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0.65ct E SI1 Round Lab Grown Diamond

EX • E/SI1 • IGI LG643451906

Shape and cutting style on the report: Round brilliant

Certificate IGI LG643451906

Diamond specifications and retailer prices

From £87 GBP
$116 USD
As of October 29, 2026
Save £814 GBP (90%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £900 GBP at MOH London · As of October 26, 2026
View at MOH London

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 LG643451906 or 643451906. Listed at 19 retailers as of October 26, 2026, with prices from £87 to £900, a £814 spread on the same certified stone. MOH London lists it at £900. 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 angle34.5°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG643451906
Dimensions5.56 × 5.52 × 3.34 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
5.56 mm5.52 mm0.65 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG643451906
Side View
Table 63.0%Crown 34.5°Girdle: MED-STKPavilion 40.5°Culet: NoneDepth 60.4%

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: £900 GBP|Low: £84 GBP|High: £910 GBP|Avg: £246 GBP|+0.1%
MOH London
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
October 30, 2026
Retailer 11£87 GBP
Retailer 3£97 GBP
Retailer 6£101 GBP
Retailer 5£115 GBP
Retailer 13£115 GBP
Retailer 10£127 GBP
Retailer 12£151 GBP
Retailer 8£195 GBP
Retailer 7£219 GBP
Retailer 2£239 GBP
Retailer 9£259 GBP
Retailer 14£339 GBP
Retailer 4£346 GBP
MOH London£900 GBP

44 data points across 14 retailers

19 retailers£87 GBP to £900 GBP

A
Cheapest Retailer
-
£87 GBP
$116 USD
A
Retailer 2
-
£97 GBP
$130 USD
View
Final sale: no returns
A
Retailer 3
-
£101 GBP
$135 USD
View
A
Retailer 4
-
£115 GBP
$154 USD
View
A
Retailer 5
-
£115 GBP
$154 USD
View
A
Retailer 6
-
£127 GBP
$170 USD
View
A
Retailer 7
-
£151 GBP
$202 USD
View
A
Retailer 8
-
£195 GBP
€249 EUR
View
B+
Retailer 9
-
£219 GBP
View
B
Retailer 10
-
£239 GBP
$320 USD
View
B+
Retailer 11
-
£259 GBP
$347 USD
View
B+
Retailer 12
-
£295 GBP
View
B+
Retailer 13
-
£304 GBP
SGD 550 SGD
View
B+
Retailer 14
-
£339 GBP
$454 USD
View
B+
Retailer 15
-
£346 GBP
$464 USD
View
Retailer 16
-
£386 GBP
$517 USD
View
Price last confirmed 14 days ago
B
Retailer 17
-
£389 GBP
$521 USD
View
B
Retailer 18
-
£692 GBP
$927 USD
View
Most Expensive
B
MOH London
LG643451906 · Oct 26
£900 GBP
View
18 more retailers have this diamond
Prices start from £87 GBPSave up to £814 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
£87 GBP