Monday, 9 July 2018
Which Metal-Pusher, for
Which Stone?
You can put your own thoughts along side of mine, if needed!
Aquamarine Brass, Copper
Smokey Quartz Brass, Copper
Citrine Brass, Copper (avoid Steel)
Zircon Brass, Copper, (too risky for Steel)
Peridot Brass, Copper, (too risky for Steel)
Pearl Brass, Copper (never, never with Steel)
Friday, 6 July 2018
Claw-Prong Pusher, which is best for you
Claw/Prong Pusher!
Which metal-pusher would YOU use, when, where and how?
Copper, Steel & Brass
Stone Pushers!
(The following paragraphs were taken from a previously written essay. This essay was written three years (2015) ago, the fonts are slightly different, but the text and information is still so very, very important!
If you find that there is a repetition of facts, my humblest apologies. That is because setting skills & talents haven't changed, just the year!
Much debate now centres on which
pusher gives the best suits and for which job. The merits of each metal will now be discussed in the greatest of details.
The Brass pusher is often used for Gypsy Setting
delicate stones such as Emeralds or other semi-precious stones. This Copper
pusher will not compress the gold around the girdle as much as a harder Brass
pusher might. (Note the word…“might”.)
Brass can be used with
gold, but it is still softer than steel. It is best used when setting
with Platinum. Use "Emery, Snap-On" paper wheel with a 'Medium grade' over its pushing tip to prevent deep marks. (This
technique may also be applied to the Copper & Steel pushers.)
Brass, however, delivers better results than the softer Copper. Neither Copper
nor Brass has the strength when applying heavy downward pressure for thicker
and wider Engagement-ring claws.
The potential for slipping is greater with
either of these two softer metals.
Steel is the hardest metal to use and too
unforgiving to be used for Gypsy Setting. The tip, or edges of the pusher can and always will mark or scratch the stone. It could destroy a facet, scratch Turquoise, or damage a softer Mohs scale stone.
The "Serrated Edge" of the
pusher will leave deep indentations in the metal and should not be used with Platinum. Often marks will remain for your cleaning after the setting and may require extensive
polishing.
Therefore reduce the much-needed metal thickness when setting
with gold or Platinum.
Please handle with great care with the softer metal with the steel pusher!
(Here is the newer essay that was written only a few days ago.
When & How to make them. I have in
my collection of pushers ranging from Brass, Copper & Steel. The
interesting question here is when to use them?
I believe in
fabricating or ‘modifying’ any new pusher, at a moment’s notice!
Let’s start with a steel pusher, I prefer to use a steel from a large file, just for that steel! I find that this steel is still great for many
decades to come, as you can see that one pusher I continually use, is only to
be on Diamonds. In fact, in this ‘steel pusher’ you can still see the old file
teeth still showing near the wooden handle. (BTW, that pusher being shown here is well over 50 years
old!)
Brass & Copper pushers are just
excellent, why so? Many stones you will be setting requires constant
thinking on what metal-pusher you need! I will just never think of relying on
one metal pusher, again why so? You are dealing with so many ‘hardness’ of
stones.
Most metal rods come in basic widths,
but I feel comfortable with a 3/16” inch diameter. But these ‘pusher tips’ should
sit comfortably in your hand and not to exceed the first knuckle of your middle
finger!
Would I use a ‘Steel-Pusher’ on an Emerald? Only if I want it to be broken and that is what happens if I do use steel on Amethyst, Emerald, Coral, Blue Zircon, Amber or Pearls?..;>(
If I do
use these pushers on the soft stones, my metal-pusher might slip off the
claw-tip and scrape or even ruin the “Crown, or the Star Facets” these might touch
these facets by accident & good-bye stone!
I think it is prudent that the many reasons be mentioned, as accidents could very well happen!!!
I will use Brass or Copper with these
stones and you should have the metal tip ‘trimmed to shape’ as these tips will
now have a serrated edge. These ‘textured surfaces’ are created by hitting the pusher-metal that you just created, with your large "Pillar" file.
The new teeth marks
will give you the desired texture that you need. A light 'hit or tap' will give the required 'minimum texture' you might need now at your bench.
I again prefer to 'roll over with the pusher' and I need to see & observe just where the pusher is making contact!
Where do you buy these specialized &
modified tools? Simple answer, you don’t, you have to make these new
tools yourself!
