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Marquise|Natural|GIA

1.50ct D SI1 Marquise Natural Diamond

ID • D/SI1 • GIA 1549494456

Certificate GIA 1549494456

Diamond specifications and retailer prices

From $14,811 SGD
As of November 6, 2026
Save $10,726 SGD (42%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $25,538 SGD at MOH London · As of November 4, 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 D 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 1549494456. Listed at 14 retailers as of November 4, 2026, with prices from $14,811 to $25,538, a $10,726 spread on the same certified stone. MOH London lists it at $25,538. 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
D
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 1549494456
Dimensions11.44 × 5.88 × 3.74 mm
L/W Ratio1.95
Girdle conditionFaceted
Culet sizeNone
Cert comments
Pinpoints are not shown.
Top View
11.44 mm5.88 mm1.50 ctD / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1549494456
Side View
Table 57.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 63.6%

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: $25,538 SGD|Low: $14,811 SGD|High: $25,915 SGD|Avg: $19,023 SGD|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 6$14,811 SGD
Retailer 4$15,711 SGD
Retailer 5$17,489 SGD
Retailer 3$17,500 SGD
Retailer 8$17,762 SGD
Retailer 10$18,445 SGD
Retailer 9$18,569 SGD
Retailer 2$20,541 SGD
Retailer 7$23,226 SGD
MOH London$25,538 SGD

43 data points across 10 retailers

14 retailers$14,811 SGD to $25,538 SGD

B+
Cheapest Retailer
-
$14,811 SGD
B+
Retailer 2
-
$15,363 SGD
View
B+
Retailer 3
-
$15,597 SGD
View
B+
Retailer 4
-
$15,711 SGD
View
Final sale: no returns
B+
Retailer 5
-
$15,850 SGD
View
B+
Retailer 6
-
$17,489 SGD
View
B+
Retailer 7
-
$17,500 SGD
View
B+
Retailer 8
-
$17,762 SGD
View
B+
Retailer 9
-
$18,445 SGD
View
B
Retailer 10
-
$18,569 SGD
View
B
Retailer 11
-
$19,428 SGD
View
B
Retailer 12
-
$20,541 SGD
View
B
Retailer 13
-
$23,226 SGD
View
Most Expensive
B
MOH London
4652BB7B6 · Nov 4
$25,538 SGD
£15,690 GBP
View
13 more retailers have this diamond
Prices start from $14,811 SGDSave up to $10,726 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
$14,811 SGD