Made of ebony
hades throne is made from skulls and in the shape of a throne in the under world next to his wife's throne
Below is a link that features Hades the Underworld at a look over the course of current and past Greek history.
It is not described in myth.
Hades was the ruler of the underworld because he was tricked by Zeus after they defeated the titans and bashined there to look after kronos and tartarus
The God of the Greek underworld (which is called Hades) was Plouton (which the Romans Latinized to Pluto). He was often called Hades in reference to his realm. You could look at it this way. As Hades he was Lord of the Dead. As Plouton, he was King of the Underworld and everything in it, including the mineral wealth (gold, silver, etc.)
The symbol for Hades is often represented by a bident, a two-pronged staff similar to a pitchfork. Additionally, Hades is associated with the helm of darkness, which grants the wearer invisibility. In some depictions, he is also linked to the three-headed dog, Cerberus, who guards the gates of the Underworld. These symbols collectively convey Hades' dominion over the afterlife and the underworld.
I would think that it looked very dark and black with his scepter on it and a chain attached to it for his pet Cerberus.
he was not to look back at her until he returned out of the Underworld
THEY LOOK LIKE HADES in hercules
The cap of Hades is often described as invisibility or darkness. It is said to render the wearer invisible to mortal eyes and can also symbolize the hidden realm of the Underworld ruled by Hades in Greek mythology.
Hades' scepter is typically portrayed as a black staff with intricate patterns and designs, embodying themes of death and power. It may also feature symbols representing the underworld, such as skulls, bones, or flames, to emphasize his role as the god of the underworld in Greek mythology.
In Greek mythology, the god of the underworld, Hades, is often depicted as a dark and stern ruler with a beard, holding a scepter. He is typically described as being older and more somber compared to his brothers Zeus and Poseidon. The Roman equivalent of Hades is Pluto.