Your local or international tool suppliers
only sell the rod that is joined to wooden handles. You have to ‘trim
& create’ the tip and measure it to your length from your finger, to the palm
of your hand.
I will use a Pillar-file of #1 cut, to 'texture' the tip, then follow up with your Emery-disks of “Medium” grade just to smooth
the surface further.
This is followed by using a Pumice wheel of #180 grit.
The
basic metal tools that you buy from your supplier are just a ‘long metal rod’. You have much
to do in the “Reshaping & Experimenting" department!
If you have to set Pearls or Opal, what
tool would you use? I would test the softness of the metal and prepare to
again sculpt & modify the claw-tip just to fit against the claw. I would
drill a little recess into the pusher and that is just where the claw will rest
while being used.
When you are setting a Pearl in a 6-claw head. I would use a Copper pusher! Here is a little
solution to prevent any slippage. Have your pusher-tip drilled with a round bur just where you are applying pressure! Have this
bur-recess made larger than the claw, how is this done? I’d measure the claw
diameter, then have your new tip 1/2 mm larger in size.
If you use a steel-pusher; you very well could have the ‘serrated-edge texture’ remaining on the claw. That alone will cause you much stress
in trying to remove those deep marks & resulting in metal & great time lost!
To make such a textured surface. I always use a "Corundum,
If you are attempting to set an Opal,
Turquoise or even Amber I would suggest to use a soft Copper metal-pusher. For
you to use Brass, I’d shy away from using this metal on these very delicate
stones. This is still a very hard (pushing) metal to use, some problems might
occur! The problems are literally cracking the Opal, or just splitting the Turquoise. The Amber is rated too soft for cleaning, to use with your Pillar or Triangular files.
I’d keep using the new 'pusher' until you get the
‘feel’ of the amount of pressure being applied. Then you can graduate in using any
tool that you need. I still use the "softer metal" pushers, even today!
HOW DO YOU MODIFY THEM? Great question, so easy to answer!
I’d first use a ‘very rough file’ surface to
place a ‘texture’ on the tip, as I said once before, hitting it with a file to the
soft metal gives you just the texture that you need.
Once this is done, softly use
your pumice wheel at #180 grit to ‘gently smooth the coarse textured finish’.
On the Copper, 3/16” rod, use a round
bur at about the size of the claw that has to be pushed over. If you prefer a
larger claw-recess, do so! The claw has to fit comfortably against the
‘pusher‘. If you prefer to even ‘pre-polish’ the setting area and claws, please
do so now!
Then once the ring
is completely finished, you can place those so very soft stones into the ‘prepared claws’. Then
you can gently push over the claws but put the ring into your clamp lined with
tissue paper! Why so? I don’t want any marks remaining in the highly polished metal surface!
I keep my variety of ‘pushers’ all in long & short wooden
handles, all of them have little “Identifying Markings” in the handles.
At a moment’s notice, I can visually locate which handle has the ‘desired & required metal-pusher’.
My many steel pushers have
rectangular-shaped tips, even square-shaped tip, why so? I can literally
‘roll the metal tip over the contact area on the claw’. I rarely use my “Reciprocating-Hammer”
on any gentle stone.
Always keep additional pieces of the 3/16 inch rods near your bench. You just never know when you might be needing another similar (but not the same) pusher!
I have 8, metal-pushers & sometimes I feel that these might still not be enough!
Be creative in your thinking of the new tools you might need and how each might be used.
Just think that your own selection might be three or four just to get your gemstone settings completed.
Choosing the correct metal pusher is an 'acquired skill' and done at a moments notice! So don't worry if you fumble or make a mistake.
Sunday, 1 July 2018
Mohs Scale of Hardness for Gemstones
“Mohs Scale of Hardness!”
(This list is only for "Setting of Gemstones"!)
