DOI Page / Citation link:
https://doi.org/10.11588/diglit.634#0238
Weights, and Frecious Stones. 2 x 5
Yellow, Blue, Green, and Reddish; whereof take notice, rating them Chap VII
according to their Waters: In our Climate the perfect White Water is •^v-O
most esteemed.
Rough, Brute, or Uncut Stones, are in Value half the Price of Cut, BmteStones.
or Polilhed Stones.
Neither the Thick nor too Thin in Substance is best j a Thick Stone, Os Perfcaion;
which is high and narrow Table, not making a mew answerable to its
Weight, raust be valued at less than that which is well spread, hath its
Corners perfect, and a pure White Water : Without Spots or Foulnefe, is
called a Paragon-Hone, and in full Perf&stion.
Uncut Stones are distinguistied into two sorts, Thick or Pointed,
which are called Naise-Hones, and Flat Stones: The Flat Stones are to be
cut into Roses or Thin Stones, the Naise into Thick Stones; and those
Rough Stones which will bear a good Ihape, without least diminilhing in
cutting, are in best Esteem.
The Names of Rough Stones, accordingto their Forms and Substance.
§ A Point.
A An J Point.
O A Thick Stone.
7 An \ Ground Stone.
\k Thin Stone.
1 A Rose Stone, if round; Is long, a Fossel.
A Naife.
The Rough Diamonds thatseem Greenest, prove of a good Water when
cut; and those that seem White when rough, prove often Bluissi
being cut.
Care is to be taken likewise in Choice os Rough Diamonds, to avoid
those that have Veins, for they will never cut well, seeming as if they
were filed with a rough File.
For vending, Stones of six Grains and under, to one and a hals,
are best.
For Tnal of a Diamond, take a Pointed Diamond, such as Glaziers
use, try it on any Stone but a Diamond, and it will cut the same.
The Diamond that is Sandy, or hath any Foulness in it, or is of a Blue,
Brown, or Yellow Water, is not worth half the Price of a perfect Stone
of a White Water.
For cutting of Diamonds, you'must never mould any Diamond in Sana
or Cuttle-bone, but you must use the second Lead to make a Patern of,
because the first will come somewbat less than the other.
Never call it osf but of the perfect Lead j for if you mould cast it with
Tin, it being the lighter Metal, you may wrong your Judgment thereby,
but in Lead you will find the Experiment to be good ; «&•
Take the Mould of the Stone you would' buy, which having moulded,
cjist it off in perfect Lead, then make a Patern of it; but before you. go
about to make a Patern ( of the Stone you would cut ) weigh the Lead,
and
Yellow, Blue, Green, and Reddish; whereof take notice, rating them Chap VII
according to their Waters: In our Climate the perfect White Water is •^v-O
most esteemed.
Rough, Brute, or Uncut Stones, are in Value half the Price of Cut, BmteStones.
or Polilhed Stones.
Neither the Thick nor too Thin in Substance is best j a Thick Stone, Os Perfcaion;
which is high and narrow Table, not making a mew answerable to its
Weight, raust be valued at less than that which is well spread, hath its
Corners perfect, and a pure White Water : Without Spots or Foulnefe, is
called a Paragon-Hone, and in full Perf&stion.
Uncut Stones are distinguistied into two sorts, Thick or Pointed,
which are called Naise-Hones, and Flat Stones: The Flat Stones are to be
cut into Roses or Thin Stones, the Naise into Thick Stones; and those
Rough Stones which will bear a good Ihape, without least diminilhing in
cutting, are in best Esteem.
The Names of Rough Stones, accordingto their Forms and Substance.
§ A Point.
A An J Point.
O A Thick Stone.
7 An \ Ground Stone.
\k Thin Stone.
1 A Rose Stone, if round; Is long, a Fossel.
A Naife.
The Rough Diamonds thatseem Greenest, prove of a good Water when
cut; and those that seem White when rough, prove often Bluissi
being cut.
Care is to be taken likewise in Choice os Rough Diamonds, to avoid
those that have Veins, for they will never cut well, seeming as if they
were filed with a rough File.
For vending, Stones of six Grains and under, to one and a hals,
are best.
For Tnal of a Diamond, take a Pointed Diamond, such as Glaziers
use, try it on any Stone but a Diamond, and it will cut the same.
The Diamond that is Sandy, or hath any Foulness in it, or is of a Blue,
Brown, or Yellow Water, is not worth half the Price of a perfect Stone
of a White Water.
For cutting of Diamonds, you'must never mould any Diamond in Sana
or Cuttle-bone, but you must use the second Lead to make a Patern of,
because the first will come somewbat less than the other.
Never call it osf but of the perfect Lead j for if you mould cast it with
Tin, it being the lighter Metal, you may wrong your Judgment thereby,
but in Lead you will find the Experiment to be good ; «&•
Take the Mould of the Stone you would' buy, which having moulded,
cjist it off in perfect Lead, then make a Patern of it; but before you. go
about to make a Patern ( of the Stone you would cut ) weigh the Lead,
and