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Marquise|Lab Grown|IGI

3.51ct G VS1 Marquise Lab Grown Diamond

ID • G/VS1 • IGI LG818653105

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG818653105

Diamond specifications and retailer prices

From £2,638 GBP
$3,540 USD
As of November 2, 2026
13 retailers carry this diamond
Most expensive: £3,502 GBP at Do Amore Diamonds · As of October 26, 2026
View at Do Amore Diamonds

About this 3.51ct lab-grown marquise diamond

This 3.51ct 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 LG818653105 or 818653105. Listed at 13 retailers as of November 2, 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

3.51
Carat
G
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.4°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818653105
Dimensions15.32 × 7.91 × 4.99 mm
L/W Ratio1.94
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
15.32 mm7.91 mm3.51 ctG / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818653105
Side View
Table 60.0%Crown 34.4°Girdle: STK-THKPavilion 40.5°Culet: NoneDepth 63.1%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Nov 2
Current: £3,502 GBP|Low: £589 GBP|High: £3,502 GBP|Avg: £1,515 GBP
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
October 27, 2026
Retailer 7£589 GBP
Retailer 13£601 GBP
Retailer 4£709 GBP
Retailer 3£756 GBP
Retailer 8£807 GBP
Retailer 6£833 GBP
Retailer 10£1,162 GBP
Retailer 11£1,262 GBP
Retailer 12£1,813 GBP
Retailer 5£1,835 GBP
Retailer 9£1,923 GBP
Retailer 2£2,638 GBP
Do Amore Diamonds£3,502 GBP

21 data points across 13 retailers

13 retailers

Retailer 1
-
£589 GBP
$790 USD
Price last confirmed 8 days ago
Retailer 2
-
£601 GBP
View
Price last confirmed 11 days ago
Retailer 3
-
£709 GBP
$952 USD
View
Price last confirmed 7 days ago
Retailer 4
-
£756 GBP
$1,015 USD
View
Price last confirmed 10 days ago
Retailer 5
-
£807 GBP
€1,032 EUR
View
Price last confirmed 8 days ago
Retailer 6
-
£833 GBP
View
Price last confirmed 7 days ago
Retailer 7
-
£1,162 GBP
ZAR 25,186 ZAR
View
Price last confirmed 9 days ago
Retailer 8
-
£1,262 GBP
$1,694 USD
View
Price last confirmed 7 days ago
Retailer 9
-
£1,813 GBP
$2,433 USD
View
Price last confirmed 7 days ago
Retailer 10
-
£1,835 GBP
$2,462 USD
View
Price last confirmed 7 days ago
Retailer 11
-
£1,923 GBP
$2,580 USD
View
Price last confirmed 8 days ago
B
Retailer 12
-
£2,638 GBP
$3,540 USD
View
Most Expensive
Do Amore Diamonds
27-8E1241D7A · Oct 26
£3,502 GBP
$4,700 USD
View
Price last confirmed 7 days ago
12 more retailers have this diamond
Prices start from £2,638 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.

B
3.51ct Marquise
£2,638 GBP