Cushion|Natural|GIA

1.50ct K SI1 Cushion Natural Diamond

VG • K/SI1 • GIA 2556551357

Certificate GIA 2556551357

Diamond specifications and retailer prices

From $2,560 USD
As of November 6, 2026
Save $3,102 USD (55%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $5,662 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 2556551357. Listed at 14 retailers as of November 4, 2026, with prices from $2,560 to $5,662, a $3,102 spread on the same certified stone. MOH London lists it at $5,662. 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
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2556551357
Dimensions8.26 × 5.54 × 3.93 mm
L/W Ratio1.49
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Cloud, Needle, Indented Natural, Natural
Top View
8.26 mm5.54 mm1.50 ctK / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2556551357
Side View
Table 62.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 70.9%

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: $5,662 USD|Low: $2,560 USD|High: $5,743 USD|Avg: $3,665 USD|-1.4%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 9$2,560 USD
Retailer 2$2,705 USD
Retailer 6$3,022 USD
Retailer 3$3,293 USD
Retailer 7$3,515 USD
Retailer 10$3,539 USD
Retailer 8$3,647 USD
Retailer 4$3,952 USD
Retailer 5$4,143 USD
MOH London$5,662 USD

26 data points across 10 retailers

14 retailers$2,560 USD to $5,662 USD

A
Cheapest Retailer
-
$2,560 USD
A
Retailer 2
-
$2,705 USD
View
B+
Retailer 3
-
$3,022 USD
View
B+
Retailer 4
-
$3,181 USD
View
B+
Retailer 5
-
$3,185 USD
View
B+
Retailer 6
-
$3,293 USD
View
B+
Retailer 7
-
$3,372 USD
View
Retailer 8
-
$3,416 USD
View
Price last confirmed 21 days ago
B+
Retailer 9
-
$3,515 USD
View
B+
Retailer 10
-
$3,539 USD
View
B+
Retailer 11
-
$3,647 USD
View
B+
Retailer 12
-
$3,952 USD
View
B
Retailer 13
-
$4,143 USD
View
Most Expensive
B
MOH London
B558C4967 · Nov 4
$5,662 USD
£4,458 GBP
View
13 more retailers have this diamond
Prices start from $2,560 USDSave up to $3,102 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
$2,560 USD