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Asscher|Lab Grown|IGI

3.00ct E SI1 Asscher Lab Grown Diamond

ID • E/SI1 • IGI LG839603651

Shape and cutting style on the report: Square emerald cut

Certificate IGI LG839603651

Diamond specifications and retailer prices

From £288 GBP
$386 USD
As of October 30, 2026
Save £1,742 GBP (86%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £2,030 GBP at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 3ct lab-grown asscher diamond

This 3ct lab-grown asscher sits in the three to five carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG839603651 or 839603651. Listed at 18 retailers as of October 30, 2026, with prices from £288 to £2,030, a £1,742 spread on the same certified stone. Brilliant Earth lists it at £2,030. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

3.00
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle42.5°
Pavilion angle42.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG839603651
Dimensions8.41 × 7.99 × 4.89 mm
L/W Ratio1.05
Culet sizeLarge
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
8.41 mm7.99 mm3.00 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG839603651
Side View
Table 76.0%Crown 42.5°Girdle: MediumPavilion 42.1°Culet: LargeDepth 61.2%

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: Oct 30
Current: £2,030 GBP|Low: £284 GBP|High: £3,381 GBP|Avg: £924 GBP|-40.0%
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
October 31, 2026
Retailer 18£288 GBP
Retailer 3£322 GBP
Retailer 17£322 GBP
Retailer 10£353 GBP
Retailer 12£357 GBP
Retailer 16£466 GBP
Retailer 6£479 GBP
Retailer 13£574 GBP
Retailer 8£640 GBP
Retailer 2£647 GBP
Retailer 11£855 GBP
Retailer 4£1,137 GBP
Retailer 14£1,148 GBP
Retailer 7£1,176 GBP
Retailer 15£1,333 GBP
Retailer 5£1,397 GBP
Retailer 9£1,705 GBP
Brilliant Earth£2,030 GBP

41 data points across 18 retailers

18 retailers£288 GBP to £2,030 GBP

A
Cheapest Retailer
-
£288 GBP
$386 USD
A
Retailer 2
-
£322 GBP
$431 USD
View
Final sale: no returns
A
Retailer 3
-
£322 GBP
$432 USD
View
A
Retailer 4
-
£353 GBP
$473 USD
View
A
Retailer 5
-
£357 GBP
$478 USD
View
A
Retailer 6
-
£466 GBP
$625 USD
View
B+
Retailer 7
-
£479 GBP
$642 USD
View
A
Retailer 8
-
£574 GBP
€732 EUR
View
A
Retailer 9
-
£640 GBP
$857 USD
View
A
Retailer 10
-
£647 GBP
View
B+
Retailer 11
-
£855 GBP
$1,145 USD
View
B
Retailer 12
-
£1,137 GBP
SGD 2,059 SGD
View
B
Retailer 13
-
£1,148 GBP
$1,538 USD
View
B+
Retailer 14
-
£1,176 GBP
$1,575 USD
View
B
Retailer 15
-
£1,333 GBP
$1,786 USD
View
B
Retailer 16
-
£1,397 GBP
View
B
Retailer 17
-
£1,705 GBP
$2,285 USD
View
Most Expensive
B
Brilliant Earth
21728445A · Oct 30
£2,030 GBP
$2,720 USD
View
17 more retailers have this diamond
Prices start from £288 GBPSave up to £1,742 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
3.00ct Asscher
£288 GBP