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Cushion|Lab Grown|IGI

1.02ct E SI1 Cushion Lab Grown Diamond

VG • E/SI1 • IGI LG400942192

Shape and cutting style on the report: Square cushion modified brilliant

Certificate IGI LG400942192

Diamond specifications and retailer prices

From $1,100 AUD
$773 USD
As of October 28, 2026
Save $753 AUD (41%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $1,853 AUD at Loose Grown Diamond · As of October 28, 2026
View at Loose Grown Diamond

About this 1.02ct lab-grown cushion diamond

This 1.02ct lab-grown cushion sits in the classic one-carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG400942192 or 400942192. Listed at 8 retailers as of October 28, 2026, with prices from $1,100 to $1,853, a $753 spread on the same certified stone. Loose Grown Diamond lists it at $1,853. 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

1.02
Carat
E
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle33.2°
Pavilion angle33.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG400942192
Dimensions5.79 × 5.73 × 3.57 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory grown diamond was created by high pressure high temperature process (HPHT) Type II
Top View
5.79 mm5.73 mm1.02 ctE / SI1
OriginLab Grown
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI LG400942192
Side View
Table 64.5%Crown 33.2°Girdle: STK-VTKPavilion 33.8°Culet: NoneDepth 62.3%

Caratlytics Score

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B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 28
Current: $1,853 AUD|Low: $1,100 AUD|High: $4,528 AUD|Avg: $1,844 AUD
Loose Grown Diamond
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 29, 2026
Retailer 8$1,100 AUD
Retailer 7$1,139 AUD
Retailer 6$1,295 AUD
Retailer 5$1,388 AUD
Retailer 4$1,588 AUD
Retailer 2$1,819 AUD
Loose Grown Diamond$1,853 AUD
Retailer 3$4,498 AUD

43 data points across 8 retailers

8 retailers$1,100 AUD to $1,853 AUD

B
Cheapest Retailer
-
$1,100 AUD
$773 USD
Final sale: no returns
B
Retailer 2
-
$1,139 AUD
$800 USD
View
Price last confirmed 13 days ago
B
Retailer 3
-
$1,295 AUD
$910 USD
View
B
Retailer 4
-
$1,388 AUD
$975 USD
View
B
Retailer 5
-
$1,588 AUD
£879 GBP
View
B
Retailer 6
-
$1,819 AUD
£1,006 GBP
View
Most Expensive
C
Loose Grown Diamond
400942192 · Oct 28
$1,853 AUD
$1,302 USD
View
6 more retailers have this diamond
Prices start from $1,100 AUDSave up to $753 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
1.02ct Cushion
$1,100 AUD