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Cushion|Lab Grown|IGI

1.63ct D SI1 Cushion Lab Grown Diamond

ID • D/SI1 • IGI LG494183935

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG494183935

Diamond specifications and retailer prices

From €201 EUR
$224 USD
As of October 30, 2026
Save €1,115 EUR (85%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: €1,316 EUR at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

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 D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG494183935 or 494183935. Listed at 13 retailers as of October 29, 2026, with prices from €201 to €1,316, a €1,115 spread on the same certified stone. Brilliant Earth lists it at €1,316. 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
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.1°
Pavilion angle34.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG494183935
Dimensions6.72 × 6.52 × 4.41 mm
L/W Ratio1.03
Girdle conditionFaceted
Culet sizePointed
Top View
6.72 mm6.52 mm1.63 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG494183935
Side View
Table 59.0%Crown 32.1°Girdle: THN-STKPavilion 34.9°Culet: NoneDepth 67.6%

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 30
Current: €1,316 EUR|Low: €118 EUR|High: €1,405 EUR|Avg: €610 EUR|-6.4%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
October 31, 2026
Retailer 5€118 EUR
Retailer 13€201 EUR
Retailer 11€222 EUR
Retailer 7€300 EUR
Retailer 2€364 EUR
Retailer 14€449 EUR
Retailer 3€500 EUR
Retailer 12€524 EUR
Retailer 10€568 EUR
Retailer 6€762 EUR
Retailer 9€935 EUR
Retailer 8€1,041 EUR
Retailer 4€1,069 EUR
Brilliant Earth€1,316 EUR

26 data points across 14 retailers

13 retailers€201 EUR to €1,316 EUR

A
Cheapest Retailer
-
€201 EUR
$224 USD
Final sale: no returns
A
Retailer 2
-
€222 EUR
$248 USD
View
B+
Retailer 3
-
€300 EUR
$335 USD
View
A
Retailer 4
-
€364 EUR
View
A
Retailer 5
-
€449 EUR
$502 USD
View
A
Retailer 6
-
€500 EUR
$559 USD
View
A
Retailer 7
-
€524 EUR
$585 USD
View
B+
Retailer 8
-
€568 EUR
$635 USD
View
B+
Retailer 9
-
€762 EUR
$852 USD
View
Retailer 10
-
€935 EUR
$1,045 USD
View
Price last confirmed 10 days ago
B
Retailer 11
-
€1,041 EUR
£916 GBP
View
B
Retailer 12
-
€1,069 EUR
$1,195 USD
View
Most Expensive
B
Brilliant Earth
9518221A · Oct 29
€1,316 EUR
$1,470 USD
View
12 more retailers have this diamond
Prices start from €201 EURSave up to €1,115 EUR

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
€201 EUR