Cushion|Natural|GIA

1.50ct I SI1 Cushion Natural Diamond

GD • I/SI1 • GIA 1555054425

Certificate GIA 1555054425

Diamond specifications and retailer prices

From $3,340 USD
As of November 6, 2026
Save $3,853 USD (54%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $7,193 USD at MOH London · As of November 1, 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 I colour (near-colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 1555054425. Listed at 21 retailers as of November 1, 2026, with prices from $3,340 to $7,193, a $3,853 spread on the same certified stone. MOH London lists it at $7,193. 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
I
Color
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 1555054425
Dimensions7.45 × 5.73 × 4.17 mm
L/W Ratio1.30
Girdle conditionFaceted
Top View
7.45 mm5.73 mm1.50 ctI / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1555054425
Side View
Table 68.0%CrownGirdle: STK-VTKPavilionCulet: NDepth 72.8%

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: $7,193 USD|Low: $3,340 USD|High: $7,386 USD|Avg: $4,627 USD|-2.6%
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
Retailer 19
November 6, 2026
Retailer 17$3,340 USD
Retailer 8$3,855 USD
Retailer 16$3,872 USD
Retailer 18$3,935 USD
Retailer 9$3,954 USD
Retailer 10$3,954 USD
Retailer 3$4,075 USD
Retailer 19$4,080 USD
Retailer 7$4,167 USD
Retailer 2$4,172 USD
Retailer 13$4,254 USD
Retailer 11$4,280 USD
Retailer 6$4,452 USD
Retailer 14$4,452 USD
Retailer 5$4,846 USD
Retailer 12$4,975 USD
Retailer 15$5,394 USD
Retailer 4$7,068 USD
MOH London$7,193 USD

20 data points across 19 retailers

21 retailers$3,340 USD to $7,193 USD

A
Cheapest Retailer
-
$3,340 USD
B+
Retailer 2
-
$3,855 USD
View
B+
Retailer 3
-
$3,872 USD
View
B+
Retailer 4
-
$3,935 USD
View
Retailer 5
-
$3,954 USD
View
Price last confirmed 9 days ago
Retailer 6
-
$3,954 USD
View
Price last confirmed 10 days ago
B+
Retailer 7
-
$4,075 USD
View
B+
Retailer 8
-
$4,080 USD
View
Final sale: no returns
B+
Retailer 9
-
$4,167 USD
View
B+
Retailer 10
-
$4,172 USD
View
B+
Retailer 11
-
$4,254 USD
View
Retailer 12
-
$4,280 USD
View
Price last confirmed 8 days ago
B+
Retailer 13
-
$4,452 USD
View
B+
Retailer 14
-
$4,452 USD
View
Retailer 15
-
$4,715 USD
View
Price last confirmed 29 days ago
B+
Retailer 16
-
$4,795 USD
View
B+
Retailer 17
-
$4,846 USD
View
B+
Retailer 18
-
$4,975 USD
View
B
Retailer 19
-
$5,394 USD
View
B
Retailer 20
-
$7,068 USD
View
Most Expensive
B
MOH London
CE8DDD0F8 · Nov 1
$7,193 USD
£5,664 GBP
View
20 more retailers have this diamond
Prices start from $3,340 USDSave up to $3,853 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
$3,340 USD