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Heart|Lab Grown|IGI

1.02ct F VS1 Heart Lab Grown Diamond

ID • F/VS1 • IGI LG778675376

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG778675376

Diamond specifications and retailer prices

From £141 GBP
As of November 4, 2026
Save £719 GBP (84%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £1,270 GBP at Queensmith · As of October 28, 2026
View at Queensmith

About this 1.02ct lab-grown heart diamond

This 1.02ct lab-grown heart sits in the classic one-carat band, graded F colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG778675376 or 778675376. Listed at 19 retailers as of November 4, 2026, with a 511% 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

1.02
Carat
F
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.6°
Pavilion angle39°
OriginLab Grown
Grading LabIGI
CertificateIGI LG778675376
Dimensions5.85 × 6.99 × 4.18 mm
L/W Ratio1.19
Girdle conditionFaceted
Culet sizePointed
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
5.85 mm6.99 mm1.02 ctF / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG778675376
Side View
Table 61.0%Crown 35.6°Girdle: ThickPavilion 39°Culet: NoneDepth 59.8%

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 4
Current: £313 GBP|Low: £137 GBP|High: £859 GBP|Avg: £374 GBP|-0.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
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Retailer 11
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Retailer 18
November 5, 2026
Retailer 14£141 GBP
Retailer 9£156 GBP
Retailer 16£163 GBP
Retailer 3£174 GBP
Retailer 10£177 GBP
Retailer 12£207 GBP
Retailer 2£236 GBP
Retailer 7£247 GBP
Retailer 17£301 GBP
Retailer 1£313 GBP
Retailer 5£351 GBP
Retailer 15£424 GBP
Retailer 13£450 GBP
Retailer 4£560 GBP
Retailer 6£578 GBP
Retailer 8£600 GBP
Retailer 11£813 GBP
Retailer 18£859 GBP

36 data points across 18 retailers

19 retailers£141 GBP to £859 GBP

A
Cheapest Retailer
-
£141 GBP
A
Retailer 2
-
£156 GBP
View
Final sale: no returns
A
Retailer 3
-
£163 GBP
View
A
Retailer 4
-
£174 GBP
View
Retailer 5
-
£177 GBP
View
Price last confirmed 11 days ago
A
Retailer 6
-
£207 GBP
View
A
Retailer 7
-
£236 GBP
View
A
Retailer 8
-
£247 GBP
View
B+
Retailer 9
-
£301 GBP
View
B+
Retailer 10
-
£313 GBP
View
B+
Retailer 11
-
£351 GBP
View
B+
Retailer 12
-
£424 GBP
View
B
Retailer 13
-
£450 GBP
View
B
Retailer 14
-
£560 GBP
View
B
Retailer 15
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£578 GBP
View
B
Retailer 16
-
£600 GBP
View
B
Retailer 17
-
£813 GBP
View
B
Retailer 18
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£859 GBP
View
Most Expensive
Queensmith
LG778675376 · Oct 28
£1,270 GBP
View
Price last confirmed 7 days ago
18 more retailers have this diamond
Prices start from £141 GBPSave up to £719 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
1.02ct Heart
£141 GBP