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Asscher|Lab Grown|IGI

3.05ct E SI1 Asscher Lab Grown Diamond

ID • E/SI1 • IGI LG551278997

Shape and cutting style on the report: Square emerald cut

Certificate IGI LG551278997

Diamond specifications and retailer prices

From £344 GBP
HK$3,600 HKD
As of October 30, 2026
Save £1,388 GBP (80%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £1,731 GBP at Rare Carat · As of October 28, 2026
View at Rare Carat

About this 3.05ct lab-grown asscher diamond

This 3.05ct 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 LG551278997 or 551278997. Listed at 10 retailers as of October 28, 2026, with prices from £344 to £1,731, a £1,388 spread on the same certified stone. Rare Carat lists it at £1,731. 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

3.05
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.1°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG551278997
Dimensions7.94 × 7.94 × 5.33 mm
L/W Ratio1.00
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
7.94 mm7.94 mm3.05 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG551278997
Side View
Table 66.0%Crown 38.1°Girdle: MediumPavilion 41°Culet: NoneDepth 67.1%

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: £1,731 GBP|Low: £344 GBP|High: £3,799 GBP|Avg: £1,200 GBP
Rare Carat
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 9£344 GBP
Retailer 5£384 GBP
Retailer 6£425 GBP
Retailer 11£504 GBP
Retailer 8£550 GBP
Retailer 2£561 GBP
Retailer 12£720 GBP
Retailer 10£1,038 GBP
Retailer 7£1,260 GBP
Rare Carat£1,731 GBP
Retailer 3£2,742 GBP
Retailer 4£3,799 GBP

4 data points across 12 retailers

10 retailers£344 GBP to £1,731 GBP

A
Cheapest Retailer
-
£344 GBP
HK$3,600 HKD
A
Retailer 2
-
£384 GBP
View
A
Retailer 3
-
£425 GBP
$570 USD
View
B+
Retailer 4
-
£504 GBP
$675 USD
View
A
Retailer 5
-
£550 GBP
$737 USD
View
A
Retailer 6
-
£561 GBP
View
B+
Retailer 7
-
£1,038 GBP
$1,390 USD
View
B
Retailer 8
-
£1,225 GBP
View
B
Retailer 9
-
£1,260 GBP
View
Most Expensive
B
Rare Carat
KI9972789KF551 · Oct 28
£1,731 GBP
$2,320 USD
View
9 more retailers have this diamond
Prices start from £344 GBPSave up to £1,388 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
3.05ct Asscher
£344 GBP