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Cushion|Natural|GIA

1.50ct I SI1 Cushion Natural Diamond

ID • I/SI1 • GIA 1545301815

Certificate GIA 1545301815

Diamond specifications and retailer prices

From $3,290 CAD
HK$18,400 HKD
As of November 1, 2026
Save $3,955 CAD (55%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $7,245 CAD 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 top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1545301815. Listed at 21 retailers as of November 1, 2026, with prices from $3,290 to $7,245, a $3,955 spread on the same certified stone. MOH London lists it at $7,245. 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
I
Color
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38°
Pavilion angle35.9°
OriginNatural
Grading LabGIA
CertificateGIA 1545301815
Dimensions6.47 × 6.44 × 4.41 mm
L/W Ratio1.00
Girdle conditionFaceted
Top View
6.47 mm6.44 mm1.50 ctI / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1545301815
Side View
Table 64.0%Crown 38°Girdle: MED-STKPavilion 35.9°Culet: NoneDepth 68.4%

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 1
Current: $7,245 CAD|Low: $3,254 CAD|High: $7,332 CAD|Avg: $4,316 CAD|-1.2%
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 1, 2026
Retailer 14$3,290 CAD
Retailer 5$3,320 CAD
Retailer 16$3,446 CAD
Retailer 9$3,515 CAD
Retailer 7$3,622 CAD
Retailer 6$3,848 CAD
Retailer 19$3,869 CAD
Retailer 4$3,914 CAD
Retailer 8$3,924 CAD
Retailer 2$4,111 CAD
Retailer 3$4,121 CAD
Retailer 17$4,121 CAD
Retailer 18$4,261 CAD
Retailer 12$4,527 CAD
Retailer 10$4,628 CAD
Retailer 15$5,072 CAD
Retailer 11$5,136 CAD
Retailer 13$5,325 CAD
MOH London$7,245 CAD

27 data points across 19 retailers

21 retailers$3,290 CAD to $7,245 CAD

A
Cheapest Retailer
-
$3,290 CAD
HK$18,400 HKD
A
Retailer 2
-
$3,320 CAD
$2,377 USD
View
A
Retailer 3
-
$3,446 CAD
$2,467 USD
View
A
Retailer 4
-
$3,515 CAD
$2,516 USD
View
A
Retailer 5
-
$3,622 CAD
$2,593 USD
View
Final sale: no returns
A
Retailer 6
-
$3,633 CAD
A$4,001 AUD
View
A
Retailer 7
-
$3,848 CAD
$2,755 USD
View
A
Retailer 8
-
$3,869 CAD
$2,770 USD
View
A
Retailer 9
-
$3,914 CAD
$2,802 USD
View
A
Retailer 10
-
$3,924 CAD
$2,809 USD
View
A
Retailer 11
-
$4,111 CAD
£2,317 GBP
View
A
Retailer 12
-
$4,121 CAD
$2,950 USD
View
A
Retailer 13
-
$4,121 CAD
$2,950 USD
View
A
Retailer 14
-
$4,261 CAD
$3,050 USD
View
A
Retailer 15
-
$4,527 CAD
£2,552 GBP
View
Retailer 16
-
$4,628 CAD
A$5,097 AUD
View
Price last confirmed 24 days ago
Retailer 17
-
$5,029 CAD
$3,600 USD
View
Price last confirmed 9 days ago
A
Retailer 18
-
$5,072 CAD
€3,458 EUR
View
A
Retailer 19
-
$5,136 CAD
$3,677 USD
View
A
Retailer 20
-
$5,325 CAD
ZAR 61,581 ZAR
View
Most Expensive
B+
MOH London
64A723D81 · Nov 1
$7,245 CAD
£4,084 GBP
View
20 more retailers have this diamond
Prices start from $3,290 CADSave up to $3,955 CAD

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
$3,290 CAD