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Round|Lab Grown|IGI

3.51ct F SI1 Round Lab Grown Diamond

ID • F/SI1 • IGI LG619434038

Shape and cutting style on the report: Round brilliant

Certificate IGI LG619434038

Diamond specifications and retailer prices

From $405 USD
As of October 26, 2026
Save $3,185 USD (89%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $3,590 USD at Do Amore Diamonds · As of October 29, 2026
View at Do Amore Diamonds

About this 3.51ct lab-grown round diamond

This 3.51ct lab-grown round sits in the three to five carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG619434038 or 619434038. Listed at 12 retailers as of October 26, 2026, with prices from $405 to $3,590, a $3,185 spread on the same certified stone. Do Amore Diamonds lists it at $3,590. 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

3.51
Carat
F
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.9°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG619434038
Dimensions9.91 × 9.84 × 5.90 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
9.91 mm9.84 mm3.51 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG619434038
Side View
Table 59.0%Crown 33.9°Girdle: THN-MEDPavilion 40.8°Culet: NoneDepth 59.8%

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 26
Current: $3,590 USD|Low: $335 USD|High: $3,720 USD|Avg: $1,349 USD|-3.5%
Do Amore Diamonds
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 15$405 USD
Retailer 10$453 USD
Retailer 4$469 USD
Retailer 8$775 USD
Retailer 9$795 USD
Retailer 13$795 USD
Retailer 7$891 USD
Retailer 5$992 USD
Retailer 6$1,045 USD
Retailer 14$1,286 USD
Retailer 11$1,407 USD
Retailer 12$1,780 USD
Retailer 2$2,045 USD
Retailer 3$2,430 USD
Do Amore Diamonds$3,590 USD

28 data points across 15 retailers

12 retailers$405 USD to $3,590 USD

A
Cheapest Retailer
-
$405 USD
A
Retailer 2
-
$453 USD
View
A
Retailer 3
-
$469 USD
View
Final sale: no returns
A
Retailer 4
-
$775 USD
£610 GBP
View
B+
Retailer 5
-
$795 USD
View
A
Retailer 6
-
$795 USD
View
B+
Retailer 7
-
$1,286 USD
View
B
Retailer 8
-
$1,407 USD
View
B
Retailer 9
-
$1,780 USD
View
B
Retailer 10
-
$2,045 USD
£1,610 GBP
View
B
Retailer 11
-
$2,430 USD
View
Most Expensive
B
Do Amore Diamonds
27-E1E1CCB9A · Oct 29
$3,590 USD
View
11 more retailers have this diamond
Prices start from $405 USDSave up to $3,185 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
3.51ct Round
$405 USD