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Round|Lab Grown|IGI

3.08ct E SI1 Round Lab Grown Diamond

ID • E/SI1 • IGI LG685591086

Shape and cutting style on the report: Round brilliant

Certificate IGI LG685591086

Diamond specifications and retailer prices

From £260 GBP
As of November 5, 2026
Save £1,055 GBP (80%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £1,315 GBP at Rare Carat · As of November 4, 2026
View at Rare Carat

About this 3.08ct lab-grown round diamond

This 3.08ct lab-grown round 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 LG685591086 or 685591086. Listed at 14 retailers as of November 4, 2026, with prices from £260 to £1,315, a £1,055 spread on the same certified stone. Rare Carat lists it at £1,315. 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

3.08
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.7°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG685591086
Dimensions9.37 × 9.41 × 5.74 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
9.37 mm9.41 mm3.08 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG685591086
Side View
Table 57.0%Crown 34.7°Girdle: MediumPavilion 40.8°Culet: NoneDepth 61.1%

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: Nov 5
Current: £1,315 GBP|Low: £260 GBP|High: £3,149 GBP|Avg: £862 GBP|-3.3%
Rare Carat
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
November 5, 2026
Retailer 11£260 GBP
Retailer 10£302 GBP
Retailer 12£322 GBP
Retailer 4£361 GBP
Retailer 2£428 GBP
Retailer 15£435 GBP
Retailer 3£517 GBP
Retailer 6£518 GBP
Retailer 9£573 GBP
Retailer 5£707 GBP
Retailer 14£946 GBP
Retailer 13£1,037 GBP
Retailer 8£1,256 GBP
Rare Carat£1,315 GBP
Retailer 7£3,149 GBP

9 data points across 15 retailers

14 retailers£260 GBP to £1,315 GBP

A
Cheapest Retailer
-
£260 GBP
A
Retailer 2
-
£302 GBP
View
A
Retailer 3
-
£322 GBP
View
A
Retailer 4
-
£361 GBP
View
A
Retailer 5
-
£428 GBP
View
A
Retailer 6
-
£435 GBP
View
Retailer 7
-
£517 GBP
View
Price last confirmed 8 days ago
B+
Retailer 8
-
£518 GBP
View
A
Retailer 9
-
£573 GBP
View
A
Retailer 10
-
£707 GBP
View
B+
Retailer 11
-
£946 GBP
View
B+
Retailer 12
-
£1,037 GBP
View
B
Retailer 13
-
£1,256 GBP
View
Most Expensive
B
Rare Carat
KI0865910KF685 · Nov 4
£1,315 GBP
$1,770 USD
View
13 more retailers have this diamond
Prices start from £260 GBPSave up to £1,055 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
3.08ct Round
£260 GBP