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Round|Lab Grown|IGI

1.29ct D VVS1 Round Lab Grown Diamond

ID • D/VVS1 • IGI LG817650137

Shape and cutting style on the report: Round brilliant

Certificate IGI LG817650137

Diamond specifications and retailer prices

From £170 GBP
As of November 3, 2026
Save £785 GBP (82%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: £1,656 GBP at Queensmith · As of October 27, 2026
View at Queensmith

About this 1.29ct lab-grown round diamond

This 1.29ct lab-grown round 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 LG817650137 or 817650137. Listed at 24 retailers as of November 3, 2026, with a 461% 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

1.29
Carat
D
Colour
VVS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.6°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG817650137
Dimensions7.04 × 6.96 × 4.24 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
7.04 mm6.96 mm1.29 ctD / VVS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG817650137
Side View
Table 58.0%Crown 33.6°Girdle: MED-STKPavilion 40.5°Culet: NoneDepth 60.5%

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 3
Current: £390 GBP|Low: £170 GBP|High: £956 GBP|Avg: £470 GBP|+1.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
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Retailer 10
Retailer 11
Retailer 12
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Retailer 18
November 5, 2026
Retailer 5£170 GBP
Retailer 3£191 GBP
Retailer 16£198 GBP
Retailer 17£212 GBP
Retailer 6£285 GBP
Retailer 12£334 GBP
Retailer 18£340 GBP
Retailer 2£364 GBP
Retailer 1£390 GBP
Retailer 8£418 GBP
Retailer 13£520 GBP
Retailer 9£521 GBP
Retailer 15£680 GBP
Retailer 14£682 GBP
Retailer 4£719 GBP
Retailer 10£747 GBP
Retailer 11£844 GBP
Retailer 7£956 GBP

32 data points across 18 retailers

24 retailers£170 GBP to £956 GBP

A
Cheapest Retailer
-
£170 GBP
A
Retailer 2
-
£191 GBP
View
Final sale: no returns
A
Retailer 3
-
£198 GBP
View
A
Retailer 4
-
£212 GBP
View
Retailer 5
-
£213 GBP
View
Price last confirmed 11 days ago
B+
Retailer 6
-
£285 GBP
View
A
Retailer 7
-
£334 GBP
View
A
Retailer 8
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£340 GBP
View
A
Retailer 9
-
£364 GBP
View
A
Retailer 10
-
£390 GBP
View
B+
Retailer 11
-
£398 GBP
View
B+
Retailer 12
-
£418 GBP
View
B+
Retailer 13
-
£449 GBP
View
B+
Retailer 14
-
£520 GBP
View
Retailer 15
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£521 GBP
View
Price last confirmed 9 days ago
B+
Retailer 16
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£563 GBP
View
B
Retailer 17
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£680 GBP
View
B
Retailer 18
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£682 GBP
View
B
Retailer 19
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£719 GBP
View
Retailer 20
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£747 GBP
View
Price last confirmed 11 days ago
Retailer 21
-
£807 GBP
View
Price last confirmed 42 days ago
B+
Retailer 22
-
£844 GBP
View
B
Retailer 23
-
£956 GBP
View
Most Expensive
Queensmith
LG817650137 · Oct 27
£1,656 GBP
View
Price last confirmed 8 days ago
23 more retailers have this diamond
Prices start from £170 GBPSave up to £785 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
1.29ct Round
£170 GBP