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Heart|Lab Grown|IGI

1.06ct D SI1 Heart Lab Grown Diamond

EX • D/SI1 • IGI LG837630042

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG837630042

Diamond specifications and retailer prices

From £140 GBP
As of November 6, 2026
Save £146 GBP (51%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: £286 GBP at 77 Diamonds · As of November 5, 2026
View at 77 Diamonds

About this 1.06ct lab-grown heart diamond

This 1.06ct 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 LG837630042 or 837630042. Listed at 2 retailers as of November 5, 2026, with prices from £140 to £286, a £146 spread on the same certified stone. 77 Diamonds lists it at £286. 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

1.06
Carat
D
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle39.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG837630042
Dimensions6.12 × 7.11 × 4.20 mm
L/W Ratio1.16
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.12 mm7.11 mm1.06 ctD / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG837630042
Side View
Table 60.0%Crown 35°Girdle: MED-STKPavilion 39.8°Culet: NoneDepth 59.1%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 6
Current: £286 GBP|Low: £140 GBP|High: £329 GBP|Avg: £260 GBP|-12.8%
77 Diamonds
Retailer 2
November 5, 2026
Retailer 2£140 GBP
77 Diamonds£286 GBP

39 data points across 2 retailers

2 retailers£140 GBP to £286 GBP

A
Cheapest Retailer
-
£140 GBP
Final sale: no returns
Most Expensive
B+
77 Diamonds
HSTVSWZCZRRPK · Nov 5
£286 GBP
View
1 more retailer has this diamond
Prices start from £140 GBPSave up to £146 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
1.06ct Heart
£140 GBP