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Heart|Lab Grown|IGI

1.08ct D SI1 Heart Lab Grown Diamond

EX • D/SI1 • IGI LG839604728

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG839604728

Diamond specifications and retailer prices

From £140 GBP
As of November 6, 2026
Save £376 GBP (73%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: £516 GBP at Brilliant Earth · As of November 6, 2026
View at Brilliant Earth

About this 1.08ct lab-grown heart diamond

This 1.08ct lab-grown heart sits in the classic one-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG839604728 or 839604728. Listed at 3 retailers as of November 6, 2026, with prices from £140 to £516, a £376 spread on the same certified stone. Brilliant Earth lists it at £516. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.08
Carat
D
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.2°
Pavilion angle40.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG839604728
Dimensions6.48 × 7.20 × 4.15 mm
L/W Ratio1.11
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.48 mm7.20 mm1.08 ctD / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG839604728
Side View
Table 61.0%Crown 33.2°Girdle: MED-STKPavilion 40.2°Culet: NoneDepth 57.6%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 6
Current: £516 GBP|Low: £140 GBP|High: £814 GBP|Avg: £438 GBP|-36.7%
Brilliant Earth
Retailer 2
Retailer 3
November 6, 2026
Retailer 3£140 GBP
Retailer 2£282 GBP
Brilliant Earth£516 GBP

33 data points across 3 retailers

3 retailers£140 GBP to £516 GBP

A
Cheapest Retailer
-
£140 GBP
Final sale: no returns
B+
Retailer 2
-
£282 GBP
View
Most Expensive
B
Brilliant Earth
21583184A · Nov 6
£516 GBP
$690 USD
View
2 more retailers have this diamond
Prices start from £140 GBPSave up to £376 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
1.08ct Heart
£140 GBP