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Oval|Lab Grown|IGI

3.00ct E SI1 Oval Lab Grown Diamond

EX • E/SI1 • IGI LG818630594

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG818630594

Diamond specifications and retailer prices

From £307 GBP
$412 USD
As of October 30, 2026
Save £2,954 GBP (91%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £3,261 GBP at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

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 LG818630594 or 818630594. Listed at 13 retailers as of October 29, 2026, with prices from £307 to £3,261, a £2,954 spread on the same certified stone. Brilliant Earth lists it at £3,261. 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
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle39.4°
Pavilion angle39.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818630594
Dimensions12.02 × 7.80 × 4.98 mm
L/W Ratio1.54
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
12.02 mm7.80 mm3.00 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818630594
Side View
Table 58.0%Crown 39.4°Girdle: MED-STKPavilion 39.8°Culet: NoneDepth 63.8%

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 30
Current: £3,261 GBP|Low: £219 GBP|High: £3,261 GBP|Avg: £855 GBP
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 30, 2026
Retailer 11£307 GBP
Retailer 3£340 GBP
Retailer 2£418 GBP
Retailer 6£452 GBP
Retailer 10£457 GBP
Retailer 7£564 GBP
Retailer 4£614 GBP
Retailer 8£998 GBP
Retailer 9£1,290 GBP
Retailer 5£1,336 GBP
Brilliant Earth£3,261 GBP

41 data points across 11 retailers

13 retailers£307 GBP to £3,261 GBP

Retailer 1
-
£275 GBP
$368 USD
Price last confirmed 38 days ago
A
Retailer 2
-
£307 GBP
$412 USD
View
Final sale: no returns
Retailer 3
-
£336 GBP
$450 USD
View
Price last confirmed 37 days ago
A
Retailer 4
-
£418 GBP
View
A
Retailer 5
-
£452 GBP
$605 USD
View
B+
Retailer 6
-
£457 GBP
$612 USD
View
A
Retailer 7
-
£614 GBP
View
A
Retailer 8
-
£725 GBP
$972 USD
View
B+
Retailer 9
-
£998 GBP
$1,337 USD
View
B+
Retailer 10
-
£1,123 GBP
$1,505 USD
View
B+
Retailer 11
-
£1,290 GBP
$1,729 USD
View
B+
Retailer 12
-
£1,336 GBP
View
Most Expensive
B
Brilliant Earth
20907018A · Oct 29
£3,261 GBP
$4,370 USD
View
12 more retailers have this diamond
Prices start from £307 GBPSave up to £2,954 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
£307 GBP