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Round|Lab Grown|IGI

3.61ct E SI1 Round Lab Grown Diamond

ID • E/SI1 • IGI LG608366181

Shape and cutting style on the report: Round brilliant

Certificate IGI LG608366181

Diamond specifications and retailer prices

From £650 GBP
€829 EUR
As of October 29, 2026
Save £1,477 GBP (69%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £2,127 GBP at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 3.61ct lab-grown round diamond

This 3.61ct 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 LG608366181 or 608366181. Listed at 14 retailers as of October 29, 2026, with prices from £650 to £2,127, a £1,477 spread on the same certified stone. Brilliant Earth lists it at £2,127. 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

3.61
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.6°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG608366181
Dimensions9.83 × 9.80 × 6.07 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
HEARTS & ARROWS This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
9.83 mm9.80 mm3.61 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG608366181
Side View
Table 57.0%Crown 35.6°Girdle: MediumPavilion 40.8°Culet: NoneDepth 61.8%

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 29
Current: £2,127 GBP|Low: £402 GBP|High: £2,261 GBP|Avg: £953 GBP|-5.9%
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 3£402 GBP
Retailer 11£545 GBP
Retailer 5£650 GBP
Retailer 7£664 GBP
Retailer 10£733 GBP
Retailer 8£756 GBP
Retailer 2£785 GBP
Retailer 9£876 GBP
Retailer 6£1,220 GBP
Retailer 4£1,983 GBP
Brilliant Earth£2,127 GBP

36 data points across 11 retailers

14 retailers£650 GBP to £2,127 GBP

Retailer 1
-
£325 GBP
$435 USD
Price last confirmed 37 days ago
Retailer 2
-
£363 GBP
$487 USD
View
Price last confirmed 37 days ago
Retailer 3
-
£397 GBP
$532 USD
View
Price last confirmed 33 days ago
Retailer 4
-
£545 GBP
View
Price last confirmed 23 days ago
A
Retailer 5
-
£650 GBP
€829 EUR
View
B+
Retailer 6
-
£664 GBP
$890 USD
View
B+
Retailer 7
-
£733 GBP
$982 USD
View
A
Retailer 8
-
£756 GBP
$1,013 USD
View
B+
Retailer 9
-
£785 GBP
View
B+
Retailer 10
-
£876 GBP
$1,174 USD
View
B
Retailer 11
-
£1,220 GBP
$1,634 USD
View
Retailer 12
-
£1,294 GBP
$1,734 USD
View
Price last confirmed 34 days ago
B
Retailer 13
-
£1,983 GBP
View
Most Expensive
B
Brilliant Earth
8695424A · Oct 29
£2,127 GBP
$2,850 USD
View
13 more retailers have this diamond
Prices start from £650 GBPSave up to £1,477 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
3.61ct Round
£650 GBP