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Heart|Lab Grown|IGI

1.25ct D VS1 Heart Lab Grown Diamond

EX • D/VS1 • IGI LG663403026

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG663403026

Diamond specifications and retailer prices

From £164 GBP
As of November 4, 2026
Save £770 GBP (82%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £934 GBP at Reve Diamonds · As of November 4, 2026
View at Reve Diamonds

About this 1.25ct lab-grown heart diamond

This 1.25ct lab-grown heart sits in the one-and-a-quarter to one-and-a-half carat band, graded D colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG663403026 or 663403026. Listed at 19 retailers as of November 4, 2026, with prices from £164 to £934, a £770 spread on the same certified stone. Reve Diamonds lists it at £934. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.25
Carat
D
Colour
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle31.9°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG663403026
Dimensions6.51 × 7.71 × 4.46 mm
L/W Ratio1.18
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.51 mm7.71 mm1.25 ctD / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG663403026
Side View
Table 58.0%Crown 31.9°Girdle: MED-STKPavilion 40.3°Culet: NoneDepth 57.8%

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: £374 GBP|Low: £164 GBP|High: £944 GBP|Avg: £453 GBP|+16.4%
Retailer 1
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Reve Diamonds
November 5, 2026
Retailer 12£164 GBP
Retailer 14£182 GBP
Retailer 18£190 GBP
Retailer 6£207 GBP
Retailer 7£207 GBP
Retailer 11£270 GBP
Retailer 17£347 GBP
Retailer 3£357 GBP
Retailer 9£370 GBP
Retailer 1£374 GBP
Retailer 8£442 GBP
Retailer 2£506 GBP
Retailer 5£563 GBP
Retailer 10£593 GBP
Retailer 13£653 GBP
Retailer 16£656 GBP
Retailer 15£692 GBP
Retailer 4£830 GBP
Reve Diamonds£934 GBP

37 data points across 19 retailers

19 retailers£164 GBP to £934 GBP

A
Cheapest Retailer
-
£164 GBP
A
Retailer 2
-
£182 GBP
View
Final sale: no returns
A
Retailer 3
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£190 GBP
View
A
Retailer 4
-
£207 GBP
View
Retailer 5
-
£207 GBP
View
Price last confirmed 11 days ago
A
Retailer 6
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£270 GBP
View
B+
Retailer 7
-
£347 GBP
View
B+
Retailer 8
-
£357 GBP
View
B+
Retailer 9
-
£370 GBP
View
B+
Retailer 10
-
£374 GBP
View
B+
Retailer 11
-
£442 GBP
View
B+
Retailer 12
-
£506 GBP
View
B
Retailer 13
-
£563 GBP
View
B
Retailer 14
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£593 GBP
View
B
Retailer 15
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£653 GBP
View
B
Retailer 16
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£656 GBP
View
B
Retailer 17
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£692 GBP
View
B
Retailer 18
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£830 GBP
View
Most Expensive
B
Reve Diamonds
C7906BC17 · Nov 4
£934 GBP
$1,261 USD
View
18 more retailers have this diamond
Prices start from £164 GBPSave up to £770 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
1.25ct Heart
£164 GBP