Any speakeer that comes with a diamond or diamonds or diamond dust,is more expensive than one without. Now the next question is does the hardness of a diamond mean anything in terms of sonics given that they add mass.
I think the carborundums (saphires) are next on the Moh's scale of hardness of well known gemstones. Don''t use Opals they are as soft as buttah.
I think the carborundums (saphires) are next on the Moh's scale of hardness of well known gemstones. Don''t use Opals they are as soft as buttah.