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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 $3,454 SGD
As of November 4, 2026
Save $4,051 SGD (54%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $7,505 SGD 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 $3,454 to $7,505, a $4,051 spread on the same certified stone. MOH London lists it at $7,505. 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
Colour
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: $7,505 SGD|Low: $3,519 SGD|High: $7,616 SGD|Avg: $4,641 SGD|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 7, 2026
Retailer 10$3,519 SGD
Retailer 6$3,544 SGD
Retailer 7$3,651 SGD
Retailer 8$3,828 SGD
Retailer 5$4,077 SGD
Retailer 9$4,384 SGD
Retailer 2$4,656 SGD
Retailer 3$4,941 SGD
Retailer 4$5,492 SGD
MOH London$7,505 SGD

45 data points across 10 retailers

15 retailers$3,454 SGD to $7,505 SGD

B+
Cheapest Retailer
-
$3,454 SGD
B+
Retailer 2
-
$3,519 SGD
View
B+
Retailer 3
-
$3,544 SGD
View
B+
Retailer 4
-
$3,605 SGD
View
B+
Retailer 5
-
$3,651 SGD
View
B
Retailer 6
-
$3,828 SGD
View
B
Retailer 7
-
$3,954 SGD
View
Retailer 8
-
$4,077 SGD
View
Price last confirmed 9 days ago
B
Retailer 9
-
$4,384 SGD
View
B
Retailer 10
-
$4,429 SGD
View
B
Retailer 11
-
$4,656 SGD
View
B
Retailer 12
-
$4,941 SGD
View
Retailer 13
-
$5,098 SGD
View
Price last confirmed 15 days ago
B
Retailer 14
-
$5,492 SGD
View
Most Expensive
C
MOH London
2DE41333E · Nov 4
$7,505 SGD
£4,611 GBP
View
14 more retailers have this diamond
Prices start from $3,454 SGDSave up to $4,051 SGD

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
$3,454 SGD