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Cushion|Natural|GIA

1.50ct I SI1 Cushion Natural Diamond

GD • I/SI1 • GIA 2458259458

Shape and cutting style on the report: Cushion modified brilliant

Certificate GIA 2458259458

Diamond specifications and retailer prices

From $10,484 CAD
$7,505 USD
As of October 31, 2026
Save $8,094 CAD (44%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $18,578 CAD at MOH London · As of October 29, 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 2458259458. Listed at 22 retailers as of October 29, 2026, with prices from $10,484 to $18,578, a $8,094 spread on the same certified stone. MOH London lists it at $18,578. 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
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2458259458
Dimensions7.42 × 6.03 × 4.12 mm
L/W Ratio1.23
Top View
7.42 mm6.03 mm1.50 ctI / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2458259458
Side View
Table 64.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 68.3%

Caratlytics Score

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B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: $18,578 CAD|Low: $9,861 CAD|High: $18,702 CAD|Avg: $13,436 CAD|+0.4%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 1, 2026
Retailer 9$10,484 CAD
Retailer 6$10,547 CAD
Retailer 7$11,832 CAD
Retailer 8$11,832 CAD
Retailer 2$12,931 CAD
Retailer 5$12,990 CAD
Retailer 4$14,654 CAD
Retailer 3$17,383 CAD
MOH London$18,578 CAD

43 data points across 9 retailers

22 retailers$10,484 CAD to $18,578 CAD

B
Cheapest Retailer
-
$10,484 CAD
$7,505 USD
Retailer 2
-
$10,547 CAD
$7,550 USD
View
Price last confirmed 13 days ago
B
Retailer 3
-
$11,017 CAD
$7,887 USD
View
B
Retailer 4
-
$11,062 CAD
A$12,183 AUD
View
B
Retailer 5
-
$11,079 CAD
$7,931 USD
View
B
Retailer 6
-
$11,405 CAD
$8,165 USD
View
B
Retailer 7
-
$11,543 CAD
View
B
Retailer 8
-
$11,762 CAD
$8,420 USD
View
B
Retailer 9
-
$11,832 CAD
$8,470 USD
View
B
Retailer 10
-
$11,832 CAD
$8,470 USD
View
Final sale: no returns
B
Retailer 11
-
$11,931 CAD
$8,541 USD
View
B
Retailer 12
-
$12,931 CAD
£7,289 GBP
View
Retailer 13
-
$12,990 CAD
A$14,307 AUD
View
Price last confirmed 9 days ago
B
Retailer 14
-
$13,192 CAD
$9,444 USD
View
C
Retailer 15
-
$13,611 CAD
$9,744 USD
View
C
Retailer 16
-
$13,997 CAD
$10,020 USD
View
C
Retailer 17
-
$13,997 CAD
$10,020 USD
View
C
Retailer 18
-
$14,458 CAD
$10,350 USD
View
B
Retailer 19
-
$14,654 CAD
€9,991 EUR
View
Retailer 20
-
$15,577 CAD
$11,151 USD
View
Price last confirmed 9 days ago
C
Retailer 21
-
$17,383 CAD
ZAR 201,028 ZAR
View
Most Expensive
C
MOH London
D404E7B54 · Oct 29
$18,578 CAD
£10,472 GBP
View
21 more retailers have this diamond
Prices start from $10,484 CADSave up to $8,094 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.

B
1.50ct Cushion
$10,484 CAD