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Marquise|Lab Grown|IGI

3.51ct G VS1 Marquise Lab Grown Diamond

ID • G/VS1 • IGI LG801635337

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG801635337

Diamond specifications and retailer prices

From £329 GBP
$441 USD
As of November 2, 2026
Save £2,123 GBP (87%) vs most expensive(unlock to see where)
25 retailers carry this diamond
Most expensive: £2,452 GBP at Brilliant Earth · As of November 2, 2026
View at Brilliant Earth

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 LG801635337 or 801635337. Listed at 25 retailers as of November 2, 2026, with prices from £329 to £2,452, a £2,123 spread on the same certified stone. Brilliant Earth lists it at £2,452. 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 angle34.6°
Pavilion angle39.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG801635337
Dimensions15.81 × 8.02 × 4.74 mm
L/W Ratio1.97
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
15.81 mm8.02 mm3.51 ctG / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG801635337
Side View
Table 63.0%Crown 34.6°Girdle: STK-THKPavilion 39.9°Culet: NoneDepth 59.1%

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 2
Current: £2,452 GBP|Low: £329 GBP|High: £2,534 GBP|Avg: £990 GBP|-3.2%
Brilliant Earth
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
Retailer 15
Retailer 16
Retailer 17
Retailer 18
November 2, 2026
Retailer 12£329 GBP
Retailer 4£368 GBP
Retailer 8£472 GBP
Retailer 10£472 GBP
Retailer 9£544 GBP
Retailer 14£548 GBP
Retailer 16£645 GBP
Retailer 13£668 GBP
Retailer 7£748 GBP
Retailer 11£888 GBP
Retailer 17£894 GBP
Retailer 5£995 GBP
Retailer 2£999 GBP
Retailer 3£1,335 GBP
Retailer 15£1,463 GBP
Retailer 18£1,525 GBP
Retailer 6£1,978 GBP
Brilliant Earth£2,452 GBP

38 data points across 18 retailers

25 retailers£329 GBP to £2,452 GBP

A
Cheapest Retailer
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£329 GBP
$441 USD
A
Retailer 2
-
£368 GBP
$494 USD
View
Final sale: no returns
Retailer 3
-
£380 GBP
$510 USD
View
Price last confirmed 25 days ago
Retailer 4
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£380 GBP
$510 USD
View
Price last confirmed 16 days ago
Retailer 5
-
£380 GBP
$510 USD
View
Price last confirmed 12 days ago
Retailer 6
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£426 GBP
$571 USD
View
Price last confirmed 8 days ago
Retailer 7
-
£426 GBP
$571 USD
View
Price last confirmed 34 days ago
Retailer 8
-
£465 GBP
$624 USD
View
Price last confirmed 38 days ago
Retailer 9
-
£472 GBP
$633 USD
View
Price last confirmed 30 days ago
Retailer 10
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£472 GBP
$633 USD
View
Price last confirmed 17 days ago
A
Retailer 11
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£544 GBP
$730 USD
View
B+
Retailer 12
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£548 GBP
$735 USD
View
A
Retailer 13
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£645 GBP
$865 USD
View
A
Retailer 14
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£668 GBP
View
A
Retailer 15
-
£888 GBP
ZAR 19,257 ZAR
View
A
Retailer 16
-
£894 GBP
$1,200 USD
View
A
Retailer 17
-
£995 GBP
A$2,055 AUD
View
A
Retailer 18
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£999 GBP
$1,340 USD
View
Retailer 19
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£1,240 GBP
$1,664 USD
View
Price last confirmed 33 days ago
Retailer 20
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£1,240 GBP
$1,664 USD
View
Price last confirmed 8 days ago
B+
Retailer 21
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£1,335 GBP
$1,792 USD
View
B+
Retailer 22
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£1,463 GBP
$1,964 USD
View
B+
Retailer 23
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£1,525 GBP
$2,047 USD
View
B
Retailer 24
-
£1,978 GBP
View
Most Expensive
B
Brilliant Earth
20042804A · Nov 2
£2,452 GBP
$3,290 USD
View
24 more retailers have this diamond
Prices start from £329 GBPSave up to £2,123 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
3.51ct Marquise
£329 GBP