Cushion|Natural|GIA

1.50ct K SI1 Cushion Natural Diamond

VG • K/SI1 • GIA 3555518161

Certificate GIA 3555518161

Diamond specifications and retailer prices

From $2,188 USD
As of November 6, 2026
Save $2,652 USD (55%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $4,840 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 very-good cut grade stated by the retailer rather than the lab and certified by GIA 3555518161. Listed at 13 retailers as of November 4, 2026, with prices from $2,188 to $4,840, a $2,652 spread on the same certified stone. MOH London lists it at $4,840. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.50
Carat
K
Color
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryVery Good
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 3555518161
Dimensions7.59 × 5.96 × 4.21 mm
L/W Ratio1.27
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Feather, Indented Natural
Top View
7.59 mm5.96 mm1.50 ctK / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceMedium
CertificateGIA 3555518161
Side View
Table 67.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 70.6%

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: $4,840 USD|Low: $2,163 USD|High: $4,935 USD|Avg: $3,104 USD|-1.9%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 7$2,188 USD
Retailer 2$2,327 USD
Retailer 6$2,566 USD
Retailer 8$2,901 USD
Retailer 9$3,038 USD
Retailer 4$3,053 USD
Retailer 10$3,160 USD
Retailer 3$3,377 USD
Retailer 5$3,541 USD
MOH London$4,840 USD

32 data points across 10 retailers

13 retailers$2,188 USD to $4,840 USD

A
Cheapest Retailer
-
$2,188 USD
A
Retailer 2
-
$2,327 USD
View
B+
Retailer 3
-
$2,566 USD
View
B+
Retailer 4
-
$2,724 USD
View
B+
Retailer 5
-
$2,725 USD
View
B+
Retailer 6
-
$2,897 USD
View
Retailer 7
-
$2,901 USD
View
Price last confirmed 21 days ago
B+
Retailer 8
-
$3,038 USD
View
B+
Retailer 9
-
$3,053 USD
View
B+
Retailer 10
-
$3,160 USD
View
B+
Retailer 11
-
$3,377 USD
View
B+
Retailer 12
-
$3,541 USD
View
Most Expensive
B
MOH London
94D18FCE6 · Nov 4
$4,840 USD
£3,811 GBP
View
12 more retailers have this diamond
Prices start from $2,188 USDSave up to $2,652 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
$2,188 USD