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0.65ct E SI1 Round Lab Grown Diamond

ID • E/SI1 • IGI LG361985486

Shape and cutting style on the report: Round brilliant

Certificate IGI LG361985486

Diamond specifications and retailer prices

From £218 GBP
€278 EUR
As of October 29, 2026
Save £148 GBP (40%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: £366 GBP at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 0.65ct lab-grown round diamond

This 0.65ct lab-grown round sits in the half to three-quarter carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG361985486 or 361985486. Listed at 3 retailers as of October 29, 2026, with prices from £218 to £366, a £148 spread on the same certified stone. Brilliant Earth lists it at £366. 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

0.65
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.7°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG361985486
Dimensions5.61 × 5.59 × 3.41 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
This laboratory grown diamond is classified as Type II
Top View
5.61 mm5.59 mm0.65 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG361985486
Side View
Table 58.0%Crown 33.7°GirdlePavilion 41°Culet: NoneDepth 60.9%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 29
Current: £366 GBP|Low: £172 GBP|High: £366 GBP|Avg: £249 GBP|+2.1%
Brilliant Earth
Retailer 2
Retailer 3
October 25, 2026
Retailer 3£172 GBP
Retailer 2£218 GBP
Brilliant Earth£366 GBP

8 data points across 3 retailers

3 retailers£218 GBP to £366 GBP

Retailer 1
-
£172 GBP
$230 USD
Price last confirmed 21 days ago
A
Retailer 2
-
£218 GBP
€278 EUR
View
Most Expensive
B
Brilliant Earth
16335311A · Oct 29
£366 GBP
$490 USD
View
2 more retailers have this diamond
Prices start from £218 GBPSave up to £148 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
0.65ct Round
£218 GBP