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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 $11,557 USD
As of October 31, 2026
Save $8,423 USD (42%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $19,980 USD 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 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 October 31, 2026, with prices from $11,557 to $19,980, a $8,423 spread on the same certified stone. MOH London lists it at $19,980. 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
Color
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: Oct 31
Current: $19,980 USD|Low: $11,426 USD|High: $20,221 USD|Avg: $14,815 USD|-0.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 2, 2026
Retailer 6$11,557 USD
Retailer 4$12,259 USD
Retailer 5$13,646 USD
Retailer 3$13,791 USD
Retailer 8$13,859 USD
Retailer 10$14,392 USD
Retailer 9$14,489 USD
Retailer 2$16,114 USD
Retailer 7$18,123 USD
MOH London$19,980 USD

43 data points across 10 retailers

14 retailers$11,557 USD to $19,980 USD

B+
Cheapest Retailer
-
$11,557 USD
B+
Retailer 2
-
$11,987 USD
View
B+
Retailer 3
-
$12,170 USD
A$18,723 AUD
View
B+
Retailer 4
-
$12,259 USD
View
Final sale: no returns
B+
Retailer 5
-
$12,367 USD
View
B+
Retailer 6
-
$13,646 USD
View
B+
Retailer 7
-
$13,791 USD
£10,859 GBP
View
B+
Retailer 8
-
$13,859 USD
View
B+
Retailer 9
-
$14,392 USD
View
B
Retailer 10
-
$14,489 USD
View
B
Retailer 11
-
$15,159 USD
View
B
Retailer 12
-
$16,114 USD
€15,347 EUR
View
B
Retailer 13
-
$18,123 USD
View
Most Expensive
B
MOH London
4652BB7B6 · Nov 1
$19,980 USD
£15,732 GBP
View
13 more retailers have this diamond
Prices start from $11,557 USDSave up to $8,423 USD

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
$11,557 USD