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Round|Lab Grown|IGI

3.51ct F SI1 Round Lab Grown Diamond

ID • F/SI1 • IGI LG616408199

Shape and cutting style on the report: Round brilliant

Certificate IGI LG616408199

Diamond specifications and retailer prices

From €363 EUR
$405 USD
As of October 26, 2026
Save €2,851 EUR (89%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: €4,914 EUR at Jared · As of October 28, 2026
View at Jared

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 LG616408199 or 616408199. Listed at 12 retailers as of October 26, 2026, with a 786% 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

3.51
Carat
F
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.2°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG616408199
Dimensions9.75 × 9.78 × 5.96 mm
L/W Ratio1.00
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
9.75 mm9.78 mm3.51 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG616408199
Side View
Table 59.0%Crown 34.2°Girdle: MediumPavilion 40.8°Culet: NoneDepth 61.0%

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: €1,830 EUR|Low: €300 EUR|High: €3,330 EUR|Avg: €1,339 EUR|-3.0%
Retailer 1
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€363 EUR
Retailer 10€405 EUR
Retailer 2€420 EUR
Retailer 8€693 EUR
Retailer 9€712 EUR
Retailer 13€712 EUR
Retailer 6€797 EUR
Retailer 4€888 EUR
Retailer 5€935 EUR
Retailer 11€1,259 EUR
Retailer 12€1,593 EUR
Retailer 1€1,830 EUR
Retailer 7€2,047 EUR
Retailer 3€2,972 EUR
Retailer 14€3,213 EUR

24 data points across 15 retailers

12 retailers€363 EUR to €3,213 EUR

A
Cheapest Retailer
-
€363 EUR
$405 USD
A
Retailer 2
-
€405 EUR
$453 USD
View
A
Retailer 3
-
€420 EUR
$469 USD
View
Final sale: no returns
A
Retailer 4
-
€693 EUR
£610 GBP
View
A
Retailer 5
-
€712 EUR
$795 USD
View
B+
Retailer 6
-
€712 EUR
$795 USD
View
B
Retailer 7
-
€1,259 EUR
$1,407 USD
View
B+
Retailer 8
-
€1,593 EUR
$1,780 USD
View
B
Retailer 9
-
€1,830 EUR
£1,610 GBP
View
B
Retailer 10
-
€2,972 EUR
$3,320 USD
View
B
Retailer 11
-
€3,213 EUR
$3,590 USD
View
Most Expensive
Jared
149932601 · Oct 28
€4,914 EUR
$5,490 USD
View
Price under review
11 more retailers have this diamond
Prices start from €363 EURSave up to €2,851 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
3.51ct Round
€363 EUR