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Cushion|Lab Grown|IGI

1.83ct E SI1 Cushion Lab Grown Diamond

ID • E/SI1 • IGI LG478107094

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG478107094

Diamond specifications and retailer prices

From $774 AUD
$544 USD
As of October 29, 2026
Save $2,854 AUD (79%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $5,608 AUD at Do Amore Diamonds · As of October 29, 2026
View at Do Amore Diamonds

About this 1.83ct lab-grown cushion diamond

This 1.83ct lab-grown cushion sits in the one-and-a-half to two carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG478107094 or 478107094. Listed at 12 retailers as of October 29, 2026, with a 369% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

1.83
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.8°
Pavilion angle39.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG478107094
Dimensions7.22 × 6.91 × 4.72 mm
L/W Ratio1.04
Girdle conditionFaceted
Culet sizePointed
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
7.22 mm6.91 mm1.83 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG478107094
Side View
Table 61.5%Crown 36.8°Girdle: MED-THKPavilion 39.5°Culet: NoneDepth 68.3%

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 29
Current: $5,608 AUD|Low: $783 AUD|High: $5,608 AUD|Avg: $2,052 AUD
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 30, 2026
Retailer 7$783 AUD
Retailer 2$1,110 AUD
Retailer 10$1,140 AUD
Retailer 9$1,230 AUD
Retailer 3$1,437 AUD
Retailer 6$1,751 AUD
Retailer 8$2,235 AUD
Retailer 5$3,260 AUD
Retailer 4$3,628 AUD
Do Amore Diamonds$5,608 AUD

44 data points across 10 retailers

12 retailers$774 AUD to $3,628 AUD

A
Cheapest Retailer
-
$774 AUD
$544 USD
A
Retailer 2
-
$783 AUD
$550 USD
View
B+
Retailer 3
-
$989 AUD
$695 USD
View
B+
Retailer 4
-
$1,110 AUD
£614 GBP
View
B+
Retailer 5
-
$1,140 AUD
$801 USD
View
B+
Retailer 6
-
$1,230 AUD
$864 USD
View
B+
Retailer 7
-
$1,437 AUD
£795 GBP
View
B
Retailer 8
-
$1,751 AUD
$1,230 USD
View
B
Retailer 9
-
$2,235 AUD
$1,570 USD
View
B
Retailer 10
-
$3,260 AUD
CA$3,181 CAD
View
B
Retailer 11
-
$3,628 AUD
£2,007 GBP
View
Most Expensive
Do Amore Diamonds
27-BF41D4A58 · Oct 29
$5,608 AUD
$3,940 USD
View
Price under review
11 more retailers have this diamond
Prices start from $774 AUDSave up to $2,854 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
1.83ct Cushion
$774 AUD