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Cushion|Lab Grown|IGI

1.63ct E SI1 Cushion Lab Grown Diamond

ID • E/SI1 • IGI LG488122840

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG488122840

Diamond specifications and retailer prices

From $307 AUD
$216 USD
As of October 30, 2026
Save $2,326 AUD (88%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $2,634 AUD at Do Amore Diamonds · As of October 29, 2026
View at Do Amore Diamonds

About this 1.63ct lab-grown cushion diamond

This 1.63ct 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 LG488122840 or 488122840. Listed at 13 retailers as of October 29, 2026, with prices from $307 to $2,634, a $2,326 spread on the same certified stone. Do Amore Diamonds lists it at $2,634. 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

1.63
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.9°
Pavilion angle39.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG488122840
Dimensions7.46 × 6.67 × 4.34 mm
L/W Ratio1.12
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
7.46 mm6.67 mm1.63 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG488122840
Side View
Table 62.5%Crown 32.9°Girdle: MediumPavilion 39.1°Culet: NoneDepth 65.1%

Caratlytics Score

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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 30
Current: $695 AUD|Low: $307 AUD|High: $2,306 AUD|Avg: $997 AUD|+4.4%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 30, 2026
Retailer 9$307 AUD
Retailer 6$340 AUD
Retailer 2$611 AUD
Retailer 1$695 AUD
Retailer 8$821 AUD
Retailer 4$1,231 AUD
Retailer 7$1,382 AUD
Retailer 3$1,510 AUD
Retailer 5$1,879 AUD

44 data points across 9 retailers

13 retailers$307 AUD to $2,634 AUD

A
Cheapest Retailer
-
$307 AUD
$216 USD
Final sale: no returns
A
Retailer 2
-
$340 AUD
$239 USD
View
B+
Retailer 3
-
$457 AUD
$321 USD
View
A
Retailer 4
-
$591 AUD
$415 USD
View
A
Retailer 5
-
$611 AUD
€409 EUR
View
A
Retailer 6
-
$695 AUD
£384 GBP
View
A
Retailer 7
-
$821 AUD
$577 USD
View
Retailer 8
-
$1,231 AUD
$865 USD
View
Price last confirmed 9 days ago
B+
Retailer 9
-
$1,253 AUD
$880 USD
View
B+
Retailer 10
-
$1,382 AUD
$971 USD
View
B+
Retailer 11
-
$1,510 AUD
£835 GBP
View
B
Retailer 12
-
$1,879 AUD
$1,320 USD
View
Most Expensive
B
Do Amore Diamonds
27-50C0F166E · Oct 29
$2,634 AUD
$1,850 USD
View
12 more retailers have this diamond
Prices start from $307 AUDSave up to $2,326 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
1.63ct Cushion
$307 AUD