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Heart|Lab Grown|IGI

1.00ct D IF Heart Lab Grown Diamond

ID • D/IF • IGI LG761554401

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG761554401

Diamond specifications and retailer prices

From £253 GBP
As of November 4, 2026
Save £1,236 GBP (83%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: £1,489 GBP at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 1ct lab-grown heart diamond

This 1ct lab-grown heart sits in the classic one-carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG761554401 or 761554401. Listed at 23 retailers as of October 31, 2026, with prices from £253 to £1,489, a £1,236 spread on the same certified stone. Brilliant Earth lists it at £1,489. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.00
Carat
D
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.3°
Pavilion angle40.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG761554401
Dimensions6.10 × 6.88 × 4.10 mm
L/W Ratio1.13
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.10 mm6.88 mm1.00 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG761554401
Side View
Table 55.0%Crown 35.3°Girdle: MED-THKPavilion 40.1°Culet: NoneDepth 59.6%

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: £1,489 GBP|Low: £243 GBP|High: £1,778 GBP|Avg: £643 GBP|-16.3%
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 14£253 GBP
Retailer 12£283 GBP
Retailer 4£294 GBP
Retailer 5£314 GBP
Retailer 15£314 GBP
Retailer 13£426 GBP
Retailer 7£488 GBP
Retailer 11£541 GBP
Retailer 2£558 GBP
Retailer 9£772 GBP
Retailer 6£836 GBP
Retailer 10£921 GBP
Retailer 3£1,010 GBP
Retailer 8£1,256 GBP
Brilliant Earth£1,489 GBP

45 data points across 15 retailers

23 retailers£253 GBP to £1,489 GBP

A
Cheapest Retailer
-
£253 GBP
A
Retailer 2
-
£283 GBP
View
Final sale: no returns
A
Retailer 3
-
£294 GBP
View
Retailer 4
-
£314 GBP
View
Price last confirmed 11 days ago
A
Retailer 5
-
£314 GBP
View
A
Retailer 6
-
£350 GBP
View
B+
Retailer 7
-
£422 GBP
View
B+
Retailer 8
-
£426 GBP
View
B+
Retailer 9
-
£436 GBP
View
B+
Retailer 10
-
£488 GBP
View
B+
Retailer 11
-
£541 GBP
View
B+
Retailer 12
-
£558 GBP
View
B+
Retailer 13
-
£772 GBP
View
B
Retailer 14
-
£790 GBP
View
B
Retailer 15
-
£836 GBP
View
B
Retailer 16
-
£921 GBP
View
B
Retailer 17
-
£1,010 GBP
View
B
Retailer 18
-
£1,041 GBP
View
B
Retailer 19
-
£1,137 GBP
View
B
Retailer 20
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£1,219 GBP
View
B
Retailer 21
-
£1,256 GBP
View
Retailer 22
-
£1,279 GBP
View
Price last confirmed 9 days ago
Most Expensive
B
Brilliant Earth
18451958A · Oct 31
£1,489 GBP
$2,010 USD
View
22 more retailers have this diamond
Prices start from £253 GBPSave up to £1,236 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
1.00ct Heart
£253 GBP