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Radiant|Lab Grown|IGI

1.21ct E SI1 Radiant Lab Grown Diamond

VG • E/SI1 • IGI LG625469297

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG625469297

Diamond specifications and retailer prices

From HK$6,001 HKD
£603 GBP
As of November 5, 2026
1 retailer carries this diamond
Only listing: HK$6,001 HKD at Diamond Quarter
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 Diamond Quarter

About this 1.21ct lab-grown radiant diamond

This 1.21ct lab-grown radiant sits in the classic one-carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG625469297 or 625469297. Listed at a single retailer as of November 5, 2026. If it later appears at another store, Carat Hunter will surface the price comparison automatically. 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

1.21
Carat
E
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle43.1°
Pavilion angle33°
OriginLab Grown
Grading LabIGI
CertificateIGI LG625469297
Dimensions7.78 × 5.23 × 3.41 mm
L/W Ratio1.49
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
7.78 mm5.23 mm1.21 ctE / SI1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG625469297
Side View
Table 63.0%Crown 43.1°Girdle: MED-STKPavilion 33°Culet: NoneDepth 65.2%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Nov 5
Current: HK$2,469 HKD|Low: HK$2,469 HKD|High: HK$5,086 HKD|Avg: HK$3,793 HKD|-7.4%
Retailer 1
Retailer 2
February 6, 2026
Retailer 1HK$2,469 HKD
Retailer 2HK$4,616 HKD

14 data points across 2 retailers

1 retailer

B
Diamond Quarter
1.21SI1ELG97299FN · Nov 5
HK$6,001 HKD
£603 GBP
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B
1.21ct Radiant
HK$6,001 HKD