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Marquise|Lab Grown|IGI

3.77ct F VS1 Marquise Lab Grown Diamond

EX • F/VS1 • IGI LG811691102

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG811691102

Diamond specifications and retailer prices

From £434 GBP
$582 USD
As of November 1, 2026
Save £1,943 GBP (82%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: £2,377 GBP at Rare Carat · As of October 28, 2026
View at Rare Carat

About this 3.77ct lab-grown marquise diamond

This 3.77ct lab-grown marquise sits in the three to five carat band, graded F colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG811691102 or 811691102. Listed at 4 retailers as of October 28, 2026, with prices from £434 to £2,377, a £1,943 spread on the same certified stone. Rare Carat lists it at £2,377. 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

3.77
Carat
F
Colour
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.4°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG811691102
Dimensions15.69 × 8.21 × 5.12 mm
L/W Ratio1.91
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
15.69 mm8.21 mm3.77 ctF / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG811691102
Side View
Table 62.0%Crown 35.4°Girdle: STK-THKPavilion 40.5°Culet: NoneDepth 62.4%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 1
Current: £2,377 GBP|Low: £434 GBP|High: £2,525 GBP|Avg: £1,283 GBP|-5.9%
Rare Carat
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 2, 2026
Retailer 3£434 GBP
Retailer 8£731 GBP
Retailer 2£775 GBP
Retailer 4£816 GBP
Retailer 9£1,136 GBP
Retailer 5£1,172 GBP
Retailer 7£1,306 GBP
Retailer 6£1,573 GBP
Retailer 10£1,948 GBP
Rare Carat£2,377 GBP

38 data points across 10 retailers

4 retailers£434 GBP to £2,377 GBP

A
Cheapest Retailer
-
£434 GBP
$582 USD
Final sale: no returns
A
Retailer 2
-
£775 GBP
View
Retailer 3
-
£2,030 GBP
A$4,191 AUD
View
Price last confirmed 121 days ago
Most Expensive
B
Rare Carat
811691102 · Oct 28
£2,377 GBP
$3,190 USD
View
3 more retailers have this diamond
Prices start from £434 GBPSave up to £1,943 GBP

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 Marquise
£434 GBP