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Radiant|Lab Grown|IGI

1.28ct E VS1 Radiant Lab Grown Diamond

VG • E/VS1 • IGI LG628407192

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG628407192

Diamond specifications and retailer prices

From £144 GBP
$193 USD
As of October 30, 2026
Save £1,244 GBP (90%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £1,388 GBP at Do Amore Diamonds · As of October 31, 2026
View at Do Amore Diamonds

About this 1.28ct lab-grown radiant diamond

This 1.28ct lab-grown radiant sits in the one-and-a-quarter to one-and-a-half carat band, graded E colour (colourless) and VS1 clarity (very-slightly-included), with a very-good cut grade and certified by IGI LG628407192 or 628407192. Listed at 12 retailers as of October 30, 2026, with prices from £144 to £1,388, a £1,244 spread on the same certified stone. Do Amore Diamonds lists it at £1,388. 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

1.28
Carat
E
Colour
VS1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle42.8°
Pavilion angle35.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG628407192
Dimensions7.87 × 5.32 × 3.63 mm
L/W Ratio1.48
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
7.87 mm5.32 mm1.28 ctE / VS1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG628407192
Side View
Table 65.0%Crown 42.8°Girdle: MediumPavilion 35.6°Culet: NoneDepth 68.2%

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 30
Current: £1,388 GBP|Low: £137 GBP|High: £1,388 GBP|Avg: £525 GBP
Do Amore Diamonds
Retailer 2
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Retailer 12
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Retailer 18
October 30, 2026
Retailer 15£144 GBP
Retailer 3£162 GBP
Retailer 12£167 GBP
Retailer 2£248 GBP
Retailer 17£313 GBP
Retailer 4£329 GBP
Retailer 8£337 GBP
Retailer 7£384 GBP
Retailer 9£401 GBP
Retailer 11£483 GBP
Retailer 10£495 GBP
Retailer 13£578 GBP
Retailer 16£635 GBP
Retailer 5£739 GBP
Retailer 6£741 GBP
Retailer 14£796 GBP
Retailer 18£978 GBP
Do Amore Diamonds£1,388 GBP

40 data points across 18 retailers

12 retailers£144 GBP to £1,388 GBP

A
Cheapest Retailer
-
£144 GBP
$193 USD
A
Retailer 2
-
£162 GBP
$217 USD
View
Final sale: no returns
A
Retailer 3
-
£167 GBP
$224 USD
View
A
Retailer 4
-
£248 GBP
View
B+
Retailer 5
-
£313 GBP
$419 USD
View
B+
Retailer 6
-
£483 GBP
A$996 AUD
View
B
Retailer 7
-
£578 GBP
$774 USD
View
B
Retailer 8
-
£635 GBP
$851 USD
View
B
Retailer 9
-
£739 GBP
$990 USD
View
B
Retailer 10
-
£796 GBP
View
B
Retailer 11
-
£978 GBP
$1,310 USD
View
Most Expensive
B
Do Amore Diamonds
27-E781DC176 · Oct 31
£1,388 GBP
$1,860 USD
View
11 more retailers have this diamond
Prices start from £144 GBPSave up to £1,244 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
1.28ct Radiant
£144 GBP