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Blue Quartz

Namibia has two localities for blue quartz one banded one not. The
banded one is called blue lace agate and it is very blue. At its
best the other locality is frequently an intense slightly lavender
blue chalcedony. I had a 33mm sphere cut for the later locality and
sold it for Euro2500 USD3000. Turkey is the major producer of blue
chalcedony but it is rarely the color match for the Namibian
material. Topaz is topaz, quartz is quartz.

Christopher L. Johnston
PO Box 354
Fax ++264-64-57-0548
Omaruru ~ Namibia

Awhile back, I purchased a cab of lovely translucent blue-green
quartz from a dealer friend who was very upfront about the material
being dyed. Since I planned to set the stone in a piece for myself,
this wasn’t an issue. Brought it home, tucked it away in my gem
storage and forgot about it for several months. When I got around
to tackling the piece in question, I found it covered with a fine
aqua-colored powder. Assuming the powder to be a residue from the
dyeing process, I cleaned it off and decided to wait a little longer
to see whether this would continue. A couple of months later, more
of the same, although not so much as initially. By the third cycle,
no more powder appeared on the stone. Interestingly, the color of
the stone was never noticeably affected. Curious indeed. The
completed piece has received lots of enthusiastic comments when I
wear it, but I wouldn’t consider using this material in work for
someone else without being sure they understood the color was
artificial. Anyone else experienced this phenomenon? How about
long term color changes in dyed quartz?

Susannah Ravenswing
Jewels of the Spirit
Winston-Salem, NC

(…where we can hardly wait to move into our new home and studio in
the Saura Mountains of rural Stokes County! Just three more weeks
til the dream comes true !!!)

There is a blue quartz that is grown from a clear quartz “seed.” It
is generally from Russia and many faceters use it. If the product is
dyed, one method to try is a little acetone on the end of a q-tip.
Rub it over the surface. If it bleeds blue, It’s dyed.

Gail Bumala, Sandy,
Oregon, USA
@Gail_Bumala

I finally took a quick shot of the “blue quartz” and am attaching
it. I am hoping that Hanuman will be kind enough to put it somewhere
and substitute a link.

Maybe it will be a little easier to guess what it is with an actual
picture, though, of course, I don’t expect difinitive ID from an
image ;>)

Noel

Noel,

From a picture it would be impossible to tell if this is natural or
dyed but let me make a suggestion.

From the picture it looks like this material is mottled with a white
color and also striations of a slightly darker blue color. This alone
"MIGHT" suggest that the material is not dyed since dyed material
often will be a more even color. Take a close look at the beads with
a 10x to 20x loupe or better yet with a microscope with darkfield and
overhead lighting. Look for any blotches of darker color. This could
be the result of concentrations of dye.

Good Luck
Greg DeMark
email: greg@demarkjewelry.com
Website: www.demarkjewelry.com

    I finally took a quick shot of the "blue quartz" and am
attaching it. 

It does look a lot like chalcedony, but could be a number of
different materials. The old "acetone with Q-Tip will likely show
whether they are dyed.

James in SoFl

Hello Orchidians everywhere,

Some of the first beads I bought for necklaces and earrings were
dyed blue “onyx”. I had a lapidary cut some in half to make cabs for
earrings. The cut revealed sort of a blue rind where the color had
penetrated.

That was well over 10 years ago. To my knowledge, none have rubbed
off color or faded. The hue is quite nice and very attractive -
people notice it.

Maybe this answers some questions.
Judy in Kansas

Judy M. Willingham, R.S.
B.A.E. 147 Seaton Hall
Kansas State University
Manhatttan KS 66506
(785) 532-2936 FAX (785) 532-6944

Hi Noel,

http://www.ganoksin.com/ftp/blue-quartz-closeup.jpg

This does not look like dumortierite or dumortierite quartz, which I
wrote about in another post. It’s beautiful, but I would be very
shocked to discover that it is natural, untreated quartz. It’s not
impossible, I suppose, but if that’s what it is, it should have cost
you significant bucks because it would be quite rare!

Beth

         It was labeled  by my  "rockhound" father as "blue quartz
from Nevada".  http://www.psi-design.com/bquartz.jpg 

Looking at Nancy’s picture, I think her quartz is from a deposit in
Washington. I do not know the location, but have seen it used in
larger intarsias to form the water in a picture with a boat. I have
obtained it before at silent auctions at rock shows. The pattern of
lines, an identifying mark for that location, give the impression of
ripples in the water.

Rose Alene McArthur

Hi Noel, Sorry for the late reply, been fighting forged email and
spam recently. From the photo it appears to be synthetic blue quartz.
There is a photo of this material in Simon & Schuster’s Guide to Gems
on page 353. Blue apatite may be another possibility but not sure if
that is what you have.

Simon & Schuster’s Guide to Gems and Precious Stones
By C. Ciprianai , A. Borelli

http://www.ganoksin.com/jewelry-books/us/product/0671604309.htm

Price: $11.20

Media: Paperback
Manufacturer : Fireside
Release data : 13 March, 1986

Will E.