GST liabilities on Gold

We are in business of Gold sale / purchase

Now we want to give the Stock of Gold on interest basis to someone on interest basis for two years. and receive the interest @ 5%

As per GST Rules can we do this transaction ?
If yes, then clerify under which section / rule ?
What would be GST provisions or liabilities ?

Interest would be covered under GST forward charge basis or RCM BASIS ?

AWAITING