Cushion|Natural|GIA

1.28ct K SI1 Cushion Natural Diamond

VG • K/SI1 • GIA 7358737542

Certificate GIA 7358737542

Diamond specifications and retailer prices

From $2,695 USD
As of November 4, 2026
Save $3,161 USD (54%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $5,856 USD 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 $2,695 to $5,856, a $3,161 spread on the same certified stone. MOH London lists it at $5,856. 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: $5,856 USD|Low: $2,695 USD|High: $5,942 USD|Avg: $3,527 USD|-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$2,695 USD
Retailer 11$2,746 USD
Retailer 7$2,765 USD
Retailer 8$2,849 USD
Retailer 9$2,987 USD
Retailer 6$3,181 USD
Retailer 10$3,421 USD
Retailer 4$3,611 USD
Retailer 2$3,855 USD
Retailer 5$4,285 USD
MOH London$5,856 USD

44 data points across 11 retailers

15 retailers$2,695 USD to $5,856 USD

B+
Cheapest Retailer
-
$2,695 USD
B+
Retailer 2
-
$2,746 USD
View
B+
Retailer 3
-
$2,765 USD
View
B+
Retailer 4
-
$2,813 USD
View
B+
Retailer 5
-
$2,849 USD
View
B
Retailer 6
-
$2,987 USD
View
B
Retailer 7
-
$3,085 USD
View
Retailer 8
-
$3,181 USD
View
Price last confirmed 9 days ago
B
Retailer 9
-
$3,421 USD
View
B
Retailer 10
-
$3,456 USD
View
B
Retailer 11
-
$3,611 USD
View
B
Retailer 12
-
$3,855 USD
View
Retailer 13
-
$3,978 USD
View
Price last confirmed 15 days ago
B
Retailer 14
-
$4,285 USD
View
Most Expensive
C
MOH London
2DE41333E · Nov 4
$5,856 USD
£4,611 GBP
View
14 more retailers have this diamond
Prices start from $2,695 USDSave up to $3,161 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.

B+
1.28ct Cushion
$2,695 USD