शुल्बं तारं वा गर्भः पत्त्राणां संघात्येषु क्रियते ॥ कZ_०२.१४.३० ॥
śulbaṃ tāraṃ vā garbhaḥ pattrāṇāṃ saṃghāṭyeṣu kriyate
Dalam pemadatan yang dilaminasi dengan helaian daun, tembaga atau dawai dijadikan ‘teras/inti’ (garbha) di bahagian dalam (iaitu bahagian dalam ialah logam asas manakala bahagian luar ialah helaian daun).
Placing a cheaper metal core (copper/wire) inside a laminated leaf structure so the outside looks precious while the inside is not.
Assaying must test interior composition (cut tests, drilling, density checks), not only surface appearance.