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Round|Lab Grown|IGI

3.09ct E SI1 Round Lab Grown Diamond

ID • E/SI1 • IGI LG536293055

Shape and cutting style on the report: Round brilliant

Certificate IGI LG536293055

Diamond specifications and retailer prices

From £410 GBP
As of November 4, 2026
Save £2,525 GBP (86%) vs most expensive(unlock to see where)
25 retailers carry this diamond
Most expensive: £2,935 GBP at Do Amore Diamonds · As of November 4, 2026
View at Do Amore Diamonds

About this 3.09ct lab-grown round diamond

This 3.09ct 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 LG536293055 or 536293055. Listed at 25 retailers as of November 4, 2026, with prices from £410 to £2,935, a £2,525 spread on the same certified stone. Do Amore Diamonds lists it at £2,935. 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

3.09
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.5°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG536293055
Dimensions9.35 × 9.29 × 5.77 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
9.35 mm9.29 mm3.09 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG536293055
Side View
Table 55.5%Crown 34.5°Girdle: MediumPavilion 40.7°Culet: NoneDepth 61.9%

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 4
Current: £1,884 GBP|Low: £410 GBP|High: £1,912 GBP|Avg: £971 GBP|-1.3%
Retailer 1
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
November 5, 2026
Retailer 5£410 GBP
Retailer 4£568 GBP
Retailer 10£568 GBP
Retailer 3£634 GBP
Retailer 13£639 GBP
Retailer 9£695 GBP
Retailer 7£743 GBP
Retailer 11£1,032 GBP
Retailer 6£1,060 GBP
Retailer 12£1,103 GBP
Retailer 8£1,271 GBP
Retailer 14£1,649 GBP
Retailer 2£1,659 GBP
Retailer 1£1,884 GBP

44 data points across 14 retailers

25 retailers£410 GBP to £2,935 GBP

Retailer 1
-
£331 GBP
Price last confirmed 39 days ago
Retailer 2
-
£370 GBP
View
Price last confirmed 44 days ago
Retailer 3
-
£370 GBP
View
Price last confirmed 31 days ago
Retailer 4
-
£405 GBP
View
Price last confirmed 38 days ago
A
Retailer 5
-
£410 GBP
View
Final sale: no returns
Retailer 6
-
£410 GBP
View
Price last confirmed 27 days ago
Retailer 7
-
£410 GBP
View
Price last confirmed 35 days ago
A
Retailer 8
-
£410 GBP
View
A
Retailer 9
-
£568 GBP
View
A
Retailer 10
-
£568 GBP
View
A
Retailer 11
-
£571 GBP
View
A
Retailer 12
-
£634 GBP
View
B+
Retailer 13
-
£639 GBP
View
A
Retailer 14
-
£695 GBP
View
A
Retailer 15
-
£743 GBP
View
B+
Retailer 16
-
£1,032 GBP
View
B+
Retailer 17
-
£1,060 GBP
View
B+
Retailer 18
-
£1,103 GBP
View
Retailer 19
-
£1,190 GBP
View
Price last confirmed 27 days ago
Retailer 20
-
£1,190 GBP
View
Price last confirmed 37 days ago
B+
Retailer 21
-
£1,271 GBP
View
B
Retailer 22
-
£1,649 GBP
View
B
Retailer 23
-
£1,659 GBP
View
B
Retailer 24
-
£1,884 GBP
View
Most Expensive
B
Do Amore Diamonds
27-7DFE8C2D1 · Nov 4
£2,935 GBP
$3,950 USD
View
24 more retailers have this diamond
Prices start from £410 GBPSave up to £2,525 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
3.09ct Round
£410 GBP