How to make diamond looks real?

Questions
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22

Not sure if this is relivant to the later provided resources but on android the diamond seems to be not rendered at all in the earlier sandbox…

Screenshot_20221114_193723
Screenshot_20221114_1937231080×2085 81 KB

23

Try adding glare to the diamond, check diamond project, it looks so real

24

Do we have the source code for the diamond project?