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Marquise|Natural|GIA

1.50ct I SI2 Marquise Natural Diamond

EX • I/SI2 • GIA 1559836585

Certificate GIA 1559836585

Diamond specifications and retailer prices

From $6,463 USD
As of November 6, 2026
Save $5,498 USD (46%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $11,961 USD at MOH London · As of November 7, 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 1559836585. Listed at 19 retailers as of November 6, 2026, with prices from $6,463 to $11,961, a $5,498 spread on the same certified stone. MOH London lists it at $11,961. 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
Color
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1559836585
Dimensions11.40 × 5.97 × 3.74 mm
L/W Ratio1.91
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Twinning Wisp, Crystal, Feather, Cavity, Needle, Indented Natural
Top View
11.40 mm5.97 mm1.50 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 1559836585
Side View
Table 58.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 62.6%

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 6
Current: $11,961 USD|Low: $7,077 USD|High: $12,170 USD|Avg: $8,581 USD|-0.5%
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
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Retailer 15
Retailer 16
Retailer 17
November 7, 2026
Retailer 17$7,077 USD
Retailer 5$7,488 USD
Retailer 13$7,488 USD
Retailer 10$7,776 USD
Retailer 12$8,040 USD
Retailer 16$8,064 USD
Retailer 15$8,131 USD
Retailer 3$8,150 USD
Retailer 6$8,352 USD
Retailer 7$8,690 USD
Retailer 8$8,690 USD
Retailer 2$8,755 USD
Retailer 4$8,807 USD
Retailer 14$8,978 USD
Retailer 9$8,980 USD
Retailer 11$10,469 USD
MOH London$11,961 USD

44 data points across 17 retailers

19 retailers$6,463 USD to $11,961 USD

A
Cheapest Retailer
-
$6,463 USD
B+
Retailer 2
-
$7,077 USD
View
B+
Retailer 3
-
$7,199 USD
View
B+
Retailer 4
-
$7,488 USD
View
B+
Retailer 5
-
$7,488 USD
View
B+
Retailer 6
-
$7,776 USD
View
B+
Retailer 7
-
$8,040 USD
View
B+
Retailer 8
-
$8,064 USD
View
B+
Retailer 9
-
$8,131 USD
View
B+
Retailer 10
-
$8,150 USD
View
B+
Retailer 11
-
$8,352 USD
View
B
Retailer 12
-
$8,690 USD
View
B
Retailer 13
-
$8,690 USD
View
B
Retailer 14
-
$8,755 USD
View
B
Retailer 15
-
$8,807 USD
View
B
Retailer 16
-
$8,978 USD
View
B
Retailer 17
-
$8,980 USD
View
B
Retailer 18
-
$10,469 USD
View
Most Expensive
B
MOH London
8100B88D8 · Nov 7
$11,961 USD
£9,418 GBP
View
18 more retailers have this diamond
Prices start from $6,463 USDSave up to $5,498 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.

A
1.50ct Marquise
$6,463 USD