CaratHunter
Plans
Round|Lab Grown|IGI

3.78ct H VS1 Round Lab Grown Diamond

ID • H/VS1 • IGI LG621406218

Shape and cutting style on the report: Round brilliant

Certificate IGI LG621406218

Diamond specifications and retailer prices

From €1,330 EUR
CA$2,064 CAD
As of October 30, 2026
Save €430 EUR (24%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: €1,760 EUR at The Diamond Guys · As of November 1, 2026
View at The Diamond Guys

About this 3.78ct lab-grown round diamond

This 3.78ct lab-grown round sits in the three to five carat band, graded H colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG621406218 or 621406218. Listed at 2 retailers as of October 30, 2026, with prices from €1,330 to €1,760, a €430 spread on the same certified stone. The Diamond Guys lists it at €1,760. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

3.78
Carat
H
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.3°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG621406218
Dimensions10.08 × 10.03 × 6.13 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
10.08 mm10.03 mm3.78 ctH / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG621406218
Side View
Table 58.0%Crown 34.3°Girdle: MediumPavilion 40.8°Culet: NoneDepth 61.0%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: €553 EUR|Low: €259 EUR|High: €3,160 EUR|Avg: €1,203 EUR|-13.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
The Diamond Guys
August 12, 2026
Retailer 12€281 EUR
Retailer 1€553 EUR
Retailer 5€573 EUR
Retailer 4€671 EUR
Retailer 2€738 EUR
Retailer 8€818 EUR
Retailer 10€888 EUR
Retailer 9€1,124 EUR
Retailer 11€1,220 EUR
Retailer 3€1,330 EUR
Retailer 7€1,700 EUR
The Diamond Guys€1,760 EUR
Retailer 6€3,160 EUR

62 data points across 13 retailers

2 retailers€1,330 EUR to €1,760 EUR

B+
Cheapest Retailer
-
€1,330 EUR
CA$2,064 CAD
Most Expensive
B
The Diamond Guys
1954433964 · Nov 1
€1,760 EUR
$1,966 USD
View
1 more retailer has this diamond
Prices start from €1,330 EURSave up to €430 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.

B+
3.78ct Round
€1,330 EUR