It does look like a crystal version of Orthanc, a bit. Very attractive.
By the way, I believe Orthanc was built by the Numenorians when they first established their kingdoms in Gondor and Arnor. It's located between the two.
Quote:
Partly it was shaped in the making of the mountains, but mighty works the Men of Westernesse had wrought there of old;
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and
Quote:
There stood a tower of marvellous shape. It was fashioned by the builders of old, who smoothed the Ring of Isengard, and yet it seemed a thing not made by the craft of Men . . .
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From The Two Towers, The Road to Isengard.