CaratHunter
Plans
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 €332 EUR
$372 USD
As of November 1, 2026
Save €1,844 EUR (85%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: €2,175 EUR at Brilliant Earth · As of November 2, 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 10 retailers as of November 1, 2026, with prices from €332 to €2,175, a €1,844 spread on the same certified stone. Brilliant Earth lists it at €2,175. 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
Colour
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

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: Nov 1
Current: €2,175 EUR|Low: €328 EUR|High: €4,075 EUR|Avg: €1,280 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€332 EUR
Retailer 8€385 EUR
Retailer 6€576 EUR
Retailer 2€662 EUR
Retailer 9€776 EUR
Retailer 7€1,207 EUR
Retailer 5€1,208 EUR
Retailer 10€1,323 EUR
Retailer 4€1,611 EUR
Retailer 11€1,669 EUR
Brilliant Earth€2,175 EUR

30 data points across 11 retailers

10 retailers€332 EUR to €2,175 EUR

A
Cheapest Retailer
-
€332 EUR
$372 USD
A
Retailer 2
-
€385 EUR
$432 USD
View
A
Retailer 3
-
€662 EUR
View
A
Retailer 4
-
€776 EUR
$870 USD
View
B+
Retailer 5
-
€1,207 EUR
$1,354 USD
View
B+
Retailer 6
-
€1,208 EUR
$1,355 USD
View
B+
Retailer 7
-
€1,323 EUR
$1,484 USD
View
Retailer 8
-
€1,611 EUR
£1,423 GBP
View
Price last confirmed 7 days ago
Retailer 9
-
€1,669 EUR
SGD 2,530 SGD
View
Price last confirmed 21 days ago
Most Expensive
B
Brilliant Earth
20802674A · Nov 2
€2,175 EUR
$2,440 USD
View
9 more retailers have this diamond
Prices start from €332 EURSave up to €1,844 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
€332 EUR