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 $576 USD
HK$4,500 HKD
As of October 30, 2026
Save $2,194 USD (79%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $2,770 USD 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 $576 to $2,770, a $2,194 spread on the same certified stone. Brilliant Earth lists it at $2,770. 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
Color
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: $2,770 USD|Low: $480 USD|High: $5,220 USD|Avg: $1,483 USD|-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 30, 2026
Retailer 5$480 USD
Retailer 7$576 USD
Retailer 10$654 USD
Retailer 9$805 USD
Retailer 2$809 USD
Retailer 14$839 USD
Retailer 4$852 USD
Retailer 11$873 USD
Retailer 13$1,289 USD
Retailer 12$1,351 USD
Retailer 8$1,675 USD
Retailer 3$1,960 USD
Retailer 6$2,680 USD
Brilliant Earth$2,770 USD

35 data points across 14 retailers

13 retailers$576 USD to $2,770 USD

A
Cheapest Retailer
-
$576 USD
HK$4,500 HKD
A
Retailer 2
-
$654 USD
£515 GBP
View
B+
Retailer 3
-
$805 USD
View
A
Retailer 4
-
$809 USD
€770 EUR
View
B
Retailer 5
-
$839 USD
View
A
Retailer 6
-
$852 USD
View
A
Retailer 7
-
$873 USD
£688 GBP
View
B+
Retailer 8
-
$1,289 USD
View
B+
Retailer 9
-
$1,351 USD
View
B+
Retailer 10
-
$1,675 USD
SGD 2,263 SGD
View
B+
Retailer 11
-
$1,960 USD
£1,543 GBP
View
B
Retailer 12
-
$2,680 USD
View
Most Expensive
B
Brilliant Earth
20143830A · Oct 30
$2,770 USD
View
12 more retailers have this diamond
Prices start from $576 USDSave up to $2,194 USD

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
$576 USD