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Round|Lab Grown|IGI

1.36ct E SI1 Round Lab Grown Diamond

ID • E/SI1 • IGI LG660459301

Certificate IGI LG660459301

Diamond specifications and retailer prices

From £687 GBP
$920 USD
As of October 28, 2026
Save £440 GBP (39%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: £1,127 GBP at Jared · As of October 30, 2026
View at Jared

About this 1.36ct lab-grown round diamond

This 1.36ct lab-grown round sits in the one-and-a-quarter to one-and-a-half carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG660459301 or 660459301. Listed at 3 retailers as of October 30, 2026, with prices from £687 to £1,127, a £440 spread on the same certified stone. Jared lists it at £1,127. 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

1.36
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabIGI
CertificateIGI LG660459301
Dimensions7.11 × 7.13 mm
L/W Ratio1.00
Top View
7.11 mm7.13 mm1.36 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG660459301
Side View
Table 56.0%CrownGirdle: MED-STKPavilionCulet: NoneDepth 61.4%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 28
Current: £1,127 GBP|Low: £687 GBP|High: £1,127 GBP|Avg: £883 GBP
Jared
Retailer 2
Retailer 3
April 27, 2026
Retailer 2£687 GBP
Retailer 3£687 GBP
Jared£1,127 GBP

7 data points across 3 retailers

3 retailers£687 GBP to £1,127 GBP

B
Cheapest Retailer
-
£687 GBP
$920 USD
B
Retailer 2
-
£687 GBP
$920 USD
View
Most Expensive
B
Jared
154529111 · Oct 30
£1,127 GBP
$1,510 USD
View
2 more retailers have this diamond
Prices start from £687 GBPSave up to £440 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
1.36ct Round
£687 GBP