Skandapurana 1.4.11.164

1.4.11.164

jāṃbūnadamayaṃ devāḥ śitikaṇṭheti nāma ca..
śaṃkhaliṃgaṃ budho nāma kaniṣṭhamiti saṃjapan.. 13.164 ..

the gods, [a liṅga] made of Jāmbūnada gold, and the name “Blue-Throated”;
Budha, a conch liṅga, reciting the name “Youngest”;