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Heart|Lab Grown|IGI

1.21ct E SI1 Heart Lab Grown Diamond

ID • E/SI1 • IGI LG626496502

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG626496502

Diamond specifications and retailer prices

From £334 GBP
A$688 AUD
As of November 6, 2026
1 retailer carries this diamond
Only listing: £334 GBP at GemTrove
Only one retailer lists this diamond right now, and it is shown above, so there is nothing to unlock. Similar diamonds are carried by several retailers.
View at GemTrove

About this 1.21ct lab-grown heart diamond

This 1.21ct lab-grown heart sits in the classic one-carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG626496502 or 626496502. Listed at a single retailer as of November 6, 2026. If it later appears at another store, Carat Hunter will surface the price comparison automatically. 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

1.21
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.7°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG626496502
Dimensions7.46 × 6.67 × 4.36 mm
L/W Ratio1.12
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
7.46 mm6.67 mm1.21 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG626496502
Side View
Table 60.0%Crown 33.7°Girdle: THN-MEDPavilion 40.7°Culet: NoneDepth 58.4%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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Price History

Last verified: Nov 6
Current: £334 GBP|Low: £220 GBP|High: £874 GBP|Avg: £362 GBP
GemTrove
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
October 31, 2026
Retailer 2£220 GBP
Retailer 5£230 GBP
Retailer 3£269 GBP
Retailer 6£290 GBP
Retailer 4£315 GBP
GemTrove£334 GBP
Retailer 7£874 GBP

5 data points across 7 retailers

1 retailer

B+
GemTrove
GT-L-01120926-98 · Nov 6
£334 GBP
A$688 AUD
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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.

B+
1.21ct Heart
£334 GBP