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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 $1,495 AUD
As of November 5, 2026
Save $1,653 AUD (53%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $3,148 AUD 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 $1,495 to $3,148, a $1,653 spread on the same certified stone. MOH London lists it at $3,148. 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: $3,148 AUD|Low: $1,495 AUD|High: $3,194 AUD|Avg: $1,969 AUD|-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$1,495 AUD
Retailer 10$1,499 AUD
Retailer 5$1,506 AUD
Retailer 6$1,560 AUD
Retailer 7$1,732 AUD
Retailer 3$1,966 AUD
Retailer 4$2,102 AUD
Retailer 2$2,171 AUD
Retailer 9$2,381 AUD
MOH London$3,148 AUD

43 data points across 10 retailers

10 retailers$1,495 AUD to $3,148 AUD

B+
Cheapest Retailer
-
$1,495 AUD
B+
Retailer 2
-
$1,499 AUD
View
B+
Retailer 3
-
$1,506 AUD
View
Retailer 4
-
$1,560 AUD
View
Price last confirmed 8 days ago
B+
Retailer 5
-
$1,732 AUD
View
B+
Retailer 6
-
$1,966 AUD
View
B+
Retailer 7
-
$2,102 AUD
View
B
Retailer 8
-
$2,171 AUD
View
B
Retailer 9
-
$2,381 AUD
View
Most Expensive
B
MOH London
FADB9622D · Nov 4
$3,148 AUD
£1,703 GBP
View
9 more retailers have this diamond
Prices start from $1,495 AUDSave up to $1,653 AUD

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
$1,495 AUD