Did you try google?
I tired it and don't know if this is the variety but this is one I pulled up:
California-laurel (Umbellularia californica) - Oregon Wood ...
California-laurel is a moderately heavy, moderately hard wood with an even ... The average specific gravity is 0.51 (green) or 0.58 (ovendry). ... For comparison, black cherry has values of 3.7 percent and 7.1 percent, respectively . ...
owic.oregonstate.edu/species/myrtle.php