Precious stones in Revelation

The author of the Book of Revelation mentions a number of precious stones. What is interesting is that this list constitutes, perhaps, 15% of the hapax in this book.

271 amethyst; Rev 21:20; Ex 28:19; 39:12; Eze 28:13

969 beryl; Rev 21:20; Ex 39:13

2393 jaspar; Rev 4:3; 21:11,18,19; Ex 28:18; 39:11; Is 54:12; Eze 28:13

4552 sapphire; Rev 21:19; LXX

4556 the reddish precious stone sardius; Rev 4:3; Ex; Pr; Eze 28:13

4556.1 the reddish precious stone carnelian; Rev 21:20 no LXX

4557 the precious stone sardonyx; Rev 21:20; no LXX

4665 The emerald; Rev 21:19; Ex; Eze

5116 topaz; Rev 21:20; LXX

5192 hyacinth stone; Rev 21:20; LXX

5472 precious stone chalcedony; Rev 21:19; no LXX

5555 chrysolite; Rev 21:20; Ex; Eze

5556 precious stone of the yellow green color chrysoprase; Rev 21:20; no LXX

You will of course recognize that most of these precious stones are described in Exodus as being part of the robe of the High Priest.