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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 $373 USD
As of October 29, 2026
Save $1,537 USD (80%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $1,910 USD 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 13 retailers as of October 28, 2026, with prices from $373 to $1,910, a $1,537 spread on the same certified stone. Rare Carat lists it at $1,910. 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
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: $1,910 USD|Low: $373 USD|High: $4,795 USD|Avg: $1,462 USD|-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
October 29, 2026
Retailer 2$373 USD
Retailer 5$433 USD
Retailer 4$463 USD
Retailer 12$512 USD
Retailer 8$610 USD
Retailer 10$622 USD
Retailer 14$739 USD
Retailer 9$739 USD
Retailer 11$795 USD
Retailer 15$829 USD
Retailer 13$1,069 USD
Retailer 3$1,488 USD
Rare Carat$1,910 USD
Retailer 7$3,490 USD
Retailer 6$4,795 USD

3 data points across 15 retailers

13 retailers$373 USD to $1,910 USD

A
Cheapest Retailer
-
$373 USD
A
Retailer 2
-
$433 USD
View
A
Retailer 3
-
$463 USD
View
A
Retailer 4
-
$512 USD
HK$4,000 HKD
View
A
Retailer 5
-
$610 USD
View
A
Retailer 6
-
$622 USD
£490 GBP
View
B+
Retailer 7
-
$739 USD
View
A
Retailer 8
-
$739 USD
€704 EUR
View
A
Retailer 9
-
$795 USD
View
A
Retailer 10
-
$829 USD
£653 GBP
View
B+
Retailer 11
-
$1,069 USD
View
B+
Retailer 12
-
$1,488 USD
View
Most Expensive
B
Rare Carat
KI9724219KF655 · Oct 28
$1,910 USD
View
12 more retailers have this diamond
Prices start from $373 USDSave up to $1,537 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
$373 USD