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Asscher|Lab Grown|IGI

3.51ct H VS1 Asscher Lab Grown Diamond

ID • H/VS1 • IGI LG667450436

Shape and cutting style on the report: Square emerald cut

Certificate IGI LG667450436

Diamond specifications and retailer prices

From £783 GBP
$1,049 USD
As of October 30, 2026
Save £355 GBP (31%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: £1,138 GBP at Diamond Quarter · As of October 29, 2026
View at Diamond Quarter

About this 3.51ct lab-grown asscher diamond

This 3.51ct lab-grown asscher sits in the three to five carat band, graded H colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG667450436 or 667450436. Listed at 2 retailers as of October 29, 2026, with prices from £783 to £1,138, a £355 spread on the same certified stone. Diamond Quarter lists it at £1,138. 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
H
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.1°
Pavilion angle39.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG667450436
Dimensions8.41 × 8.23 × 5.44 mm
L/W Ratio1.02
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
8.41 mm8.23 mm3.51 ctH / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG667450436
Side View
Table 65.0%Crown 35.1°Girdle: Slightly ThickPavilion 39.2°Culet: NoneDepth 66.1%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 30
Current: £783 GBP|Low: £753 GBP|High: £3,776 GBP|Avg: £2,613 GBP|-37.7%
Retailer 1
Retailer 2
Retailer 3
September 23, 2026
Retailer 1£783 GBP
Retailer 2£2,556 GBP
Retailer 3£3,776 GBP

6 data points across 3 retailers

2 retailers£783 GBP to £1,138 GBP

A
Cheapest Retailer
-
£783 GBP
$1,049 USD
Most Expensive
B+
Diamond Quarter
3.51VS1HLG3620F9N · Oct 29
£1,138 GBP
View
1 more retailer has this diamond
Prices start from £783 GBPSave up to £355 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 Asscher
£783 GBP