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Oval|Lab Grown|IGI

3.00ct E SI1 Oval Lab Grown Diamond

ID • E/SI1 • IGI LG821666557

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG821666557

Diamond specifications and retailer prices

From £310 GBP
$413 USD
As of October 29, 2026
Save £1,110 GBP (78%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £1,420 GBP at MOH London · As of October 29, 2026
View at MOH London

About this 3ct lab-grown oval diamond

This 3ct lab-grown oval 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 LG821666557 or 821666557. Listed at 16 retailers as of October 29, 2026, with prices from £310 to £1,420, a £1,110 spread on the same certified stone. MOH London lists it at £1,420. 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 angle36°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG821666557
Dimensions11.63 × 8.05 × 5.04 mm
L/W Ratio1.44
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.63 mm8.05 mm3.00 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG821666557
Side View
Table 59.0%Crown 36°Girdle: MED-STKPavilion 40.5°Culet: NoneDepth 62.6%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: £1,420 GBP|Low: £297 GBP|High: £1,430 GBP|Avg: £669 GBP|-0.5%
MOH London
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
October 30, 2026
Retailer 10£310 GBP
Retailer 4£347 GBP
Retailer 12£347 GBP
Retailer 6£384 GBP
Retailer 13£384 GBP
Retailer 8£473 GBP
Retailer 7£496 GBP
Retailer 14£607 GBP
Retailer 5£611 GBP
Retailer 2£633 GBP
Retailer 9£1,078 GBP
Retailer 3£1,236 GBP
Retailer 11£1,407 GBP
MOH London£1,420 GBP

42 data points across 14 retailers

16 retailers£310 GBP to £1,420 GBP

A
Cheapest Retailer
-
£310 GBP
$413 USD
A
Retailer 2
-
£347 GBP
$462 USD
View
A
Retailer 3
-
£347 GBP
$462 USD
View
Final sale: no returns
A
Retailer 4
-
£384 GBP
$512 USD
View
A
Retailer 5
-
£384 GBP
$512 USD
View
Retailer 6
-
£473 GBP
View
Price last confirmed 13 days ago
A
Retailer 7
-
£496 GBP
$660 USD
View
B+
Retailer 8
-
£607 GBP
$808 USD
View
A
Retailer 9
-
£611 GBP
$813 USD
View
A
Retailer 10
-
£633 GBP
View
B+
Retailer 11
-
£742 GBP
$988 USD
View
B
Retailer 12
-
£1,078 GBP
$1,436 USD
View
B+
Retailer 13
-
£1,236 GBP
$1,646 USD
View
B+
Retailer 14
-
£1,262 GBP
$1,680 USD
View
B
Retailer 15
-
£1,407 GBP
$1,873 USD
View
Most Expensive
B
MOH London
LG821666557 · Oct 29
£1,420 GBP
View
15 more retailers have this diamond
Prices start from £310 GBPSave up to £1,110 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 Oval
£310 GBP