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Cushion|Natural|GIA

1.28ct K SI1 Cushion Natural Diamond

VG • K/SI1 • GIA 7358737542

Certificate GIA 7358737542

Diamond specifications and retailer prices

From $3,791 CAD
As of November 4, 2026
Save $4,446 CAD (54%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $8,237 CAD at MOH London · As of November 4, 2026
View at MOH London

About this 1.28ct natural cushion diamond

This 1.28ct natural cushion sits in the one-and-a-quarter to one-and-a-half 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 7358737542. Listed at 15 retailers as of November 4, 2026, with prices from $3,791 to $8,237, a $4,446 spread on the same certified stone. MOH London lists it at $8,237. 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

1.28
Carat
K
Color
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryVery Good
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 7358737542
Dimensions6.42 × 5.66 × 3.77 mm
L/W Ratio1.13
Top View
6.42 mm5.66 mm1.28 ctK / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceMedium
CertificateGIA 7358737542
Side View
Table 69.0%CrownGirdle: VTK-ETKPavilionCulet: NoneDepth 66.5%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: $8,237 CAD|Low: $3,791 CAD|High: $8,358 CAD|Avg: $4,961 CAD|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 3$3,791 CAD
Retailer 11$3,863 CAD
Retailer 7$3,889 CAD
Retailer 8$4,007 CAD
Retailer 9$4,202 CAD
Retailer 6$4,474 CAD
Retailer 10$4,812 CAD
Retailer 4$5,079 CAD
Retailer 2$5,422 CAD
Retailer 5$6,027 CAD
MOH London$8,237 CAD

44 data points across 11 retailers

15 retailers$3,791 CAD to $8,237 CAD

B+
Cheapest Retailer
-
$3,791 CAD
B+
Retailer 2
-
$3,863 CAD
View
B+
Retailer 3
-
$3,889 CAD
View
B+
Retailer 4
-
$3,957 CAD
View
B+
Retailer 5
-
$4,007 CAD
View
B
Retailer 6
-
$4,202 CAD
View
B
Retailer 7
-
$4,339 CAD
View
Retailer 8
-
$4,474 CAD
View
Price last confirmed 9 days ago
B
Retailer 9
-
$4,812 CAD
View
B
Retailer 10
-
$4,861 CAD
View
B
Retailer 11
-
$5,079 CAD
View
B
Retailer 12
-
$5,422 CAD
View
Retailer 13
-
$5,595 CAD
View
Price last confirmed 15 days ago
B
Retailer 14
-
$6,027 CAD
View
Most Expensive
C
MOH London
2DE41333E · Nov 4
$8,237 CAD
£4,611 GBP
View
14 more retailers have this diamond
Prices start from $3,791 CADSave up to $4,446 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+
1.28ct Cushion
$3,791 CAD