Giving the pearl values in 1867, Emanuel1
says: "It would be almost useless to give any value for drop-pearls, as
when of large size and fine quality they are of so rare occurrence as
to command fancy prices; still, as a slight guide, it may be mentioned
that perfect white drop-pearls, of 80 to 100 grains, may be estimated
at from £7 to £11 [$35—$55] per grain; those of 50 to 80 grains at from
£4 to £7 [$20-$35] per grain, and those of 30 to 50 grains at from
£3-£5 [$I5~$25] per grain; smaller sizes bring from 20s. to 60s.
[$5—$15] per grain."
Emanuel also states that misshapen pieces called "baroque pearls" (perles baroques), are sold by the ounce, the price varying from £10 to £200 ($5θ-$ιοοο) per ounce, depending on quality, color, and size.