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 $802 USD
As of November 6, 2026
Save $711 USD (47%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $1,513 USD 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 $802 to $1,513, a $711 spread on the same certified stone. MOH London lists it at $1,513. 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
Color
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
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $1,513 USD|Low: $801 USD|High: $1,533 USD|Avg: $966 USD|-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$802 USD
Retailer 6$827 USD
Retailer 5$830 USD
Retailer 10$838 USD
Retailer 7$851 USD
Retailer 8$944 USD
Retailer 9$959 USD
Retailer 4$1,009 USD
Retailer 3$1,016 USD
MOH London$1,513 USD

43 data points across 10 retailers

10 retailers$802 USD to $1,513 USD

A
Cheapest Retailer
-
$802 USD
Retailer 2
-
$827 USD
View
Price last confirmed 8 days ago
B+
Retailer 3
-
$830 USD
View
B+
Retailer 4
-
$838 USD
View
B+
Retailer 5
-
$851 USD
View
B+
Retailer 6
-
$944 USD
View
B+
Retailer 7
-
$959 USD
View
B+
Retailer 8
-
$1,009 USD
View
B+
Retailer 9
-
$1,016 USD
View
Most Expensive
B+
MOH London
103165640 · Nov 4
$1,513 USD
£1,191 GBP
View
9 more retailers have this diamond
Prices start from $802 USDSave up to $711 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.

A
1.00ct Cushion
$802 USD