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Cushion|Lab Grown|IGI

3.50ct E SI1 Cushion Lab Grown Diamond

VG • E/SI1 • IGI LG807652606

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG807652606

Diamond specifications and retailer prices

From €516 EUR
HK$4,500 HKD
As of October 30, 2026
Save €1,964 EUR (79%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: €2,479 EUR at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 3.5ct lab-grown cushion diamond

This 3.5ct lab-grown cushion sits in the three to five carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG807652606 or 807652606. Listed at 13 retailers as of October 30, 2026, with prices from €516 to €2,479, a €1,964 spread on the same certified stone. Brilliant Earth lists it at €2,479. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

3.50
Carat
E
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.4°
Pavilion angle29.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG807652606
Dimensions10.68 × 7.54 × 4.74 mm
L/W Ratio1.42
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
10.68 mm7.54 mm3.50 ctE / SI1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG807652606
Side View
Table 67.0%Crown 36.4°Girdle: MED-THKPavilion 29.4°Culet: NoneDepth 62.9%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: €2,479 EUR|Low: €430 EUR|High: €4,672 EUR|Avg: €1,318 EUR|-46.9%
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€430 EUR
Retailer 9€516 EUR
Retailer 11€586 EUR
Retailer 10€721 EUR
Retailer 8€724 EUR
Retailer 14€751 EUR
Retailer 4€763 EUR
Retailer 12€782 EUR
Retailer 7€1,139 EUR
Retailer 13€1,209 EUR
Retailer 2€1,478 EUR
Retailer 3€1,754 EUR
Retailer 6€2,399 EUR
Brilliant Earth€2,479 EUR

35 data points across 14 retailers

13 retailers€516 EUR to €2,479 EUR

A
Cheapest Retailer
-
€516 EUR
HK$4,500 HKD
A
Retailer 2
-
€586 EUR
£515 GBP
View
B+
Retailer 3
-
€721 EUR
$805 USD
View
A
Retailer 4
-
€724 EUR
View
B
Retailer 5
-
€751 EUR
$839 USD
View
A
Retailer 6
-
€763 EUR
$852 USD
View
A
Retailer 7
-
€782 EUR
£688 GBP
View
B+
Retailer 8
-
€1,139 EUR
$1,273 USD
View
B+
Retailer 9
-
€1,209 EUR
$1,351 USD
View
B+
Retailer 10
-
€1,478 EUR
SGD 2,232 SGD
View
B+
Retailer 11
-
€1,754 EUR
£1,543 GBP
View
B
Retailer 12
-
€2,399 EUR
$2,680 USD
View
Most Expensive
B
Brilliant Earth
20143830A · Oct 30
€2,479 EUR
$2,770 USD
View
12 more retailers have this diamond
Prices start from €516 EURSave up to €1,964 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
3.50ct Cushion
€516 EUR