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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 $4,862 NZD
As of November 4, 2026
Save $5,675 NZD (54%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $10,536 NZD at MOH London · As of November 7, 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 $4,862 to $10,536, a $5,675 spread on the same certified stone. MOH London lists it at $10,536. 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: $10,536 NZD|Low: $4,954 NZD|High: $10,719 NZD|Avg: $6,533 NZD|-0.5%
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$4,954 NZD
Retailer 6$4,988 NZD
Retailer 7$5,139 NZD
Retailer 8$5,388 NZD
Retailer 5$5,738 NZD
Retailer 9$6,171 NZD
Retailer 2$6,554 NZD
Retailer 3$6,954 NZD
Retailer 4$7,730 NZD
MOH London$10,536 NZD

45 data points across 10 retailers

15 retailers$4,862 NZD to $10,536 NZD

B+
Cheapest Retailer
-
$4,862 NZD
B+
Retailer 2
-
$4,954 NZD
View
B+
Retailer 3
-
$4,988 NZD
View
B+
Retailer 4
-
$5,074 NZD
View
B+
Retailer 5
-
$5,139 NZD
View
B
Retailer 6
-
$5,388 NZD
View
B
Retailer 7
-
$5,565 NZD
View
Retailer 8
-
$5,738 NZD
View
Price last confirmed 9 days ago
B
Retailer 9
-
$6,171 NZD
View
B
Retailer 10
-
$6,234 NZD
View
B
Retailer 11
-
$6,554 NZD
View
B
Retailer 12
-
$6,954 NZD
View
Retailer 13
-
$7,176 NZD
View
Price last confirmed 15 days ago
B
Retailer 14
-
$7,730 NZD
View
Most Expensive
C
MOH London
2DE41333E · Nov 7
$10,536 NZD
£4,599 GBP
View
14 more retailers have this diamond
Prices start from $4,862 NZDSave up to $5,675 NZD

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
$4,862 NZD