The best of the New South Wales diamonds are harder and much whiter than the South African diamonds, and are classified as on a par with the best Brazilian gems, but no large specimens have yet been found.
The more elaborate patterns found on what is known as " figure rolled plate " are produced in a somewhat different manner; the glass used for this purpose is considerably whiter in colour and much softer than ordinary rolled plate, and instead of being rolled out on a table it is produced by rolling between two moving rollers from which the sheet issues.
The inner part is of a whiter and finer quality.
Recently prepared fibre is always stronger, more lustrous, softer and whiter than such as has been stored for some time - age and exposure rendering it brown in colour and harsh and brittle in quality.
In Honduras sarsaparilla the roots are less wrinkled, and the bark is whiter and more starchy, than in the Jamaica kind.
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