Probably from badal; something in pieces, i.e. Bdellium, a (fragrant) gum (perhaps amber); others a pearl -- bdellium.
see HEBREW badal
H916. bedolach
בְּדֹ֫לַח noun [masculine] probably bdellium (ᵑ6 ; בְּדוּלְחָא ᵑ7; etymology dubious; LagGes. Abh. 20 proposes Sanskrit udûkhala) with article ׳הַבְּ, apparently therefore well known; one of the products of the land Havilah Genesis 2:12; used in simile of colour of manna הַבְּדֹלַח כְּעֵין וְעֵינוֺ Numbers 11:7. — Meaning somewhat uncertain; ᵐ5 Genesis 2:12 ἄνθραξ, Numbers 11:7 κρύσταλλος; Saad AW Ki Bo and others pearls, compare Lag Or. ii. 44; JosAnt. iii. 1. 6 Aq Theod Symm ᵑ7 most bdellium, an odoriferous transparent gum, of yellowish colour. (compare SmithDict. Bible SigismundAromata, 18.)