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Heart|Lab Grown|IGI

1.29ct D VVS1 Heart Lab Grown Diamond

ID • D/VVS1 • IGI LG840624138

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG840624138

Diamond specifications and retailer prices

From £164 GBP
As of November 4, 2026
Save £962 GBP (85%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £1,126 GBP at Brilliant Earth · As of November 4, 2026
View at Brilliant Earth

About this 1.29ct lab-grown heart diamond

This 1.29ct lab-grown heart 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 LG840624138 or 840624138. Listed at 15 retailers as of November 4, 2026, with prices from £164 to £1,126, a £962 spread on the same certified stone. Brilliant Earth lists it at £1,126. 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 angle36.2°
Pavilion angle38.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG840624138
Dimensions6.57 × 7.55 × 4.37 mm
L/W Ratio1.15
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
6.57 mm7.55 mm1.29 ctD / VVS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG840624138
Side View
Table 58.0%Crown 36.2°Girdle: MED-THKPavilion 38.3°Culet: NoneDepth 57.9%

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: £1,126 GBP|Low: £164 GBP|High: £1,126 GBP|Avg: £476 GBP
Brilliant Earth
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 9£164 GBP
Retailer 4£184 GBP
Retailer 12£190 GBP
Retailer 3£203 GBP
Retailer 8£231 GBP
Retailer 13£335 GBP
Retailer 11£347 GBP
Retailer 2£374 GBP
Retailer 14£484 GBP
Retailer 10£653 GBP
Retailer 15£656 GBP
Retailer 6£659 GBP
Retailer 5£692 GBP
Retailer 7£698 GBP
Brilliant Earth£1,126 GBP

4 data points across 15 retailers

15 retailers£164 GBP to £1,126 GBP

A
Cheapest Retailer
-
£164 GBP
A
Retailer 2
-
£184 GBP
View
Final sale: no returns
A
Retailer 3
-
£190 GBP
View
A
Retailer 4
-
£203 GBP
View
A
Retailer 5
-
£231 GBP
View
A
Retailer 6
-
£335 GBP
View
A
Retailer 7
-
£347 GBP
View
A
Retailer 8
-
£374 GBP
View
B+
Retailer 9
-
£484 GBP
View
B
Retailer 10
-
£653 GBP
View
B
Retailer 11
-
£656 GBP
View
B
Retailer 12
-
£659 GBP
View
B
Retailer 13
-
£692 GBP
View
B
Retailer 14
-
£698 GBP
View
Most Expensive
B
Brilliant Earth
22439067A · Nov 4
£1,126 GBP
$1,520 USD
View
14 more retailers have this diamond
Prices start from £164 GBPSave up to £962 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 Heart
£164 GBP