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Heart|Lab Grown|IGI

1.00ct D IF Heart Lab Grown Diamond

VG • D/IF • IGI LG835670073

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG835670073

Diamond specifications and retailer prices

From £170 GBP
As of November 4, 2026
Save £875 GBP (84%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £1,044 GBP at Brilliant Earth · As of November 4, 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 very-good cut grade and certified by IGI LG835670073 or 835670073. Listed at 18 retailers as of November 4, 2026, with prices from £170 to £1,044, a £875 spread on the same certified stone. Brilliant Earth lists it at £1,044. 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
IF
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.2°
Pavilion angle37.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG835670073
Dimensions6.22 × 7.01 × 3.99 mm
L/W Ratio1.13
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
6.22 mm7.01 mm1.00 ctD / IF
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG835670073
Side View
Table 56.0%Crown 37.2°Girdle: MED-STKPavilion 37.7°Culet: NoneDepth 56.9%

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: £170 GBP|High: £1,222 GBP|Avg: £486 GBP|-14.5%
Brilliant Earth
Retailer 2
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Retailer 18
November 5, 2026
Retailer 15£170 GBP
Retailer 11£190 GBP
Retailer 7£204 GBP
Retailer 2£210 GBP
Retailer 14£216 GBP
Retailer 6£307 GBP
Retailer 3£376 GBP
Retailer 12£389 GBP
Retailer 9£410 GBP
Retailer 5£444 GBP
Retailer 10£475 GBP
Retailer 18£533 GBP
Retailer 4£569 GBP
Retailer 16£676 GBP
Retailer 17£714 GBP
Retailer 13£840 GBP
Retailer 8£972 GBP
Brilliant Earth£1,044 GBP

11 data points across 18 retailers

18 retailers£170 GBP to £1,044 GBP

A
Cheapest Retailer
-
£170 GBP
A
Retailer 2
-
£190 GBP
View
Final sale: no returns
A
Retailer 3
-
£204 GBP
View
A
Retailer 4
-
£210 GBP
View
A
Retailer 5
-
£216 GBP
View
A
Retailer 6
-
£307 GBP
View
B+
Retailer 7
-
£376 GBP
View
A
Retailer 8
-
£389 GBP
View
B+
Retailer 9
-
£410 GBP
View
B+
Retailer 10
-
£444 GBP
View
B+
Retailer 11
-
£475 GBP
View
B+
Retailer 12
-
£533 GBP
View
B+
Retailer 13
-
£569 GBP
View
B
Retailer 14
-
£676 GBP
View
B
Retailer 15
-
£714 GBP
View
B
Retailer 16
-
£840 GBP
View
B
Retailer 17
-
£972 GBP
View
Most Expensive
B
Brilliant Earth
22318521A · Nov 4
£1,044 GBP
$1,410 USD
View
17 more retailers have this diamond
Prices start from £170 GBPSave up to £875 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
£170 GBP