CaratHunter
Plans
Oval|Lab Grown|IGI

3.03ct F SI1 Oval Lab Grown Diamond

EX • F/SI1 • IGI LG678584091

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG678584091

Diamond specifications and retailer prices

From £319 GBP
As of November 6, 2026
Save £2,968 GBP (90%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £3,287 GBP at Brilliant Earth · As of November 6, 2026
View at Brilliant Earth

About this 3.03ct lab-grown oval diamond

This 3.03ct lab-grown oval sits in the three to five carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG678584091 or 678584091. Listed at 16 retailers as of November 6, 2026, with prices from £319 to £3,287, a £2,968 spread on the same certified stone. Brilliant Earth lists it at £3,287. 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

3.03
Carat
F
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.4°
Pavilion angle40.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG678584091
Dimensions11.72 × 8.04 × 4.97 mm
L/W Ratio1.46
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.72 mm8.04 mm3.03 ctF / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG678584091
Side View
Table 63.0%Crown 35.4°Girdle: MED-STKPavilion 40.4°Culet: NoneDepth 61.8%

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 6
Current: £3,287 GBP|Low: £319 GBP|High: £3,392 GBP|Avg: £1,077 GBP|-3.1%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 10£319 GBP
Retailer 4£481 GBP
Retailer 2£578 GBP
Retailer 11£622 GBP
Retailer 8£624 GBP
Retailer 5£645 GBP
Retailer 3£772 GBP
Retailer 9£1,109 GBP
Retailer 7£1,375 GBP
Retailer 6£1,448 GBP
Brilliant Earth£3,287 GBP

40 data points across 11 retailers

16 retailers£319 GBP to £3,287 GBP

Retailer 1
-
£319 GBP
Price last confirmed 38 days ago
A
Retailer 2
-
£319 GBP
View
Retailer 3
-
£319 GBP
View
Price last confirmed 16 days ago
Retailer 4
-
£357 GBP
View
Price last confirmed 41 days ago
Retailer 5
-
£390 GBP
View
Price last confirmed 38 days ago
A
Retailer 6
-
£481 GBP
View
A
Retailer 7
-
£578 GBP
View
B+
Retailer 8
-
£622 GBP
View
A
Retailer 9
-
£624 GBP
View
A
Retailer 10
-
£645 GBP
View
A
Retailer 11
-
£772 GBP
View
B+
Retailer 12
-
£1,109 GBP
View
Retailer 13
-
£1,270 GBP
View
Price last confirmed 37 days ago
B+
Retailer 14
-
£1,375 GBP
View
B+
Retailer 15
-
£1,448 GBP
View
Most Expensive
B
Brilliant Earth
21567551A · Nov 6
£3,287 GBP
$4,400 USD
View
15 more retailers have this diamond
Prices start from £319 GBPSave up to £2,968 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
3.03ct Oval
£319 GBP