Cushion|Natural|GIA

1.50ct K SI1 Cushion Natural Diamond

EX • K/SI1 • GIA 1549696767

Certificate GIA 1549696767

Diamond specifications and retailer prices

From $1,664 USD
As of November 6, 2026
Save $2,599 USD (61%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $4,263 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 SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1549696767. Listed at 19 retailers as of November 4, 2026, with prices from $1,664 to $4,263, a $2,599 spread on the same certified stone. MOH London lists it at $4,263. 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
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Pavilion angle39.4°
OriginNatural
Grading LabGIA
CertificateGIA 1549696767
Dimensions7.22 × 6.21 × 4.29 mm
L/W Ratio1.16
Girdle conditionFaceted
Top View
7.22 mm6.21 mm1.50 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1549696767
Side View
Table 69.0%CrownGirdle: THK-VTKPavilion 39.4°Culet: NoneDepth 69.1%

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: $4,263 USD|Low: $1,664 USD|High: $4,756 USD|Avg: $2,733 USD|-10.4%
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
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
November 6, 2026
Retailer 12$1,664 USD
Retailer 2$2,005 USD
Retailer 3$2,105 USD
Retailer 13$2,107 USD
Retailer 16$2,318 USD
Retailer 15$2,351 USD
Retailer 17$2,360 USD
Retailer 5$2,367 USD
Retailer 9$2,419 USD
Retailer 7$2,423 USD
Retailer 4$2,425 USD
Retailer 6$2,451 USD
Retailer 10$2,520 USD
Retailer 8$2,676 USD
Retailer 14$2,697 USD
Retailer 18$2,978 USD
Retailer 11$3,603 USD
MOH London$4,263 USD

22 data points across 18 retailers

19 retailers$1,664 USD to $4,263 USD

A
Cheapest Retailer
-
$1,664 USD
A
Retailer 2
-
$2,005 USD
View
Final sale: no returns
A
Retailer 3
-
$2,105 USD
View
A
Retailer 4
-
$2,107 USD
View
A
Retailer 5
-
$2,318 USD
View
A
Retailer 6
-
$2,351 USD
View
A
Retailer 7
-
$2,360 USD
View
A
Retailer 8
-
$2,367 USD
View
Retailer 9
-
$2,419 USD
View
Price last confirmed 8 days ago
Retailer 10
-
$2,423 USD
View
Price last confirmed 9 days ago
A
Retailer 11
-
$2,425 USD
View
Retailer 12
-
$2,451 USD
View
Price last confirmed 9 days ago
Retailer 13
-
$2,520 USD
View
Price last confirmed 7 days ago
Retailer 14
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$2,676 USD
View
Price last confirmed 17 days ago
A
Retailer 15
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$2,697 USD
View
B+
Retailer 16
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$2,917 USD
View
A
Retailer 17
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$2,978 USD
View
B+
Retailer 18
-
$3,603 USD
View
Most Expensive
B+
MOH London
6DCC2DB2F · Nov 4
$4,263 USD
£3,357 GBP
View
18 more retailers have this diamond
Prices start from $1,664 USDSave up to $2,599 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
$1,664 USD