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Cushion|Lab Grown|IGI

1.28ct D VVS1 Cushion Lab Grown Diamond

VG • D/VVS1 • IGI LG830658262

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG830658262

Diamond specifications and retailer prices

From £164 GBP
As of November 4, 2026
Save £857 GBP (84%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £1,021 GBP at Michael Trio · As of November 4, 2026
View at Michael Trio

About this 1.28ct lab-grown cushion diamond

This 1.28ct lab-grown cushion 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 very-good cut grade and certified by IGI LG830658262 or 830658262. Listed at 16 retailers as of November 4, 2026, with prices from £164 to £1,021, a £857 spread on the same certified stone. Michael Trio lists it at £1,021. 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
D
Colour
VVS1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle41.4°
Pavilion angle34.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG830658262
Dimensions7.96 × 5.50 × 3.51 mm
L/W Ratio1.45
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.96 mm5.50 mm1.28 ctD / VVS1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG830658262
Side View
Table 67.0%Crown 41.4°Girdle: MED-STKPavilion 34.1°Culet: NoneDepth 63.8%

Caratlytics Score

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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: £1,021 GBP|Low: £164 GBP|High: £1,034 GBP|Avg: £456 GBP|-1.3%
Michael Trio
Retailer 2
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Retailer 5
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Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
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Retailer 15
November 5, 2026
Retailer 9£164 GBP
Retailer 7£184 GBP
Retailer 8£206 GBP
Retailer 10£244 GBP
Retailer 12£296 GBP
Retailer 3£314 GBP
Retailer 11£327 GBP
Retailer 5£421 GBP
Retailer 15£443 GBP
Retailer 4£472 GBP
Retailer 13£613 GBP
Retailer 14£621 GBP
Retailer 6£759 GBP
Retailer 2£844 GBP
Michael Trio£1,021 GBP

21 data points across 15 retailers

16 retailers£164 GBP to £1,021 GBP

A
Cheapest Retailer
-
£164 GBP
Final sale: no returns
Retailer 2
-
£184 GBP
View
Price last confirmed 11 days ago
A
Retailer 3
-
£206 GBP
View
B+
Retailer 4
-
£244 GBP
View
A
Retailer 5
-
£296 GBP
View
A
Retailer 6
-
£314 GBP
View
A
Retailer 7
-
£327 GBP
View
A
Retailer 8
-
£421 GBP
View
A
Retailer 9
-
£443 GBP
View
A
Retailer 10
-
£472 GBP
View
B+
Retailer 11
-
£613 GBP
View
B+
Retailer 12
-
£621 GBP
View
Retailer 13
-
£759 GBP
View
Price last confirmed 8 days ago
Retailer 14
-
£779 GBP
View
Price last confirmed 28 days ago
B
Retailer 15
-
£844 GBP
View
Most Expensive
B
Michael Trio
9495156910 · Nov 4
£1,021 GBP
SGD 1,862 SGD
View
15 more retailers have this diamond
Prices start from £164 GBPSave up to £857 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 Cushion
£164 GBP