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Radiant|Lab Grown|IGI

1.28ct E VS1 Radiant Lab Grown Diamond

EX • E/VS1 • IGI LG751511563

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

Certificate IGI LG751511563

Diamond specifications and retailer prices

From £154 GBP
$206 USD
As of October 30, 2026
Save £1,317 GBP (90%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £1,470 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 top-tier cut grade and certified by IGI LG751511563 or 751511563. Listed at 18 retailers as of October 30, 2026, with prices from £154 to £1,470, a £1,317 spread on the same certified stone. Do Amore Diamonds lists it at £1,470. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.28
Carat
E
Colour
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle40.4°
Pavilion angle35.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG751511563
Dimensions7.78 × 5.42 × 3.66 mm
L/W Ratio1.44
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.78 mm5.42 mm1.28 ctE / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG751511563
Side View
Table 66.0%Crown 40.4°Girdle: MediumPavilion 35.6°Culet: NoneDepth 67.5%

Caratlytics Score

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A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: £1,470 GBP|Low: £113 GBP|High: £1,470 GBP|Avg: £518 GBP
Do Amore Diamonds
Retailer 2
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October 31, 2026
Retailer 10£113 GBP
Retailer 20£154 GBP
Retailer 8£172 GBP
Retailer 2£178 GBP
Retailer 3£190 GBP
Retailer 7£190 GBP
Retailer 13£264 GBP
Retailer 4£280 GBP
Retailer 6£328 GBP
Retailer 14£392 GBP
Retailer 5£430 GBP
Retailer 17£485 GBP
Retailer 16£512 GBP
Retailer 18£613 GBP
Retailer 19£675 GBP
Retailer 11£803 GBP
Retailer 15£846 GBP
Retailer 12£904 GBP
Retailer 9£1,008 GBP
Do Amore Diamonds£1,470 GBP

34 data points across 20 retailers

18 retailers£154 GBP to £1,470 GBP

A
Cheapest Retailer
-
£154 GBP
$206 USD
A
Retailer 2
-
£172 GBP
$230 USD
View
Final sale: no returns
A
Retailer 3
-
£178 GBP
$238 USD
View
A
Retailer 4
-
£190 GBP
$255 USD
View
A
Retailer 5
-
£190 GBP
$255 USD
View
A
Retailer 6
-
£264 GBP
View
A
Retailer 7
-
£280 GBP
$375 USD
View
A
Retailer 8
-
£328 GBP
$439 USD
View
B+
Retailer 9
-
£392 GBP
View
B+
Retailer 10
-
£430 GBP
$576 USD
View
Retailer 11
-
£485 GBP
$650 USD
View
Price last confirmed 10 days ago
B+
Retailer 12
-
£512 GBP
A$1,056 AUD
View
B
Retailer 13
-
£613 GBP
$822 USD
View
B
Retailer 14
-
£675 GBP
$904 USD
View
B
Retailer 15
-
£803 GBP
$1,076 USD
View
B
Retailer 16
-
£846 GBP
View
B
Retailer 17
-
£904 GBP
$1,211 USD
View
Most Expensive
B
Do Amore Diamonds
27-4CE0F21A6 · Oct 31
£1,470 GBP
$1,970 USD
View
17 more retailers have this diamond
Prices start from £154 GBPSave up to £1,317 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
£154 GBP