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Cushion|Natural|IGI

1.21ct H SI1 Cushion Natural Diamond

VG • H/SI1 • IGI 803629203

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI 803629203

Diamond specifications and retailer prices

From $2,157 AUD
As of November 6, 2026
Save $2,009 AUD (48%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $4,166 AUD at MOH London · As of November 4, 2026
View at MOH London

About this 1.21ct natural cushion diamond

This 1.21ct natural cushion sits in the classic one-carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI 803629203. Listed at 12 retailers as of November 4, 2026, with prices from $2,157 to $4,166, a $2,009 spread on the same certified stone. MOH London lists it at $4,166. 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

1.21
Carat
H
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.2°
Pavilion angle36.8°
OriginNatural
Grading LabIGI
CertificateIGI 803629203
Dimensions7.24 × 5.56 × 3.78 mm
L/W Ratio1.30
Girdle conditionFaceted
Top View
7.24 mm5.56 mm1.21 ctH / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 803629203
Side View
Table 63.0%Crown 34.2°Girdle: THN-THKPavilion 36.8°Culet: NoneDepth 68.0%

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: $4,166 AUD|Low: $2,078 AUD|High: $4,357 AUD|Avg: $2,820 AUD|-3.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 7, 2026
Retailer 4$2,157 AUD
Retailer 5$2,167 AUD
Retailer 9$2,212 AUD
Retailer 10$2,435 AUD
Retailer 3$2,457 AUD
Retailer 11$2,495 AUD
Retailer 7$2,535 AUD
Retailer 2$2,637 AUD
Retailer 8$2,909 AUD
Retailer 6$2,965 AUD
MOH London$4,166 AUD

44 data points across 11 retailers

12 retailers$2,157 AUD to $4,166 AUD

A
Cheapest Retailer
-
$2,157 AUD
Final sale: no returns
A
Retailer 2
-
$2,167 AUD
View
A
Retailer 3
-
$2,212 AUD
View
A
Retailer 4
-
$2,435 AUD
View
Retailer 5
-
$2,457 AUD
View
Price last confirmed 22 days ago
B+
Retailer 6
-
$2,495 AUD
View
B+
Retailer 7
-
$2,495 AUD
View
A
Retailer 8
-
$2,535 AUD
View
A
Retailer 9
-
$2,637 AUD
View
A
Retailer 10
-
$2,909 AUD
View
A
Retailer 11
-
$2,965 AUD
View
Most Expensive
B
MOH London
0CDBA82A1 · Nov 4
$4,166 AUD
£2,254 GBP
View
11 more retailers have this diamond
Prices start from $2,157 AUDSave up to $2,009 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.

A
1.21ct Cushion
$2,157 AUD