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Heart|Lab Grown|IGI

1.00ct J VS1 Heart Lab Grown Diamond

GD • J/VS1 • IGI LG771639660

Shape and cutting style on the report: Heart modified brilliant

Certificate IGI LG771639660

Diamond specifications and retailer prices

From £207 GBP
As of November 6, 2026
Save £822 GBP (80%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £1,029 GBP at MOH London · As of November 1, 2026
View at MOH London

About this 1ct lab-grown heart diamond

This 1ct lab-grown heart sits in the classic one-carat band, graded J colour (near-colourless) and VS1 clarity (very-slightly-included), with a standard cut grade and certified by IGI LG771639660 or 771639660. Listed at 17 retailers as of November 1, 2026, with prices from £207 to £1,029, a £822 spread on the same certified stone. MOH London lists it at £1,029. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.00
Carat
J
Colour
VS1
Clarity
Good
Cut

Specifications

CutGood
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle33.6°
Pavilion angle32°
OriginLab Grown
Grading LabIGI
CertificateIGI LG771639660
Dimensions5.96 × 6.38 × 3.45 mm
L/W Ratio1.07
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
5.96 mm6.38 mm1.00 ctJ / VS1
OriginLab Grown
CutGood
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI LG771639660
Side View
Table 70.0%Crown 33.6°Girdle: THK-VTKPavilion 32°Culet: NoneDepth 54.1%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: £1,029 GBP|Low: £199 GBP|High: £1,239 GBP|Avg: £525 GBP|-16.0%
MOH London
Retailer 2
Retailer 3
Retailer 4
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Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
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Retailer 17
November 6, 2026
Retailer 17£207 GBP
Retailer 16£240 GBP
Retailer 3£257 GBP
Retailer 5£257 GBP
Retailer 14£287 GBP
Retailer 13£374 GBP
Retailer 2£403 GBP
Retailer 10£424 GBP
Retailer 12£433 GBP
Retailer 4£436 GBP
Retailer 11£442 GBP
Retailer 7£542 GBP
Retailer 15£616 GBP
Retailer 8£687 GBP
Retailer 9£826 GBP
Retailer 6£863 GBP
MOH London£1,029 GBP

39 data points across 17 retailers

17 retailers£207 GBP to £1,029 GBP

B+
Cheapest Retailer
-
£207 GBP
B+
Retailer 2
-
£240 GBP
View
Retailer 3
-
£257 GBP
View
Price last confirmed 12 days ago
B+
Retailer 4
-
£257 GBP
View
B+
Retailer 5
-
£287 GBP
View
B
Retailer 6
-
£374 GBP
View
B
Retailer 7
-
£403 GBP
View
B
Retailer 8
-
£424 GBP
View
B
Retailer 9
-
£433 GBP
View
B
Retailer 10
-
£436 GBP
View
B
Retailer 11
-
£442 GBP
View
C
Retailer 12
-
£542 GBP
View
C
Retailer 13
-
£616 GBP
View
C
Retailer 14
-
£687 GBP
View
C
Retailer 15
-
£826 GBP
View
C
Retailer 16
-
£863 GBP
View
Most Expensive
C
MOH London
LG771639660 · Nov 1
£1,029 GBP
View
16 more retailers have this diamond
Prices start from £207 GBPSave up to £822 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.

B+
1.00ct Heart
£207 GBP