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Radiant|Lab Grown|IGI

1.28ct F VS1 Radiant Lab Grown Diamond

VG • F/VS1 • IGI LG614334894

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

Certificate IGI LG614334894

Diamond specifications and retailer prices

From £138 GBP
$185 USD
As of October 30, 2026
Save £1,183 GBP (90%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £1,321 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 F colour (colourless) and VS1 clarity (very-slightly-included), with a very-good cut grade and certified by IGI LG614334894 or 614334894. Listed at 11 retailers as of October 30, 2026, with prices from £138 to £1,321, a £1,183 spread on the same certified stone. Do Amore Diamonds lists it at £1,321. 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
F
Colour
VS1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle45°
Pavilion angle34.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG614334894
Dimensions7.55 × 5.34 × 3.65 mm
L/W Ratio1.41
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
7.55 mm5.34 mm1.28 ctF / VS1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG614334894
Side View
Table 61.0%Crown 45°Girdle: THN-MEDPavilion 34.5°Culet: NoneDepth 68.4%

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: £1,321 GBP|Low: £130 GBP|High: £1,321 GBP|Avg: £531 GBP|+1.7%
Do Amore Diamonds
Retailer 2
Retailer 3
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Retailer 7
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Retailer 12
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Retailer 18
November 1, 2026
Retailer 14£138 GBP
Retailer 18£152 GBP
Retailer 12£160 GBP
Retailer 16£302 GBP
Retailer 3£310 GBP
Retailer 8£329 GBP
Retailer 5£375 GBP
Retailer 7£397 GBP
Retailer 11£461 GBP
Retailer 10£501 GBP
Retailer 9£523 GBP
Retailer 13£581 GBP
Retailer 15£607 GBP
Retailer 6£707 GBP
Retailer 4£724 GBP
Retailer 2£882 GBP
Retailer 17£978 GBP
Do Amore Diamonds£1,321 GBP

19 data points across 18 retailers

11 retailers£138 GBP to £1,321 GBP

A
Cheapest Retailer
-
£138 GBP
$185 USD
A
Retailer 2
-
£152 GBP
$203 USD
View
Final sale: no returns
A
Retailer 3
-
£160 GBP
$214 USD
View
A
Retailer 4
-
£302 GBP
$404 USD
View
B+
Retailer 5
-
£461 GBP
A$951 AUD
View
B
Retailer 6
-
£581 GBP
$778 USD
View
B
Retailer 7
-
£607 GBP
$813 USD
View
B
Retailer 8
-
£724 GBP
$970 USD
View
B
Retailer 9
-
£882 GBP
View
B
Retailer 10
-
£978 GBP
$1,310 USD
View
Most Expensive
B
Do Amore Diamonds
27-B98A4F402 · Oct 31
£1,321 GBP
$1,770 USD
View
10 more retailers have this diamond
Prices start from £138 GBPSave up to £1,183 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
£138 GBP