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Round|Lab Grown|IGI

1.28ct D VVS2 Round Lab Grown Diamond

ID • D/VVS2 • IGI LG794629570

Shape and cutting style on the report: Round brilliant

Certificate IGI LG794629570

Diamond specifications and retailer prices

From £140 GBP
As of November 5, 2026
Save £751 GBP (84%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: £1,623 GBP at Queensmith · As of October 27, 2026
View at Queensmith

About this 1.28ct lab-grown round diamond

This 1.28ct lab-grown round sits in the one-and-a-quarter to one-and-a-half carat band, graded D colour (colourless) and VVS2 clarity (very-very-slightly-included), with a top-tier cut grade and certified by IGI LG794629570 or 794629570. Listed at 23 retailers as of November 4, 2026, with a 538% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
VVS2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.2°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG794629570
Dimensions6.95 × 6.99 × 4.23 mm
L/W Ratio1.01
Girdle conditionFaceted
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
6.95 mm6.99 mm1.28 ctD / VVS2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG794629570
Side View
Table 60.0%Crown 35.2°Girdle: MediumPavilion 40.5°Culet: NoneDepth 60.7%

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 5
Current: £558 GBP|Low: £140 GBP|High: £880 GBP|Avg: £375 GBP|-6.7%
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
Retailer 14
Retailer 15
November 5, 2026
Retailer 8£140 GBP
Retailer 9£163 GBP
Retailer 2£167 GBP
Retailer 4£186 GBP
Retailer 5£186 GBP
Retailer 7£251 GBP
Retailer 3£307 GBP
Retailer 14£321 GBP
Retailer 10£337 GBP
Retailer 13£341 GBP
Retailer 12£453 GBP
Retailer 1£558 GBP
Retailer 11£600 GBP
Retailer 6£728 GBP
Retailer 15£869 GBP

39 data points across 15 retailers

23 retailers£140 GBP to £891 GBP

A
Cheapest Retailer
-
£140 GBP
A
Retailer 2
-
£163 GBP
View
A
Retailer 3
-
£167 GBP
View
Final sale: no returns
A
Retailer 4
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£186 GBP
View
Retailer 5
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£186 GBP
View
Price last confirmed 11 days ago
A
Retailer 6
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£209 GBP
View
B+
Retailer 7
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£251 GBP
View
A
Retailer 8
-
£321 GBP
View
A
Retailer 9
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£337 GBP
View
A
Retailer 10
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£341 GBP
View
A
Retailer 11
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£344 GBP
View
A
Retailer 12
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£370 GBP
View
B+
Retailer 13
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£453 GBP
View
B+
Retailer 14
-
£485 GBP
View
B+
Retailer 15
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£558 GBP
View
B+
Retailer 16
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£600 GBP
View
B+
Retailer 17
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£605 GBP
View
B
Retailer 18
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£632 GBP
View
B
Retailer 19
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£637 GBP
View
B
Retailer 20
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£728 GBP
View
B
Retailer 21
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£869 GBP
View
B
Retailer 22
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£891 GBP
View
Most Expensive
Queensmith
LG794629570 · Oct 27
£1,623 GBP
View
Price last confirmed 8 days ago
22 more retailers have this diamond
Prices start from £140 GBPSave up to £751 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 Round
£140 GBP