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Cushion|Lab Grown|IGI

1.01ct E SI1 Cushion Lab Grown Diamond

EX • E/SI1 • IGI LG805634045

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

Certificate IGI LG805634045

Diamond specifications and retailer prices

From $283 AUD
$199 USD
As of October 25, 2026
Save $1,236 AUD (81%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $1,519 AUD at Reve Diamonds · As of October 28, 2026
View at Reve Diamonds

About this 1.01ct lab-grown cushion diamond

This 1.01ct lab-grown cushion sits in the classic one-carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG805634045 or 805634045. Listed at 15 retailers as of October 25, 2026, with prices from $283 to $1,519, a $1,236 spread on the same certified stone. Reve Diamonds lists it at $1,519. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.01
Carat
E
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.4°
Pavilion angle39.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG805634045
Dimensions5.81 × 5.79 × 3.92 mm
L/W Ratio1.00
Girdle conditionFaceted
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
5.81 mm5.79 mm1.01 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG805634045
Side View
Table 60.0%Crown 37.4°Girdle: STK-THKPavilion 39.9°Culet: NoneDepth 67.7%

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: Oct 25
Current: $498 AUD|Low: $249 AUD|High: $1,519 AUD|Avg: $643 AUD|+5.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Reve Diamonds
October 29, 2026
Retailer 12$283 AUD
Retailer 9$285 AUD
Retailer 7$369 AUD
Retailer 3$421 AUD
Retailer 6$487 AUD
Retailer 1$498 AUD
Retailer 13$511 AUD
Retailer 8$538 AUD
Retailer 2$734 AUD
Retailer 11$750 AUD
Retailer 5$811 AUD
Retailer 4$989 AUD
Retailer 10$1,327 AUD
Reve Diamonds$1,519 AUD

35 data points across 14 retailers

15 retailers$283 AUD to $1,519 AUD

A
Cheapest Retailer
-
$283 AUD
$199 USD
A
Retailer 2
-
$285 AUD
$200 USD
View
Final sale: no returns
A
Retailer 3
-
$369 AUD
£204 GBP
View
A
Retailer 4
-
$421 AUD
$296 USD
View
A
Retailer 5
-
$487 AUD
€326 EUR
View
A
Retailer 6
-
$498 AUD
£275 GBP
View
A
Retailer 7
-
$511 AUD
$359 USD
View
A
Retailer 8
-
$538 AUD
£298 GBP
View
B+
Retailer 9
-
$734 AUD
$516 USD
View
Retailer 10
-
$745 AUD
$524 USD
View
Price last confirmed 108 days ago
B
Retailer 11
-
$750 AUD
$527 USD
View
B
Retailer 12
-
$811 AUD
$570 USD
View
B
Retailer 13
-
$989 AUD
$695 USD
View
B
Retailer 14
-
$1,327 AUD
£734 GBP
View
Most Expensive
B
Reve Diamonds
C4CC612A1 · Oct 28
$1,519 AUD
$1,067 USD
View
14 more retailers have this diamond
Prices start from $283 AUDSave up to $1,236 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
1.01ct Cushion
$283 AUD