Cushion|Lab Grown|IGI

0.28ct F SI1 Cushion Lab Grown Diamond

VG • F/SI1 • IGI LG841616345

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG841616345

Diamond specifications and retailer prices

From £89 GBP
$120 USD
As of November 1, 2026
Save £165 GBP (65%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: £254 GBP at Taylor and Hart · As of October 31, 2026
View at Taylor and Hart

About this 0.28ct lab-grown cushion diamond

This 0.28ct lab-grown cushion sits in the sub-half-carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG841616345 or 841616345. Listed at 5 retailers as of October 31, 2026, with prices from £89 to £254, a £165 spread on the same certified stone. Taylor and Hart lists it at £254. 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

0.28
Carat
F
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle35.4°
Pavilion angle37.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG841616345
Dimensions3.99 × 3.58 × 2.53 mm
L/W Ratio1.11
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
3.99 mm3.58 mm0.28 ctF / SI1
OriginLab Grown
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI LG841616345
Side View
Table 67.0%Crown 35.4°Girdle: MED-THKPavilion 37.9°Culet: NoneDepth 70.7%

Caratlytics Score

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

Price History

Last verified: Nov 1
Current: £132 GBP|Low: £89 GBP|High: £254 GBP|Avg: £162 GBP|-1.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Taylor and Hart
October 31, 2026
Retailer 4£89 GBP
Retailer 2£97 GBP
Retailer 1£132 GBP
Retailer 3£233 GBP
Taylor and Hart£254 GBP

10 data points across 5 retailers

5 retailers£89 GBP to £254 GBP

B+
Cheapest Retailer
-
£89 GBP
$120 USD
B+
Retailer 2
-
£97 GBP
$130 USD
View
B+
Retailer 3
-
£132 GBP
€169 EUR
View
B
Retailer 4
-
£233 GBP
$313 USD
View
Most Expensive
B
Taylor and Hart
N5CP8EF · Oct 31
£254 GBP
$341 USD
View
4 more retailers have this diamond
Prices start from £89 GBPSave up to £165 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+
0.28ct Cushion
£89 GBP