CaratHunter
Plans
Radiant|Lab Grown|IGI

1.28ct F VS1 Radiant Lab Grown Diamond

ID • F/VS1 • IGI LG621476649

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

Certificate IGI LG621476649

Diamond specifications and retailer prices

From £149 GBP
$199 USD
As of November 2, 2026
Save £1,277 GBP (90%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £1,425 GBP at Do Amore Diamonds · As of November 2, 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 top-tier cut grade and certified by IGI LG621476649 or 621476649. Listed at 16 retailers as of November 2, 2026, with prices from £149 to £1,425, a £1,277 spread on the same certified stone. Do Amore Diamonds lists it at £1,425. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.28
Carat
F
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle41.1°
Pavilion angle35.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG621476649
Dimensions7.68 × 5.37 × 3.62 mm
L/W Ratio1.43
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
7.68 mm5.37 mm1.28 ctF / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG621476649
Side View
Table 66.0%Crown 41.1°Girdle: MediumPavilion 35.4°Culet: NoneDepth 67.4%

Caratlytics Score

How it works →
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: Nov 2
Current: £378 GBP|Low: £119 GBP|High: £825 GBP|Avg: £438 GBP|+4.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
November 2, 2026
Retailer 10£149 GBP
Retailer 2£166 GBP
Retailer 14£172 GBP
Retailer 3£184 GBP
Retailer 11£184 GBP
Retailer 13£319 GBP
Retailer 1£378 GBP
Retailer 4£425 GBP
Retailer 8£497 GBP
Retailer 9£594 GBP
Retailer 12£654 GBP
Retailer 6£782 GBP
Retailer 5£813 GBP
Retailer 7£815 GBP

43 data points across 14 retailers

16 retailers£149 GBP to £1,425 GBP

A
Cheapest Retailer
-
£149 GBP
$199 USD
A
Retailer 2
-
£166 GBP
$223 USD
View
Final sale: no returns
A
Retailer 3
-
£172 GBP
$231 USD
View
A
Retailer 4
-
£184 GBP
$247 USD
View
Retailer 5
-
£184 GBP
$247 USD
View
Price last confirmed 8 days ago
A
Retailer 6
-
£281 GBP
$376 USD
View
A
Retailer 7
-
£319 GBP
$428 USD
View
B+
Retailer 8
-
£378 GBP
View
B+
Retailer 9
-
£425 GBP
$569 USD
View
B+
Retailer 10
-
£497 GBP
A$1,024 AUD
View
B
Retailer 11
-
£594 GBP
$796 USD
View
B
Retailer 12
-
£654 GBP
$876 USD
View
B
Retailer 13
-
£782 GBP
$1,048 USD
View
B
Retailer 14
-
£815 GBP
View
B
Retailer 15
-
£1,070 GBP
View
Most Expensive
B
Do Amore Diamonds
27-DBB8C2295 · Nov 2
£1,425 GBP
$1,910 USD
View
15 more retailers have this diamond
Prices start from £149 GBPSave up to £1,277 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
£149 GBP