Name of Gem Hardness Ease of Setting
Easiest Difficult
Diamond 10 1
Ruby 9 1
Sapphire 9 1
Alexandrite 8.5 3
Topaz 8 2 =>3
Spinel 8 4
Blue Topaz 8 3
Emerald 7.5ó 8 10
Andalusite 7.5 4
Aquamarine 7.5ó 8 4
Iolite 7 ó 7.5 5
Smokey Quartz 7 5
Amethyst 7 5
Tourmaline 7 ó 7.5 5
Citrine 7 4
Garnet 6.5ó 7.5 4
Onyx 6.5 ó 7 3
Tiger Eye 6.5 ó 7 3
Zircon 6.5 ó 7.5 3
Bloodstone 6.5 ó 7 3=>4
Tanzanite 6.5 ó 7 3
Peridot 6.5 ó 7 4=>5
Moonstone 6 ó 6.5 5
Hematite 5.5 <>6.5 6
Fire Opal 5.5 ó 6.5 8
Opal 5.5 ó 6.5 8
Lapis Lazuli 5 ó 6 9
Turquoise 5 ó 6 9
Malachite 3.5 ó 4 8
Coral 3ó 4 10
Pearl 2.5ó 4.5 10
Amber 2ó 2.5 10
=====================
The “Rating of Ease of Setting”
is my own numbering system. Other setters might disagree with me, but I’m satisfied
with my own rating.
Saturday, 23 June 2018
Diamond Setting patterns! <=> Larger Stones
How many ways are there
to set an Engagement ring Diamond?
“The opinions & techniques on Diamond Setting, are expressly those of this Blog-Author”. The listing of these setting patterns” are from my work-experience spanning ONLY 60 years!
Although there are many ways to set a
Diamond, or Gemstone. With the assistance of the 'Computer Aided Design' program this dramatically helps the jeweller in designing an appropriate ring to match the new diamond.
During the past many years styles have evolved
& changed, but the basic designs, still stay with ‘us’.
With each photograph; I’ll explain in
detail where each stone is finally used with what size it can take.
Suffice to say, these patterns are now
to be kept in these blog-archives for posterity. Some of these patterns have gone
by the wayside and not seen much these days.
“In writing about them; I ask "Not now, when else? And if not by me, who
then will take their time in explaining these styles?"
Furthermore, I’m not doing this project for myself, I’m writing this blog for
everyone and including YOU! So let’s now start!
-----------------------------------------------
Let’s start with two ‘popular rings listed as
(A-B)’ from the 1960-70’s. I learned
to set these stones during my formative years in learning to set large stones.
=> A) This Gent’s ring, 'out of style' had a novel
way of holding the stone into the ring. No 'Setting of Stones in Wax' in those
earlier days everything had to be set by hand. No errors, or mistakes were
allowed, “We learned perfection” right
from the beginning!
The size of the stone was
quite limiting, as it had to be of a size that still allowed the four corner bars,
each to be saw-blade cut & and the little
amount of metal to be lightly
pushed over the stone.
The stone size was usually from .15 ó to .40 point size.
But thankfully, this
pattern has been deleted and ‘put out to pasture’ =>The next ‘out of style’
engagement ring was named
“Flat-Topped Design”, the diamond range was in .18ó .38 point. I know these facts personally, as they
were the cornerstone for sales of the company I once worked for. Because of the
style of head, these rings were sold to the newly married couple who had a very
limited budget!
---------------------------------------
A
“6-Claw/Prong head” was so popular and still is, why so? It gives a great deal of security & as well lets the customer see much of the stone as possible! The
stone range is about .50 pointsó 1.00 carat.
One of the best and basic rings ever created
was & still is the 4-claw head!
There are no limitations as to what size of stone can go into this head. I’ve seen a stone in this ring design from
basically a .30 point size & to over 1.50 carats. I prefer to have my
CAD person have the stone prior to designing thus making ring perfectly fit the
stone!
---------------------------------------
One of the most popular styles in Fancy-Cut
stones is the “Pear-Shape”! I’ve
seen either a round claw, or a “VEE” shaped claw covering the point of the
stone. Either method, the point of the stone is paramount in protection and
security from breakage! In this design, I’d prefer “Double-claws”, as one claw
is too fragile in the ‘security department’. The size of the diamond (measuring
in mm’s) is dependent upon also the customer’s budget. I’ve seen .75 (3/4 carat) ó 2.00 carat sizes, but these would be then carefully CAD designed just for these
“Fancy-Cut” stones.
--------------------------------------------
The most popular is the “Cluster-top”, now this can be such a
wonderful showing of diamonds, why so?
When all of the diamonds when placed
“side by side” the effect is great! It gives the customer more access to “Show
& Bling” & for less money spent.
This ring has 16, (3.0mm’s) stones of .08 points EACH and a .15+ point (4.5mm’s)
center! I like this design as it gives height,
as well as width. You will
see the same ring style, but now seen as a pendant option.
