, Natural
Top View
11.46 mm5.97 mm1.50 ctI / SI2
OriginNatural
CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 1555664423
Side View
Table 60.0%CrownGirdle: STK-THKPavilionCulet: NDepth 60.8%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $14,812 SGD|Low: $8,723 SGD|High: $14,990 SGD|Avg: $10,497 SGD|-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
November 2, 2026
Retailer 7$8,723 SGD
Retailer 12$8,859 SGD
Retailer 10$9,213 SGD
Retailer 6$9,923 SGD
Retailer 8$10,046 SGD
Retailer 5$10,047 SGD
Retailer 11$10,277 SGD
Retailer 4$10,726 SGD
Retailer 9$10,837 SGD
Retailer 3$11,084 SGD
Retailer 2$11,098 SGD
MOH London$14,812 SGD

41 data points across 12 retailers

14 retailers$7,952 SGD to $14,812 SGD

A
Cheapest Retailer
-
$7,952 SGD
$6,220 USD
B+
Retailer 2
-
$8,723 SGD
$6,823 USD
View
B+
Retailer 3
-
$8,859 SGD
CA$9,625 CAD
View
B+
Retailer 4
-
$9,213 SGD
$7,207 USD
View
B+
Retailer 5
-
$9,923 SGD
$7,762 USD
View
B+
Retailer 6
-
$10,046 SGD
$7,858 USD
View
B+
Retailer 7
-
$10,047 SGD
£6,188 GBP
View
B+
Retailer 8
-
$10,277 SGD
$8,039 USD
View
B
Retailer 9
-
$10,726 SGD
$8,390 USD
View
B
Retailer 10
-
$10,726 SGD
$8,390 USD
View
B
Retailer 11
-
$10,837 SGD
$8,477 USD
View
B
Retailer 12
-
$11,084 SGD
$8,670 USD
View
B
Retailer 13
-
$11,098 SGD
€8,268 EUR
View
Most Expensive
B
MOH London
D2AC85338 · Nov 1
$14,812 SGD
£9,123 GBP
View
13 more retailers have this diamond
Prices start from $7,952 SGDSave up to $6,860 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.

A
1.50ct Marquise
$7,952 SGD