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Marquise|Lab Grown|IGI

3.91ct G VS1 Marquise Lab Grown Diamond

VG • G/VS1 • IGI LG835610765

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG835610765

Diamond specifications and retailer prices

From £497 GBP
HK$5,200 HKD
As of November 1, 2026
Save £2,063 GBP (81%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: £2,560 GBP at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 3.91ct lab-grown marquise diamond

This 3.91ct lab-grown marquise sits in the three to five carat band, graded G colour (near-colourless) and VS1 clarity (very-slightly-included), with a very-good cut grade and certified by IGI LG835610765 or 835610765. Listed at 24 retailers as of October 31, 2026, with prices from £497 to £2,560, a £2,063 spread on the same certified stone. Brilliant Earth lists it at £2,560. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

3.91
Carat
G
Colour
VS1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.1°
Pavilion angle39.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG835610765
Dimensions16.07 × 8.32 × 5.15 mm
L/W Ratio1.93
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
16.07 mm8.32 mm3.91 ctG / VS1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG835610765
Side View
Table 60.0%Crown 36.1°Girdle: MED-STKPavilion 39.8°Culet: NoneDepth 61.9%

Caratlytics Score

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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: Nov 1
Current: £2,560 GBP|Low: £354 GBP|High: £2,858 GBP|Avg: £1,091 GBP|-8.0%
Brilliant Earth
Retailer 2
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Retailer 24
October 31, 2026
Retailer 15£373 GBP
Retailer 6£418 GBP
Retailer 8£418 GBP
Retailer 23£463 GBP
Retailer 2£497 GBP
Retailer 20£517 GBP
Retailer 18£567 GBP
Retailer 19£674 GBP
Retailer 5£701 GBP
Retailer 22£719 GBP
Retailer 21£766 GBP
Retailer 16£973 GBP
Retailer 11£996 GBP
Retailer 13£1,078 GBP
Retailer 7£1,096 GBP
Retailer 24£1,217 GBP
Retailer 12£1,467 GBP
Retailer 9£1,508 GBP
Retailer 4£1,606 GBP
Retailer 10£1,717 GBP
Retailer 3£1,935 GBP
Retailer 17£1,955 GBP
Retailer 14£2,023 GBP
Brilliant Earth£2,560 GBP

29 data points across 24 retailers

24 retailers£497 GBP to £2,560 GBP

Retailer 1
-
£373 GBP
$500 USD
Price last confirmed 9 days ago
Retailer 2
-
£418 GBP
$560 USD
View
Price last confirmed 8 days ago
Retailer 3
-
£463 GBP
$620 USD
View
Price last confirmed 7 days ago
A
Retailer 4
-
£497 GBP
HK$5,200 HKD
View
A
Retailer 5
-
£517 GBP
View
A
Retailer 6
-
£567 GBP
$760 USD
View
A
Retailer 7
-
£674 GBP
€860 EUR
View
A
Retailer 8
-
£701 GBP
$939 USD
View
B+
Retailer 9
-
£719 GBP
$964 USD
View
A
Retailer 10
-
£766 GBP
View
Retailer 11
-
£973 GBP
A$2,006 AUD
View
Price last confirmed 12 days ago
Retailer 12
-
£996 GBP
ZAR 21,558 ZAR
View
Price last confirmed 8 days ago
A
Retailer 13
-
£1,078 GBP
$1,445 USD
View
B+
Retailer 14
-
£1,096 GBP
$1,468 USD
View
Retailer 15
-
£1,194 GBP
$1,600 USD
View
Price last confirmed 34 days ago
Retailer 16
-
£1,217 GBP
$1,631 USD
View
Price last confirmed 7 days ago
B+
Retailer 17
-
£1,467 GBP
SGD 2,656 SGD
View
B+
Retailer 18
-
£1,508 GBP
$2,020 USD
View
B+
Retailer 19
-
£1,606 GBP
$2,151 USD
View
B
Retailer 20
-
£1,717 GBP
$2,300 USD
View
Retailer 21
-
£1,935 GBP
View
Price last confirmed 7 days ago
B
Retailer 22
-
£1,955 GBP
$2,620 USD
View
B
Retailer 23
-
£2,023 GBP
$2,710 USD
View
Most Expensive
B
Brilliant Earth
21547323A · Oct 31
£2,560 GBP
$3,430 USD
View
23 more retailers have this diamond
Prices start from £497 GBPSave up to £2,063 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
3.91ct Marquise
£497 GBP