CaratHunter
Plans
Round|Lab Grown|IGI

0.65ct E SI1 Round Lab Grown Diamond

EX • E/SI1 • IGI LG361990018

Shape and cutting style on the report: Round brilliant

Certificate IGI LG361990018

Diamond specifications and retailer prices

From £218 GBP
€278 EUR
As of October 29, 2026
3 retailers carry this diamond
Most expensive: £366 GBP at Brilliant Earth · As of October 16, 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 LG361990018 or 361990018. Listed at 3 retailers as of October 29, 2026. 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
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.2°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG361990018
Dimensions5.66 × 5.63 × 3.36 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This laboratory grown diamond is classified as Type II
Top View
5.66 mm5.63 mm0.65 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG361990018
Side View
Table 57.0%Crown 32.2°GirdlePavilion 40.5°Culet: NoneDepth 59.5%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: £366 GBP|Low: £172 GBP|High: £373 GBP|Avg: £253 GBP|-2.0%
Brilliant Earth
Retailer 2
Retailer 3
October 25, 2026
Retailer 3£172 GBP
Retailer 2£218 GBP
Brilliant Earth£366 GBP

7 data points across 3 retailers

3 retailers

Retailer 1
-
£172 GBP
$230 USD
Price last confirmed 21 days ago
B+
Retailer 2
-
£218 GBP
€278 EUR
View
Most Expensive
Brilliant Earth
16335818A · Oct 16
£366 GBP
$490 USD
View
Price last confirmed 14 days ago
2 more retailers have this diamond
Prices start from £218 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.

B+
0.65ct Round
£218 GBP