marbleize

or mar·bel·ize

[ mahr-buh-lahyz ]
/ ˈmɑr bəˌlaɪz /

verb (used with object), mar·ble·ized, mar·ble·iz·ing.

Also especially British, mar·bel·ise.
Related formsmar·ble·i·za·tion, nounun·mar·ble·ize, verb (used with object), un·mar·ble·ized, un·mar·ble·iz·ing.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019