Skandapurana 1.4.11.150

1.4.11.150

padmarāgamayaṃ śukro viśvakarmeti nāma ca..
hemaliṃgaṃ ca dhanado japannāmnā tatheśvaram.. 13.150 ..

Śukra, a liṅga of ruby, and the name “All-Maker”;
and Kubera, a gold liṅga, likewise reciting the name “Īśvara”;