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0.28ct E SI1 Round Lab Grown Diamond

ID • E/SI1 • IGI LG648420907

Shape and cutting style on the report: Round brilliant

Certificate IGI LG648420907

Diamond specifications and retailer prices

From £53 GBP
$70 USD
As of October 29, 2026
Save £239 GBP (82%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £291 GBP at B2C Jewels · As of October 29, 2026
View at B2C Jewels

About this 0.28ct lab-grown round diamond

This 0.28ct lab-grown round sits in the sub-half-carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG648420907 or 648420907. Listed at 12 retailers as of October 29, 2026, with prices from £53 to £291, a £239 spread on the same certified stone. B2C Jewels lists it at £291. 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

0.28
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.1°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG648420907
Dimensions4.30 × 4.28 × 2.55 mm
L/W Ratio1.00
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
4.30 mm4.28 mm0.28 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG648420907
Side View
Table 59.0%Crown 34.1°Girdle: THN-MEDPavilion 40.7°Culet: NoneDepth 59.6%

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: £291 GBP|Low: £50 GBP|High: £291 GBP|Avg: £141 GBP|+1.3%
B2C Jewels
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 18, 2026
Retailer 5£53 GBP
Retailer 12£61 GBP
Retailer 10£69 GBP
Retailer 11£69 GBP
Retailer 6£92 GBP
Retailer 2£98 GBP
Retailer 8£132 GBP
Retailer 7£143 GBP
Retailer 3£193 GBP
Retailer 9£210 GBP
Retailer 4£255 GBP
B2C Jewels£291 GBP

12 data points across 12 retailers

12 retailers£53 GBP to £291 GBP

A
Cheapest Retailer
-
£53 GBP
$70 USD
A
Retailer 2
-
£61 GBP
$81 USD
View
A
Retailer 3
-
£69 GBP
$92 USD
View
A
Retailer 4
-
£69 GBP
$92 USD
View
B+
Retailer 5
-
£92 GBP
$122 USD
View
Retailer 6
-
£98 GBP
$130 USD
View
Price last confirmed 11 days ago
B+
Retailer 7
-
£132 GBP
€168 EUR
View
B
Retailer 8
-
£143 GBP
$190 USD
View
B
Retailer 9
-
£193 GBP
SGD 347 SGD
View
B
Retailer 10
-
£210 GBP
$279 USD
View
B
Retailer 11
-
£255 GBP
$340 USD
View
Most Expensive
B
B2C Jewels
31239392 · Oct 29
£291 GBP
$388 USD
View
11 more retailers have this diamond
Prices start from £53 GBPSave up to £239 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
0.28ct Round
£53 GBP