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Round|Lab Grown|IGI

3.50ct E SI1 Round Lab Grown Diamond

EX • E/SI1 • IGI LG655421972

Shape and cutting style on the report: Round brilliant

Certificate IGI LG655421972

Diamond specifications and retailer prices

From €334 EUR
$373 USD
As of October 29, 2026
Save €1,376 EUR (80%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: €1,710 EUR at Rare Carat · As of October 28, 2026
View at Rare Carat

About this 3.5ct lab-grown round diamond

This 3.5ct lab-grown round 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 LG655421972 or 655421972. Listed at 14 retailers as of October 28, 2026, with prices from €334 to €1,710, a €1,376 spread on the same certified stone. Rare Carat lists it at €1,710. 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

3.50
Carat
E
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.7°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG655421972
Dimensions9.83 × 9.80 × 5.88 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
9.83 mm9.80 mm3.50 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG655421972
Side View
Table 61.0%Crown 33.7°Girdle: MediumPavilion 40.8°Culet: NoneDepth 60.0%

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 29
Current: €1,710 EUR|Low: €334 EUR|High: €4,292 EUR|Avg: €1,253 EUR|-27.5%
Rare Carat
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
Retailer 15
Retailer 16
October 30, 2026
Retailer 11€334 EUR
Retailer 6€388 EUR
Retailer 5€414 EUR
Retailer 15€458 EUR
Retailer 12€546 EUR
Retailer 9€555 EUR
Retailer 3€661 EUR
Retailer 13€662 EUR
Retailer 14€712 EUR
Retailer 10€746 EUR
Retailer 16€957 EUR
Retailer 2€1,215 EUR
Retailer 4€1,332 EUR
Rare Carat€1,710 EUR
Retailer 8€3,124 EUR
Retailer 7€4,292 EUR

4 data points across 16 retailers

14 retailers€334 EUR to €1,710 EUR

A
Cheapest Retailer
-
€334 EUR
$373 USD
A
Retailer 2
-
€388 EUR
$433 USD
View
A
Retailer 3
-
€414 EUR
$463 USD
View
A
Retailer 4
-
€458 EUR
HK$4,000 HKD
View
A
Retailer 5
-
€546 EUR
$610 USD
View
A
Retailer 6
-
€555 EUR
£488 GBP
View
B+
Retailer 7
-
€661 EUR
$739 USD
View
A
Retailer 8
-
€662 EUR
View
A
Retailer 9
-
€712 EUR
$795 USD
View
A
Retailer 10
-
€746 EUR
£657 GBP
View
B+
Retailer 11
-
€957 EUR
$1,069 USD
View
B+
Retailer 12
-
€1,215 EUR
$1,357 USD
View
B+
Retailer 13
-
€1,332 EUR
$1,488 USD
View
Most Expensive
B
Rare Carat
KI9724219KF655 · Oct 28
€1,710 EUR
$1,910 USD
View
13 more retailers have this diamond
Prices start from €334 EURSave up to €1,376 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 Round
€334 EUR