Cushion|Natural|GIA

1.51ct I SI1 Cushion Natural Diamond

VG • I/SI1 • GIA 1235579975

Certificate GIA 1235579975

Diamond specifications and retailer prices

From $9,275 CAD
$6,640 USD
As of October 30, 2026
Save $8,238 CAD (47%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $17,514 CAD at MOH London · As of October 29, 2026
View at MOH London

About this 1.51ct natural cushion diamond

This 1.51ct 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 very-good cut grade stated by the retailer rather than the lab and certified by GIA 1235579975. Listed at 21 retailers as of October 29, 2026, with prices from $9,275 to $17,514, a $8,238 spread on the same certified stone. MOH London lists it at $17,514. 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

1.51
Carat
I
Color
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1235579975
Dimensions6.68 × 6.64 × 4.43 mm
L/W Ratio1.01
Top View
6.68 mm6.64 mm1.51 ctI / SI1
OriginNatural
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 1235579975
Side View
Table 70.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 66.7%

Caratlytics Score

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

Price History

Last verified: Oct 30
Current: $17,514 CAD|Low: $8,711 CAD|High: $17,629 CAD|Avg: $12,199 CAD|+0.4%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 31, 2026
Retailer 9$9,275 CAD
Retailer 7$9,331 CAD
Retailer 4$10,453 CAD
Retailer 8$10,453 CAD
Retailer 3$11,654 CAD
Retailer 5$11,853 CAD
Retailer 2$12,907 CAD
Retailer 6$15,084 CAD
MOH London$17,514 CAD

44 data points across 9 retailers

21 retailers$9,275 CAD to $17,514 CAD

B
Cheapest Retailer
-
$9,275 CAD
$6,640 USD
Retailer 2
-
$9,331 CAD
$6,680 USD
View
Price last confirmed 12 days ago
B
Retailer 3
-
$9,708 CAD
$6,950 USD
View
B
Retailer 4
-
$9,787 CAD
$7,006 USD
View
B
Retailer 5
-
$10,046 CAD
$7,192 USD
View
B
Retailer 6
-
$10,335 CAD
View
B
Retailer 7
-
$10,428 CAD
$7,465 USD
View
B
Retailer 8
-
$10,453 CAD
$7,483 USD
View
Final sale: no returns
B
Retailer 9
-
$10,453 CAD
$7,483 USD
View
B
Retailer 10
-
$10,636 CAD
$7,614 USD
View
B
Retailer 11
-
$11,654 CAD
£6,569 GBP
View
B
Retailer 12
-
$11,685 CAD
$8,365 USD
View
Retailer 13
-
$11,853 CAD
A$13,054 AUD
View
Price last confirmed 7 days ago
B
Retailer 14
-
$11,990 CAD
$8,583 USD
View
B
Retailer 15
-
$12,446 CAD
$8,910 USD
View
B
Retailer 16
-
$12,446 CAD
$8,910 USD
View
B
Retailer 17
-
$12,865 CAD
$9,210 USD
View
B
Retailer 18
-
$12,907 CAD
€8,800 EUR
View
Retailer 19
-
$13,764 CAD
$9,853 USD
View
Price last confirmed 8 days ago
Retailer 20
-
$15,084 CAD
ZAR 174,448 ZAR
View
Price last confirmed 9 days ago
Most Expensive
B
MOH London
B8380E7D5 · Oct 29
$17,514 CAD
£9,872 GBP
View
20 more retailers have this diamond
Prices start from $9,275 CADSave up to $8,238 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
1.51ct Cushion
$9,275 CAD