“Halo
rings”, so darned great to look at … even though these shown are only in silver and set with CZ’s. As all
of these ‘essays rings’ are in silver and set with CZ’s. The diamond sizes used are 16, .015 points and a center size
depending on the stone requested.
This ring is CAD created WITH THE STONES
on hand. No guessing, or ‘mix to match’!
The CAD creator needs
all of the diamond measurements before his skill of computer-designing takes
place!!!
The favourite choice of stones for
these special rings are either in a Round shape, or using Cushion-cut stones. I
personally prefer a stone with no sharp corners (Square or Princess-cut). If
this stone is needed, there may be some problems while in setting.
-----------------------------------
“Square
stone, or Princess Ring!” There are many designs where a square, or
Princess-stone can be set. Some are shown here in this essay. I use two
different styles in my teaching to my students, which is best is your choice.
Again for that special order, I suggest to get your ring CAD created.
Remembering, that all claws must eventually not be bent over to grab the stone.
On this particular style of a ring, it is advisable to “Pre-Polish” lightly prior to setting.
--------------------------------------------------
“Tube-Set and
Half-Bezel ring”. One thing to understand is that in
any Tube-Setting, there is an amount of 10-15% of the metal covering the stone.
Appraising is quite difficult and leads to much guess-work. If you select this
style of ring, get the stone ‘Pre-Certed” prior to setting, or as it’s properly
named “Pre-Appraised”.
Remembering, that there could be an ‘inclusion’ just at
where the girdle is now being covered!!
----------------------------------------
“Triangular, shoulder-stones”. This particular shape of stone is very delicate to set. I’d ask you to
be careful in working with these shapes of stones. In the empty mount, I was
asked to set Triangular-shaped, Rose-Cut diamonds but have them upside
down…what? Yup! The studio owner requested them to be “Culet” up & then the
“Table facet” facing down!!! The nice part is that the corners were completely
covered & protected. In the center, the owner wanted her “Rose-Cut” center-stone secured with not 6, but 8 claws! Too many claws and all are covering the multi-faceted
stone!
(There was a further challenge; as her initial design made that I couldn’t set her shoulder stones. I had to re-design the end-bezels and give more space between the ‘head & the shoulder bezel-claws’ all of this with the help of my CAD designer.)
--------------------------------------------
Another pattern is having two Triangular stones on the shoulders. I prefer to have the shoulder stones mounted, or set first. Then Laser-solder the head, why this convoluted process? I need full access to the mini-claws, filing of the claws, then getting the polishing process completed.
I didn’t want ‘big blobs of metal’ holding the little stone.
(There was a further challenge; as her initial design made that I couldn’t set her shoulder stones. I had to re-design the end-bezels and give more space between the ‘head & the shoulder bezel-claws’ all of this with the help of my CAD designer.)
--------------------------------------------
The corners of these stone are so sharp, you can break them just by looking at them. Once the stones were set, I “Bright-Cut” the inside of the “Vee” shaped claws. Do the "Rouge polishing", post setting post.
Setting this delicate stone is a 9 out of 10 on the “Difficulty Scale”.
But I had to ‘archive my past experiences’ in creating this new ring, was this easy? NO! But I found that knowing the procedure in how to set a Princess ‘Vee’ shaped claw, greatly help me!
-------------------------------------------------
“Marquise shaped stone”. I
prefer to have two, round-shaped, end-claws giving security to the points of
this fancy-cut stone. The claw tips must be made round & smooth to your
touch. In this case, the center stone is
set first, then the shoulder-stones are set afterwards! I’m even thinking
of pre-polishing the Marquise-stone claws first.
If I attempted to set the shoulder stones
first, then the center stone next, many of these claws could get crooked. You
might even lose a stone after a short while.
It could get to be a quite a messy setting job! “Center first, then the
shoulders, agree?”
---------------------------
When setting an Oval stone, I'd prefer to use round tipped claws, as these are more aesthetically appealing.
---------------------------
When setting an Oval stone, I'd prefer to use round tipped claws, as these are more aesthetically appealing.
In this essay, I prefer to show how the larger stones are set. In the next essay and accompanying this essay (part 2) are setting for smaller stones..for example; Gypsy/Flush, Shared Claws and a mini, 4-claw layout.
For private training in Diamond Setting, I offer in-house training programs from 3 to 5 days. Contact me at "gerrylewy18@gmail.com"
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