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Cushion|Natural|IGI

1.00ct K SI1 Cushion Natural Diamond

VG • K/SI1 • IGI 808619901

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI 808619901

Diamond specifications and retailer prices

From $1,447 NZD
As of November 6, 2026
Save $1,282 NZD (47%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $2,729 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 very-good cut grade and certified by IGI 808619901. Listed at 10 retailers as of November 4, 2026, with prices from $1,447 to $2,729, a $1,282 spread on the same certified stone. MOH London lists it at $2,729. 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
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
Crown angle40.8°
Pavilion angle28.3°
OriginNatural
Grading LabIGI
CertificateIGI 808619901
Dimensions5.54 × 5.03 × 3.65 mm
L/W Ratio1.10
Girdle conditionFaceted
Top View
5.54 mm5.03 mm1.00 ctK / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateIGI 808619901
Side View
Table 63.0%Crown 40.8°Girdle: THK-VTKPavilion 28.3°Culet: NoneDepth 72.6%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $2,729 NZD|Low: $1,445 NZD|High: $2,765 NZD|Avg: $1,742 NZD|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 2$1,447 NZD
Retailer 6$1,492 NZD
Retailer 5$1,497 NZD
Retailer 10$1,512 NZD
Retailer 7$1,535 NZD
Retailer 8$1,703 NZD
Retailer 9$1,730 NZD
Retailer 4$1,820 NZD
Retailer 3$1,833 NZD
MOH London$2,729 NZD

43 data points across 10 retailers

10 retailers$1,447 NZD to $2,729 NZD

A
Cheapest Retailer
-
$1,447 NZD
Retailer 2
-
$1,492 NZD
View
Price last confirmed 8 days ago
B+
Retailer 3
-
$1,497 NZD
View
B+
Retailer 4
-
$1,512 NZD
View
B+
Retailer 5
-
$1,535 NZD
View
B+
Retailer 6
-
$1,703 NZD
View
B+
Retailer 7
-
$1,730 NZD
View
B+
Retailer 8
-
$1,820 NZD
View
B+
Retailer 9
-
$1,833 NZD
View
Most Expensive
B+
MOH London
103165640 · Nov 4
$2,729 NZD
£1,191 GBP
View
9 more retailers have this diamond
Prices start from $1,447 NZDSave up to $1,282 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.

A
1.00ct Cushion
$1,447 NZD