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Heart|Lab Grown|IGI

1.00ct D FL Heart Lab Grown Diamond

VG • D/FL • IGI LG836612942

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG836612942

Diamond specifications and retailer prices

From £303 GBP
$407 USD
As of November 2, 2026
Save £1,658 GBP (85%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £1,961 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 FL clarity (flawless or internally-flawless), with a very-good cut grade and certified by IGI LG836612942 or 836612942. Listed at 19 retailers as of November 2, 2026, with prices from £303 to £1,961, a £1,658 spread on the same certified stone. Brilliant Earth lists it at £1,961. 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
D
Colour
FL
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.4°
Pavilion angle38.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG836612942
Dimensions6.39 × 6.99 × 3.92 mm
L/W Ratio1.09
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
6.39 mm6.99 mm1.00 ctD / FL
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG836612942
Side View
Table 55.0%Crown 34.4°Girdle: MED-STKPavilion 38.1°Culet: NoneDepth 56.1%

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 2
Current: £1,961 GBP|Low: £303 GBP|High: £1,961 GBP|Avg: £773 GBP
Brilliant Earth
Retailer 2
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Retailer 19
November 3, 2026
Retailer 9£303 GBP
Retailer 5£339 GBP
Retailer 6£340 GBP
Retailer 18£377 GBP
Retailer 12£387 GBP
Retailer 16£421 GBP
Retailer 8£456 GBP
Retailer 4£529 GBP
Retailer 19£597 GBP
Retailer 15£600 GBP
Retailer 2£613 GBP
Retailer 13£649 GBP
Retailer 10£867 GBP
Retailer 17£896 GBP
Retailer 3£1,210 GBP
Retailer 11£1,236 GBP
Retailer 7£1,383 GBP
Retailer 14£1,471 GBP
Brilliant Earth£1,961 GBP

9 data points across 19 retailers

19 retailers£303 GBP to £1,961 GBP

A
Cheapest Retailer
-
£303 GBP
$407 USD
A
Retailer 2
-
£339 GBP
$455 USD
View
Final sale: no returns
A
Retailer 3
-
£340 GBP
$456 USD
View
B+
Retailer 4
-
£377 GBP
$505 USD
View
A
Retailer 5
-
£387 GBP
View
B+
Retailer 6
-
£421 GBP
$565 USD
View
B+
Retailer 7
-
£456 GBP
$612 USD
View
B+
Retailer 8
-
£529 GBP
$710 USD
View
B+
Retailer 9
-
£597 GBP
$801 USD
View
B+
Retailer 10
-
£600 GBP
€766 EUR
View
B+
Retailer 11
-
£613 GBP
View
B
Retailer 12
-
£649 GBP
ZAR 14,062 ZAR
View
B
Retailer 13
-
£867 GBP
$1,163 USD
View
B
Retailer 14
-
£896 GBP
$1,201 USD
View
B
Retailer 15
-
£1,210 GBP
$1,623 USD
View
B
Retailer 16
-
£1,236 GBP
$1,658 USD
View
B
Retailer 17
-
£1,383 GBP
$1,854 USD
View
B
Retailer 18
-
£1,471 GBP
View
Most Expensive
B
Brilliant Earth
22318786A · Nov 2
£1,961 GBP
$2,630 USD
View
18 more retailers have this diamond
Prices start from £303 GBPSave up to £1,658 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
£303 GBP