Where do they get Kyber crystals?

Could you please elaborate on the origins of Kyber crystals? Are they mined from specific locations, or are they naturally occurring? Additionally, are there any limitations or regulations surrounding the extraction and trade of Kyber crystals? Furthermore, how do individuals or organizations gain access to these crystals, and what factors influence their availability and pricing? Understanding the supply chain and economic dynamics behind Kyber crystals would be greatly appreciated.