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Marquise|Lab Grown|IGI

4.00ct G VS1 Marquise Lab Grown Diamond

EX • G/VS1 • IGI LG823627970

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG823627970

Diamond specifications and retailer prices

From £2,694 GBP
$3,610 USD
As of October 31, 2026
3 retailers carry this diamond
Most expensive: £2,694 GBP at Brilliant Earth
View at Brilliant Earth

About this 4ct lab-grown marquise diamond

This 4ct 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 LG823627970 or 823627970. Listed at 3 retailers as of October 31, 2026. 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

4.00
Carat
G
Colour
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle39.3°
Pavilion angle39.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG823627970
Dimensions16.45 × 8.04 × 5.15 mm
L/W Ratio2.05
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
16.45 mm8.04 mm4.00 ctG / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG823627970
Side View
Table 62.0%Crown 39.3°Girdle: MED-STKPavilion 39.9°Culet: NoneDepth 64.1%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Oct 31
Current: £2,694 GBP|Low: £497 GBP|High: £2,754 GBP|Avg: £1,219 GBP|-2.2%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
September 16, 2026
Retailer 7£497 GBP
Retailer 5£612 GBP
Retailer 10£669 GBP
Retailer 2£738 GBP
Retailer 3£1,020 GBP
Retailer 8£1,102 GBP
Retailer 6£1,487 GBP
Retailer 4£1,952 GBP
Retailer 9£2,009 GBP
Brilliant Earth£2,694 GBP

26 data points across 10 retailers

3 retailers

Retailer 1
-
£497 GBP
HK$5,200 HKD
Price last confirmed 59 days ago
Retailer 2
-
£2,009 GBP
$2,692 USD
View
Price last confirmed 47 days ago
Most Expensive
B
Brilliant Earth
20860411A · Oct 31
£2,694 GBP
$3,610 USD
View
2 more retailers have this diamond

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
4.00ct Marquise
£2,694 GBP