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Marquise|Lab Grown|IGI

3.80ct G VS1 Marquise Lab Grown Diamond

ID • G/VS1 • IGI LG837683414

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG837683414

Diamond specifications and retailer prices

From £339 GBP
$454 USD
As of October 30, 2026
Save £1,710 GBP (83%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £2,049 GBP at Rare Carat · As of October 28, 2026
View at Rare Carat

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 LG837683414 or 837683414. Listed at 14 retailers as of October 28, 2026, with prices from £339 to £2,049, a £1,710 spread on the same certified stone. Rare Carat lists it at £2,049. 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
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle40.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG837683414
Dimensions16.54 × 8.17 × 5.04 mm
L/W Ratio2.02
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
16.54 mm8.17 mm3.80 ctG / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG837683414
Side View
Table 58.0%Crown 35°Girdle: MED-STKPavilion 40.4°Culet: NoneDepth 61.7%

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 30
Current: £2,049 GBP|Low: £339 GBP|High: £2,082 GBP|Avg: £1,190 GBP|-1.6%
Rare Carat
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
November 1, 2026
Retailer 14£339 GBP
Retailer 9£379 GBP
Retailer 12£470 GBP
Retailer 8£639 GBP
Retailer 5£721 GBP
Retailer 7£887 GBP
Retailer 11£1,129 GBP
Retailer 10£1,131 GBP
Retailer 4£1,350 GBP
Retailer 3£1,468 GBP
Retailer 2£1,543 GBP
Retailer 6£1,758 GBP
Retailer 13£1,894 GBP
Rare Carat£2,049 GBP

29 data points across 14 retailers

14 retailers£339 GBP to £2,049 GBP

A
Cheapest Retailer
-
£339 GBP
$454 USD
A
Retailer 2
-
£379 GBP
$508 USD
View
Retailer 3
-
£470 GBP
View
Price last confirmed 15 days ago
A
Retailer 4
-
£639 GBP
€815 EUR
View
A
Retailer 5
-
£721 GBP
$966 USD
View
A
Retailer 6
-
£887 GBP
A$1,829 AUD
View
A
Retailer 7
-
£1,129 GBP
$1,513 USD
View
B+
Retailer 8
-
£1,131 GBP
$1,515 USD
View
B+
Retailer 9
-
£1,350 GBP
$1,809 USD
View
B+
Retailer 10
-
£1,468 GBP
$1,967 USD
View
B+
Retailer 11
-
£1,543 GBP
View
Retailer 12
-
£1,758 GBP
SGD 3,183 SGD
View
Price last confirmed 19 days ago
B+
Retailer 13
-
£1,894 GBP
$2,538 USD
View
Most Expensive
B+
Rare Carat
LGMQ30-152734 · Oct 28
£2,049 GBP
$2,745 USD
View
13 more retailers have this diamond
Prices start from £339 GBPSave up to £1,710 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
3.80ct Marquise
£339 GBP