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0.27ct E SI1 Round Lab Grown Diamond

VG • E/SI1 • IGI LG337844711

Shape and cutting style on the report: Round brilliant

Certificate IGI LG337844711

Diamond specifications and retailer prices

From £135 GBP
€171 EUR
As of October 29, 2026
Save £23 GBP (14%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: £158 GBP at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 0.27ct lab-grown round diamond

This 0.27ct lab-grown round sits in the sub-half-carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG337844711 or 337844711. Listed at 2 retailers as of October 29, 2026, with prices from £135 to £158, a £23 spread on the same certified stone. Brilliant Earth lists it at £158. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

0.27
Carat
E
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryGood
FluorescenceNone
Crown angle35.9°
Pavilion angle41.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG337844711
Dimensions4.21 × 4.18 × 2.57 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This laboratory grown diamond is classified as Type II
Top View
4.21 mm4.18 mm0.27 ctE / SI1
OriginLab Grown
CutVery Good
PolishVery Good
SymmetryGood
FluorescenceNone
CertificateIGI LG337844711
Side View
Table 60.5%Crown 35.9°Girdle: MediumPavilion 41.2°Culet: NoneDepth 61.2%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Oct 29
Current: £135 GBP|Low: £94 GBP|High: £135 GBP|Avg: £114 GBP|+2.4%
Retailer 1
Retailer 2
October 25, 2026
Retailer 2£94 GBP
Retailer 1£135 GBP

9 data points across 2 retailers

2 retailers£135 GBP to £158 GBP

B
Cheapest Retailer
-
£135 GBP
€171 EUR
Most Expensive
B
Brilliant Earth
21184527A · Oct 29
£158 GBP
$210 USD
View
1 more retailer has this diamond
Prices start from £135 GBPSave up to £23 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
0.27ct Round
£135 GBP