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Marquise|Lab Grown|IGI

3.51ct D VS2 Marquise Lab Grown Diamond

VG • D/VS2 • IGI LG848653630

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG848653630

Diamond specifications and retailer prices

From £1,275 GBP
As of October 31, 2026
Save £650 GBP (34%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: £1,925 GBP at Diamond Exchange Canada · As of October 30, 2026
View at Diamond Exchange Canada

About this 3.51ct lab-grown marquise diamond

This 3.51ct lab-grown marquise sits in the three to five carat band, graded D colour (colourless) and VS2 clarity (very-slightly-included), with a very-good cut grade and certified by IGI LG848653630 or 848653630. Listed at 2 retailers as of October 30, 2026, with prices from £1,275 to £1,925, a £650 spread on the same certified stone. Diamond Exchange Canada lists it at £1,925. 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

3.51
Carat
D
Colour
VS2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.7°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG848653630
Dimensions16.67 × 7.76 × 4.83 mm
L/W Ratio2.15
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
16.67 mm7.76 mm3.51 ctD / VS2
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG848653630
Side View
Table 62.0%Crown 32.7°Girdle: MED-STKPavilion 40.8°CuletDepth 62.2%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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Price History

Last verified: Oct 31
Current: £1,925 GBP|Low: £1,275 GBP|High: £1,925 GBP|Avg: £1,708 GBP
Diamond Exchange Canada
Retailer 2
October 31, 2026
Retailer 2£1,275 GBP
Diamond Exchange Canada£1,925 GBP

2 data points across 2 retailers

2 retailers£1,275 GBP to £1,925 GBP

B+
Cheapest Retailer
-
£1,275 GBP
Most Expensive
B
Diamond Exchange Canada
1996944519 · Oct 30
£1,925 GBP
CA$3,583 CAD
View
1 more retailer has this diamond
Prices start from £1,275 GBPSave up to £650 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
£1,275 GBP