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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 $383 NZD
$216 USD
As of October 30, 2026
Save $2,899 NZD (88%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $3,282 NZD 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 $383 to $3,282, a $2,899 spread on the same certified stone. Do Amore Diamonds lists it at $3,282. 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: $866 NZD|Low: $383 NZD|High: $2,874 NZD|Avg: $1,243 NZD|+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$383 NZD
Retailer 6$424 NZD
Retailer 2$762 NZD
Retailer 1$866 NZD
Retailer 8$1,024 NZD
Retailer 4$1,535 NZD
Retailer 7$1,722 NZD
Retailer 3$1,882 NZD
Retailer 5$2,342 NZD

44 data points across 9 retailers

13 retailers$383 NZD to $3,282 NZD

A
Cheapest Retailer
-
$383 NZD
$216 USD
Final sale: no returns
A
Retailer 2
-
$424 NZD
$239 USD
View
B+
Retailer 3
-
$570 NZD
$321 USD
View
A
Retailer 4
-
$736 NZD
$415 USD
View
A
Retailer 5
-
$762 NZD
€409 EUR
View
A
Retailer 6
-
$866 NZD
£384 GBP
View
A
Retailer 7
-
$1,024 NZD
$577 USD
View
Retailer 8
-
$1,535 NZD
$865 USD
View
Price last confirmed 9 days ago
B+
Retailer 9
-
$1,561 NZD
$880 USD
View
B+
Retailer 10
-
$1,722 NZD
$971 USD
View
B+
Retailer 11
-
$1,882 NZD
£835 GBP
View
B
Retailer 12
-
$2,342 NZD
$1,320 USD
View
Most Expensive
B
Do Amore Diamonds
27-50C0F166E · Oct 29
$3,282 NZD
$1,850 USD
View
12 more retailers have this diamond
Prices start from $383 NZDSave up to $2,899 NZD

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
$383 NZD