3 adjectives to describe onyx

All, I observed, rose for a moment as Eveena's name was announced, from the further end of the hall, by the foremost of three or four persons vested in silver, with belts of the crimson metal which plays the part of our best-tempered steel, and bearing in their hands wands of a rose-coloured jewel resembling a clouded onyx in all but the hue.

There are five elegantly decorated salons, in which there are tables of costly onyx, and on whose walls there are paintings of great splendor.

As for her eyes, the customary similes of the court poets were gigantic onyxes or ebony highly polished and wet with May dew.

3 adjectives to describe  onyx