Therefore,
according as these qualities, either all or almost all, are united in
good proportions in the same gem, the higher is its value and the more
it is prized amongst precious stones and feminine ornaments.
Whence,
in giving a list of precious stones according to the value at present
attributed to them, the above-mentioned qualities must be taken into
account, and allowance made for the different value caused by
diverÂsity of size, greater or lesser transparency, and so on.
Thus, considering them as equal in quality, they may be ranked as follows :
