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Cushion|Natural|IGI

1.00ct K SI1 Cushion Natural Diamond

GD • K/SI1 • IGI 270773253

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI 270773253

Diamond specifications and retailer prices

From $1,853 NZD
As of November 5, 2026
Save $2,049 NZD (53%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $3,901 NZD at MOH London · As of November 4, 2026
View at MOH London

About this 1ct natural cushion diamond

This 1ct natural cushion sits in the classic one-carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a standard cut grade and certified by IGI 270773253. Listed at 10 retailers as of November 4, 2026, with prices from $1,853 to $3,901, a $2,049 spread on the same certified stone. MOH London lists it at $3,901. 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

1.00
Carat
K
Colour
SI1
Clarity
Good
Cut

Specifications

CutGood
PolishGood
SymmetryGood
FluorescenceNone
OriginNatural
Grading LabIGI
CertificateIGI 270773253
Dimensions5.91 × 5.78 × 4.01 mm
L/W Ratio1.02
Girdle conditionFaceted
Culet sizePointed
Top View
5.91 mm5.78 mm1.00 ctK / SI1
OriginNatural
CutGood
PolishGood
SymmetryGood
FluorescenceNone
CertificateIGI 270773253
Side View
Table 64.5%CrownGirdle: MED-ETKPavilionCulet: NoneDepth 69.4%

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 5
Current: $3,901 NZD|Low: $1,853 NZD|High: $3,959 NZD|Avg: $2,440 NZD|-0.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 8$1,853 NZD
Retailer 10$1,858 NZD
Retailer 5$1,867 NZD
Retailer 6$1,934 NZD
Retailer 7$2,147 NZD
Retailer 3$2,437 NZD
Retailer 4$2,605 NZD
Retailer 2$2,691 NZD
Retailer 9$2,951 NZD
MOH London$3,901 NZD

43 data points across 10 retailers

10 retailers$1,853 NZD to $3,901 NZD

B+
Cheapest Retailer
-
$1,853 NZD
B+
Retailer 2
-
$1,858 NZD
View
B+
Retailer 3
-
$1,867 NZD
View
Retailer 4
-
$1,934 NZD
View
Price last confirmed 8 days ago
B+
Retailer 5
-
$2,147 NZD
View
B+
Retailer 6
-
$2,437 NZD
View
B+
Retailer 7
-
$2,605 NZD
View
B
Retailer 8
-
$2,691 NZD
View
B
Retailer 9
-
$2,951 NZD
View
Most Expensive
B
MOH London
FADB9622D · Nov 4
$3,901 NZD
£1,703 GBP
View
9 more retailers have this diamond
Prices start from $1,853 NZDSave up to $2,049 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+
1.00ct Cushion
$1,853 NZD