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Radiant|Lab Grown|IGI

1.28ct D VVS1 Radiant Lab Grown Diamond

EX • D/VVS1 • IGI LG805626650

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

Certificate IGI LG805626650

Diamond specifications and retailer prices

From £188 GBP
As of November 4, 2026
Save £1,432 GBP (88%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: £1,620 GBP at Do Amore Diamonds · As of November 4, 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 D colour (colourless) and VVS1 clarity (very-very-slightly-included), with a top-tier cut grade and certified by IGI LG805626650 or 805626650. Listed at 21 retailers as of November 4, 2026, with prices from £188 to £1,620, a £1,432 spread on the same certified stone. Do Amore Diamonds lists it at £1,620. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.28
Carat
D
Colour
VVS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle29.5°
Pavilion angle34.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG805626650
Dimensions7.76 × 5.46 × 3.61 mm
L/W Ratio1.42
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.76 mm5.46 mm1.28 ctD / VVS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG805626650
Side View
Table 63.0%Crown 29.5°Girdle: MediumPavilion 34.4°Culet: NoneDepth 66.1%

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: Nov 4
Current: £435 GBP|Low: £188 GBP|High: £1,508 GBP|Avg: £597 GBP|+3.7%
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
November 5, 2026
Retailer 4£188 GBP
Retailer 13£280 GBP
Retailer 9£397 GBP
Retailer 1£435 GBP
Retailer 3£446 GBP
Retailer 5£481 GBP
Retailer 7£564 GBP
Retailer 12£674 GBP
Retailer 11£802 GBP
Retailer 10£868 GBP
Retailer 8£911 GBP
Retailer 6£921 GBP
Retailer 2£1,464 GBP

44 data points across 13 retailers

21 retailers£188 GBP to £1,620 GBP

Retailer 1
-
£169 GBP
Price last confirmed 20 days ago
A
Retailer 2
-
£188 GBP
View
Final sale: no returns
Retailer 3
-
£195 GBP
View
Price last confirmed 23 days ago
Retailer 4
-
£209 GBP
View
Price last confirmed 21 days ago
Retailer 5
-
£209 GBP
View
Price last confirmed 34 days ago
B+
Retailer 6
-
£280 GBP
View
A
Retailer 7
-
£376 GBP
View
A
Retailer 8
-
£397 GBP
View
B+
Retailer 9
-
£435 GBP
View
B+
Retailer 10
-
£446 GBP
View
B+
Retailer 11
-
£481 GBP
View
B+
Retailer 12
-
£564 GBP
View
B+
Retailer 13
-
£674 GBP
View
Retailer 14
-
£741 GBP
View
Price last confirmed 21 days ago
Retailer 15
-
£802 GBP
View
Price last confirmed 19 days ago
B
Retailer 16
-
£868 GBP
View
B
Retailer 17
-
£868 GBP
View
B
Retailer 18
-
£911 GBP
View
B
Retailer 19
-
£921 GBP
View
B
Retailer 20
-
£949 GBP
View
Most Expensive
B
Do Amore Diamonds
27-0CFF8A523 · Nov 4
£1,620 GBP
$2,180 USD
View
20 more retailers have this diamond
Prices start from £188 GBPSave up to £1,432 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
£188 GBP