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Round|Lab Grown|IGI

3.51ct F SI1 Round Lab Grown Diamond

EX • F/SI1 • IGI LG819620033

Shape and cutting style on the report: Round brilliant

Certificate IGI LG819620033

Diamond specifications and retailer prices

From €333 EUR
$372 USD
As of November 1, 2026
Save €1,851 EUR (85%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: €2,184 EUR at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

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 LG819620033 or 819620033. Listed at 11 retailers as of October 31, 2026, with prices from €333 to €2,184, a €1,851 spread on the same certified stone. Brilliant Earth lists it at €2,184. 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
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.2°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG819620033
Dimensions9.82 × 9.89 × 5.83 mm
L/W Ratio1.01
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
9.82 mm9.89 mm3.51 ctF / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG819620033
Side View
Table 61.0%Crown 32.2°Girdle: MED-STKPavilion 40.9°Culet: NoneDepth 59.2%

Caratlytics Score

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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: Nov 1
Current: €2,184 EUR|Low: €329 EUR|High: €4,091 EUR|Avg: €1,285 EUR|-46.6%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 30, 2026
Retailer 3€333 EUR
Retailer 8€387 EUR
Retailer 6€578 EUR
Retailer 2€664 EUR
Retailer 9€779 EUR
Retailer 7€1,212 EUR
Retailer 5€1,213 EUR
Retailer 10€1,328 EUR
Retailer 4€1,618 EUR
Retailer 11€1,676 EUR
Brilliant Earth€2,184 EUR

30 data points across 11 retailers

11 retailers€333 EUR to €2,184 EUR

A
Cheapest Retailer
-
€333 EUR
$372 USD
A
Retailer 2
-
€387 EUR
$432 USD
View
Retailer 3
-
€578 EUR
£509 GBP
View
Price last confirmed 16 days ago
A
Retailer 4
-
€664 EUR
View
A
Retailer 5
-
€779 EUR
$870 USD
View
B+
Retailer 6
-
€1,212 EUR
$1,354 USD
View
B+
Retailer 7
-
€1,213 EUR
$1,355 USD
View
B+
Retailer 8
-
€1,328 EUR
$1,484 USD
View
B+
Retailer 9
-
€1,618 EUR
£1,423 GBP
View
Retailer 10
-
€1,676 EUR
SGD 2,530 SGD
View
Price last confirmed 20 days ago
Most Expensive
B
Brilliant Earth
20802674A · Oct 31
€2,184 EUR
$2,440 USD
View
10 more retailers have this diamond
Prices start from €333 EURSave up to €1,851 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
€333 EUR