It might be possible for you to fashion one for yourself. Just be careful not to use base metals (iron, aluminum, etc).
I've been thinking for some time of doing this for myself. If I manage to get around to it, I'll probably use some nice hardwood such as black walnut or persimmon.
If you know of someone with access to a lapidary, you might see if you can get one made of stone. Onyx, granite, calcite, or aragonite would all work well, I suspect; also marble. Jasper might be a good choice also.
Let us know how it works out.
By the way, if you decide to try this, you may use these ratios for the structure:
triangle base, 9.5000;
sides, 9.0389;
pyramid height, 6.0479
I've been thinking for some time of doing this for myself. If I manage to get around to it, I'll probably use some nice hardwood such as black walnut or persimmon.
If you know of someone with access to a lapidary, you might see if you can get one made of stone. Onyx, granite, calcite, or aragonite would all work well, I suspect; also marble. Jasper might be a good choice also.
Let us know how it works out.
By the way, if you decide to try this, you may use these ratios for the structure:
triangle base, 9.5000;
sides, 9.0389;
pyramid height, 6.0479