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Heart|Lab Grown|IGI

1.00ct D IF Heart Lab Grown Diamond

ID • D/IF • IGI LG838619284

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG838619284

Diamond specifications and retailer prices

From £161 GBP
As of November 4, 2026
Save £883 GBP (85%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £1,044 GBP at Brilliant Earth · As of November 2, 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 LG838619284 or 838619284. Listed at 18 retailers as of November 2, 2026, with prices from £161 to £1,044, a £883 spread on the same certified stone. Brilliant Earth lists it at £1,044. 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 angle35.1°
Pavilion angle39.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG838619284
Dimensions6.20 × 6.81 × 4.10 mm
L/W Ratio1.10
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
6.20 mm6.81 mm1.00 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG838619284
Side View
Table 59.0%Crown 35.1°Girdle: STK-THKPavilion 39.4°Culet: NoneDepth 60.2%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 4
Current: £1,044 GBP|Low: £161 GBP|High: £1,044 GBP|Avg: £404 GBP
Brilliant Earth
Retailer 2
Retailer 3
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Retailer 12
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Retailer 18
November 5, 2026
Retailer 9£161 GBP
Retailer 7£181 GBP
Retailer 16£187 GBP
Retailer 18£201 GBP
Retailer 12£206 GBP
Retailer 10£217 GBP
Retailer 6£227 GBP
Retailer 13£344 GBP
Retailer 17£346 GBP
Retailer 5£359 GBP
Retailer 2£368 GBP
Retailer 4£373 GBP
Retailer 14£490 GBP
Retailer 8£541 GBP
Retailer 3£644 GBP
Retailer 15£647 GBP
Retailer 11£801 GBP
Brilliant Earth£1,044 GBP

23 data points across 18 retailers

18 retailers£161 GBP to £1,044 GBP

A
Cheapest Retailer
-
£161 GBP
A
Retailer 2
-
£181 GBP
View
Final sale: no returns
A
Retailer 3
-
£187 GBP
View
A
Retailer 4
-
£201 GBP
View
A
Retailer 5
-
£206 GBP
View
Retailer 6
-
£217 GBP
View
Price last confirmed 11 days ago
A
Retailer 7
-
£227 GBP
View
A
Retailer 8
-
£344 GBP
View
A
Retailer 9
-
£346 GBP
View
A
Retailer 10
-
£359 GBP
View
A
Retailer 11
-
£368 GBP
View
A
Retailer 12
-
£373 GBP
View
B+
Retailer 13
-
£490 GBP
View
B+
Retailer 14
-
£541 GBP
View
B+
Retailer 15
-
£644 GBP
View
B+
Retailer 16
-
£647 GBP
View
B+
Retailer 17
-
£801 GBP
View
Most Expensive
B
Brilliant Earth
21621117A · Nov 2
£1,044 GBP
$1,410 USD
View
17 more retailers have this diamond
Prices start from £161 GBPSave up to £883 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
£161 GBP