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Round|Lab Grown|IGI

3.08ct E SI1 Round Lab Grown Diamond

ID • E/SI1 • IGI LG735588301

Shape and cutting style on the report: Round brilliant

Certificate IGI LG735588301

Diamond specifications and retailer prices

From £276 GBP
As of November 5, 2026
Save £1,380 GBP (83%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £1,657 GBP at Brilliant Earth · As of November 5, 2026
View at Brilliant Earth

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 LG735588301 or 735588301. Listed at 18 retailers as of November 5, 2026, with prices from £276 to £1,657, a £1,380 spread on the same certified stone. Brilliant Earth lists it at £1,657. 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 angle33.7°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG735588301
Dimensions9.32 × 9.35 × 5.76 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
9.32 mm9.35 mm3.08 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG735588301
Side View
Table 56.0%Crown 33.7°Girdle: MediumPavilion 40.9°Culet: NoneDepth 61.7%

Caratlytics Score

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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: £1,657 GBP|Low: £270 GBP|High: £1,657 GBP|Avg: £728 GBP
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
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Retailer 7
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Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
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Retailer 17
November 6, 2026
Retailer 6£276 GBP
Retailer 9£316 GBP
Retailer 16£321 GBP
Retailer 4£343 GBP
Retailer 5£343 GBP
Retailer 14£453 GBP
Retailer 8£461 GBP
Retailer 13£551 GBP
Retailer 2£611 GBP
Retailer 3£633 GBP
Retailer 17£713 GBP
Retailer 15£844 GBP
Retailer 12£1,005 GBP
Retailer 7£1,102 GBP
Retailer 11£1,315 GBP
Retailer 10£1,336 GBP
Brilliant Earth£1,657 GBP

44 data points across 17 retailers

18 retailers£276 GBP to £1,657 GBP

A
Cheapest Retailer
-
£276 GBP
A
Retailer 2
-
£316 GBP
View
Final sale: no returns
A
Retailer 3
-
£321 GBP
View
A
Retailer 4
-
£343 GBP
View
Retailer 5
-
£343 GBP
View
Price last confirmed 12 days ago
A
Retailer 6
-
£453 GBP
View
B+
Retailer 7
-
£461 GBP
View
A
Retailer 8
-
£551 GBP
View
A
Retailer 9
-
£611 GBP
View
A
Retailer 10
-
£633 GBP
View
B+
Retailer 11
-
£713 GBP
View
B+
Retailer 12
-
£844 GBP
View
B+
Retailer 13
-
£872 GBP
View
B+
Retailer 14
-
£1,005 GBP
View
B+
Retailer 15
-
£1,102 GBP
View
B
Retailer 16
-
£1,315 GBP
View
B
Retailer 17
-
£1,336 GBP
View
Most Expensive
B
Brilliant Earth
15921516A · Nov 5
£1,657 GBP
$2,230 USD
View
17 more retailers have this diamond
Prices start from £276 GBPSave up to £1,380 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
£276 GBP