TSK · Revelation 4:3

and they saw the God of Israel. Under his feet there was something like a pavement made of sapphire, clear like the sky itself.

and the second row, a turquoise, a sapphire, and an emerald;

Above the platform over their heads was something like a sapphire shaped like a throne. High above on the throne was a form that appeared to be a man.

You were in Eden, the garden of God. Every precious stone was your covering, the ruby, topaz, and emerald, the chrysolite, onyx, and jasper, the sapphire, turquoise, and beryl; your settings and mounts were made of gold. On the day you were created they were prepared.

The city possesses the glory of God; its brilliance is like a precious jewel, like a stone of crystal-clear jasper.