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Round|Lab Grown|IGI

3.50ct E SI1 Round Lab Grown Diamond

ID • E/SI1 • IGI LG655449566

Shape and cutting style on the report: Round brilliant

Certificate IGI LG655449566

Diamond specifications and retailer prices

From $383 USD
As of October 29, 2026
Save $1,483 USD (79%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $1,890 USD at Michael Trio · As of October 13, 2026
View at Michael Trio

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 LG655449566 or 655449566. Listed at 9 retailers as of October 29, 2026, with a 387% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.8°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG655449566
Dimensions9.74 × 9.70 × 6.03 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
HEARTS & ARROWS This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
9.74 mm9.70 mm3.50 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG655449566
Side View
Table 56.0%Crown 35.8°Girdle: MediumPavilion 40.8°Culet: NoneDepth 62.0%

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: $1,890 USD|Low: $422 USD|High: $2,235 USD|Avg: $1,213 USD|-0.6%
Michael Trio
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 29, 2026
Retailer 8$429 USD
Retailer 6$638 USD
Retailer 2$761 USD
Retailer 10$800 USD
Retailer 4$1,103 USD
Retailer 3$1,155 USD
Retailer 11$1,228 USD
Retailer 9$1,332 USD
Retailer 7$1,335 USD
Retailer 5$1,866 USD
Michael Trio$1,890 USD
Retailer 12$2,235 USD

36 data points across 12 retailers

9 retailers$383 USD to $1,866 USD

A
Cheapest Retailer
-
$383 USD
A
Retailer 2
-
$429 USD
View
A
Retailer 3
-
$638 USD
£502 GBP
View
A
Retailer 4
-
$761 USD
€725 EUR
View
B+
Retailer 5
-
$1,332 USD
View
B+
Retailer 6
-
$1,335 USD
View
B+
Retailer 7
-
$1,527 USD
View
B+
Retailer 8
-
$1,866 USD
£1,469 GBP
View
Most Expensive
B
Michael Trio
1371818661 · Oct 13
$1,890 USD
SGD 2,554 SGD
View
Price last confirmed 16 days ago
8 more retailers have this diamond
Prices start from $383 USDSave up to $1,483 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 Round
$383 USD