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Marquise|Lab Grown|IGI

3.80ct G VS1 Marquise Lab Grown Diamond

ID • G/VS1 • IGI LG812633618

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG812633618

Diamond specifications and retailer prices

From €437 EUR
$488 USD
As of October 31, 2026
Save €2,750 EUR (86%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: €3,187 EUR at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 3.8ct lab-grown marquise diamond

This 3.8ct lab-grown marquise sits in the three to five carat band, graded G colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG812633618 or 812633618. Listed at 4 retailers as of October 31, 2026, with prices from €437 to €3,187, a €2,750 spread on the same certified stone. Brilliant Earth lists it at €3,187. 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

3.80
Carat
G
Color
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.3°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG812633618
Dimensions17.12 × 8.19 × 4.91 mm
L/W Ratio2.09
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
17.12 mm8.19 mm3.80 ctG / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG812633618
Side View
Table 62.0%Crown 34.3°Girdle: MED-STKPavilion 40.3°Culet: NoneDepth 60.0%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 31
Current: €3,187 EUR|Low: €431 EUR|High: €3,285 EUR|Avg: €1,369 EUR|-3.0%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 1, 2026
Retailer 5€434 EUR
Retailer 3€437 EUR
Retailer 7€671 EUR
Retailer 2€826 EUR
Retailer 8€903 EUR
Retailer 9€1,105 EUR
Retailer 6€1,187 EUR
Retailer 10€1,754 EUR
Retailer 4€2,453 EUR
Brilliant Earth€3,187 EUR

37 data points across 10 retailers

4 retailers€437 EUR to €3,187 EUR

A
Cheapest Retailer
-
€437 EUR
$488 USD
Final sale: no returns
A
Retailer 2
-
€826 EUR
£727 GBP
View
Retailer 3
-
€2,453 EUR
$2,740 USD
View
Price last confirmed 14 days ago
Most Expensive
B
Brilliant Earth
20331184A · Oct 31
€3,187 EUR
$3,560 USD
View
3 more retailers have this diamond
Prices start from €437 EURSave up to €2,750 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
3.80ct Marquise
€437 EUR