Round|Lab Grown|IGI

3.77ct E SI1 Round Lab Grown Diamond

EX • E/SI1 • IGI LG843627448

Shape and cutting style on the report: Round brilliant

Certificate IGI LG843627448

Diamond specifications and retailer prices

From €356 EUR
$398 USD
As of October 29, 2026
Save €1,381 EUR (79%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: €1,835 EUR at Rare Carat · As of October 21, 2026
View at Rare Carat

About this 3.77ct lab-grown round diamond

This 3.77ct 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 LG843627448 or 843627448. Listed at 10 retailers as of October 29, 2026, with a 388% 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

3.77
Carat
E
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.1°
Pavilion angle41.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG843627448
Dimensions10.11 × 10.15 × 6.02 mm
L/W Ratio1.00
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
10.11 mm10.15 mm3.77 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG843627448
Side View
Table 62.0%Crown 32.1°Girdle: MED-STKPavilion 41.5°Culet: NoneDepth 59.4%

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 29
Current: €1,835 EUR|Low: €356 EUR|High: €1,835 EUR|Avg: €1,000 EUR
Rare Carat
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 30, 2026
Retailer 8€356 EUR
Retailer 6€399 EUR
Retailer 2€593 EUR
Retailer 3€708 EUR
Retailer 10€807 EUR
Retailer 7€1,241 EUR
Retailer 5€1,244 EUR
Retailer 9€1,421 EUR
Retailer 4€1,737 EUR
Rare Carat€1,835 EUR

14 data points across 10 retailers

10 retailers€356 EUR to €1,737 EUR

A
Cheapest Retailer
-
€356 EUR
$398 USD
A
Retailer 2
-
€399 EUR
$446 USD
View
A
Retailer 3
-
€593 EUR
£521 GBP
View
A
Retailer 4
-
€708 EUR
View
A
Retailer 5
-
€807 EUR
$902 USD
View
B+
Retailer 6
-
€1,241 EUR
$1,386 USD
View
B+
Retailer 7
-
€1,244 EUR
$1,390 USD
View
B+
Retailer 8
-
€1,421 EUR
$1,588 USD
View
B+
Retailer 9
-
€1,737 EUR
£1,528 GBP
View
Most Expensive
Rare Carat
LGRD30-167316 · Oct 21
€1,835 EUR
$2,050 USD
View
Price last confirmed 10 days ago
9 more retailers have this diamond
Prices start from €356 EURSave up to €1,381 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
3.77ct Round
€356 EUR