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Marquise|Lab Grown|IGI

3.46ct G VS1 Marquise Lab Grown Diamond

EX • G/VS1 • IGI LG752541496

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG752541496

Diamond specifications and retailer prices

From £355 GBP
$476 USD
As of November 1, 2026
Save £2,056 GBP (85%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: £2,426 GBP at Brilliant Earth · As of October 8, 2026
View at Brilliant Earth

About this 3.46ct lab-grown marquise diamond

This 3.46ct 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 LG752541496 or 752541496. Listed at 5 retailers as of November 1, 2026, with a 579% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

3.46
Carat
G
Colour
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.5°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG752541496
Dimensions15.13 × 8.13 × 4.95 mm
L/W Ratio1.86
Girdle conditionFaceted
Culet sizePointed
Top View
15.13 mm8.13 mm3.46 ctG / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG752541496
Side View
Table 61.0%Crown 34.5°Girdle: MED-STKPavilion 40.5°Culet: NoneDepth 60.9%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: £2,426 GBP|Low: £355 GBP|High: £2,493 GBP|Avg: £1,014 GBP|-2.7%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 31, 2026
Retailer 5£355 GBP
Retailer 7£502 GBP
Retailer 9£571 GBP
Retailer 11£590 GBP
Retailer 8£650 GBP
Retailer 10£735 GBP
Retailer 4£893 GBP
Retailer 12£965 GBP
Retailer 3£1,157 GBP
Retailer 2£1,302 GBP
Retailer 6£2,412 GBP
Brilliant Earth£2,426 GBP

21 data points across 12 retailers

5 retailers£355 GBP to £2,412 GBP

A
Cheapest Retailer
-
£355 GBP
$476 USD
Final sale: no returns
B+
Retailer 2
-
£502 GBP
$672 USD
View
B+
Retailer 3
-
£1,302 GBP
$1,744 USD
View
B
Retailer 4
-
£2,412 GBP
$3,231 USD
View
Most Expensive
Brilliant Earth
17322975A · Oct 8
£2,426 GBP
$3,250 USD
View
Price last confirmed 25 days ago
4 more retailers have this diamond
Prices start from £355 GBPSave up to £2,056 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
3.46ct Marquise
£355 GBP