Asscher|Lab Grown|IGI

4.00ct D SI1 Asscher Lab Grown Diamond

VG • D/SI1 • IGI LG642492214

Shape and cutting style on the report: Square emerald cut

Certificate IGI LG642492214

Diamond specifications and retailer prices

From £390 GBP
As of November 4, 2026
Save £1,192 GBP (75%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £2,719 GBP at Rare Carat · As of September 28, 2026
View at Rare Carat

About this 4ct lab-grown asscher diamond

This 4ct lab-grown asscher sits in the three to five carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG642492214 or 642492214. Listed at 11 retailers as of November 4, 2026, with a 306% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

4.00
Carat
D
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle42.7°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG642492214
Dimensions8.56 × 8.28 × 5.90 mm
L/W Ratio1.03
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
8.56 mm8.28 mm4.00 ctD / SI1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG642492214
Side View
Table 67.0%Crown 42.7°Girdle: ThickPavilion 40.8°Culet: NoneDepth 71.3%

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 4
Current: £2,719 GBP|Low: £390 GBP|High: £2,719 GBP|Avg: £999 GBP
Rare Carat
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 11£390 GBP
Retailer 3£460 GBP
Retailer 9£539 GBP
Retailer 7£580 GBP
Retailer 5£648 GBP
Retailer 6£681 GBP
Retailer 2£709 GBP
Retailer 10£1,410 GBP
Retailer 8£1,453 GBP
Retailer 4£1,582 GBP
Rare Carat£2,719 GBP

44 data points across 11 retailers

11 retailers£390 GBP to £1,582 GBP

A
Cheapest Retailer
-
£390 GBP
Final sale: no returns
A
Retailer 2
-
£539 GBP
View
B+
Retailer 3
-
£580 GBP
View
Retailer 4
-
£648 GBP
View
Price last confirmed 8 days ago
A
Retailer 5
-
£681 GBP
View
A
Retailer 6
-
£709 GBP
View
B
Retailer 7
-
£1,410 GBP
View
B
Retailer 8
-
£1,453 GBP
View
B+
Retailer 9
-
£1,549 GBP
View
B
Retailer 10
-
£1,582 GBP
View
Most Expensive
Rare Carat
ST-26482_l_642492214 · Sep 28
£2,719 GBP
$3,660 USD
View
Price last confirmed 38 days ago
10 more retailers have this diamond
Prices start from £390 GBPSave up to £1,192 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
4.00ct Asscher
£390 GBP