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Cushion|Natural|GIA

1.50ct K SI2 Cushion Natural Diamond

EX • K/SI2 • GIA 1559373415

Certificate GIA 1559373415

Diamond specifications and retailer prices

From $2,521 USD
As of November 6, 2026
Save $3,057 USD (55%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $5,578 USD at MOH London · As of November 4, 2026
View at MOH London

About this 1.5ct natural cushion diamond

This 1.5ct natural cushion sits in the one-and-a-half to two carat band, graded K colour (faint-tinted) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1559373415. Listed at 12 retailers as of November 4, 2026, with prices from $2,521 to $5,578, a $3,057 spread on the same certified stone. MOH London lists it at $5,578. 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
K
Color
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryGood
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1559373415
Dimensions7.65 × 5.90 × 4.11 mm
L/W Ratio1.30
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Feather, Crystal, Cloud, Cavity, Indented Natural
Top View
7.65 mm5.90 mm1.50 ctK / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryGood
FluorescenceNone
CertificateGIA 1559373415
Side View
Table 68.0%CrownGirdle: MED-ETKPavilionCulet: NoneDepth 69.7%

Caratlytics Score

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

Price History

Last verified: Nov 6
Current: $5,578 USD|Low: $2,508 USD|High: $5,695 USD|Avg: $3,506 USD|-2.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 10$2,521 USD
Retailer 2$2,664 USD
Retailer 7$2,975 USD
Retailer 4$3,333 USD
Retailer 3$3,365 USD
Retailer 8$3,463 USD
Retailer 11$3,488 USD
Retailer 6$3,506 USD
Retailer 9$3,570 USD
Retailer 5$3,893 USD
MOH London$5,578 USD

28 data points across 11 retailers

12 retailers$2,521 USD to $5,578 USD

A
Cheapest Retailer
-
$2,521 USD
A
Retailer 2
-
$2,664 USD
View
A
Retailer 3
-
$2,975 USD
View
B+
Retailer 4
-
$3,132 USD
View
B+
Retailer 5
-
$3,333 USD
View
Retailer 6
-
$3,365 USD
View
Price last confirmed 8 days ago
B+
Retailer 7
-
$3,463 USD
View
B+
Retailer 8
-
$3,488 USD
View
B+
Retailer 9
-
$3,506 USD
View
B+
Retailer 10
-
$3,570 USD
View
B+
Retailer 11
-
$3,893 USD
View
Most Expensive
B
MOH London
9336CC951 · Nov 4
$5,578 USD
£4,392 GBP
View
11 more retailers have this diamond
Prices start from $2,521 USDSave up to $3,057 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 Cushion
$2,521 USD