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Cushion|Lab Grown|IGI

3.05ct E SI1 Cushion Lab Grown Diamond

ID • E/SI1 • IGI LG529243211

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG529243211

Diamond specifications and retailer prices

From €564 EUR
$630 USD
As of October 31, 2026
Save €3,527 EUR (86%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: €4,091 EUR at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 3.05ct lab-grown cushion diamond

This 3.05ct lab-grown cushion sits in the three to five carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG529243211 or 529243211. Listed at 8 retailers as of October 31, 2026, with prices from €564 to €4,091, a €3,527 spread on the same certified stone. Brilliant Earth lists it at €4,091. 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

3.05
Carat
E
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33°
Pavilion angle34.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG529243211
Dimensions8.60 × 7.86 × 5.22 mm
L/W Ratio1.09
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
8.60 mm7.86 mm3.05 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG529243211
Side View
Table 64.5%Crown 33°Girdle: THK-VTKPavilion 34.3°Culet: NoneDepth 66.4%

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 31
Current: €4,091 EUR|Low: €388 EUR|High: €4,216 EUR|Avg: €1,585 EUR|-3.0%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 1, 2026
Retailer 7€564 EUR
Retailer 4€721 EUR
Retailer 6€872 EUR
Retailer 5€962 EUR
Retailer 2€966 EUR
Retailer 3€2,725 EUR
Brilliant Earth€4,091 EUR

41 data points across 7 retailers

8 retailers€564 EUR to €4,091 EUR

A
Cheapest Retailer
-
€564 EUR
$630 USD
Final sale: no returns
A
Retailer 2
-
€721 EUR
$805 USD
View
A
Retailer 3
-
€872 EUR
$974 USD
View
B+
Retailer 4
-
€962 EUR
$1,075 USD
View
A
Retailer 5
-
€966 EUR
£850 GBP
View
B
Retailer 6
-
€2,016 EUR
HK$17,600 HKD
View
B
Retailer 7
-
€2,725 EUR
£2,397 GBP
View
Most Expensive
B
Brilliant Earth
17971335A · Oct 31
€4,091 EUR
$4,570 USD
View
7 more retailers have this diamond
Prices start from €564 EURSave up to €3,527 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
3.05ct Cushion
€564 EUR