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What is opticon?


#1

Hello Paul, Can you tell me what opticon is? Is it epoxy based or
something else? Martin Niemeijer


#2

opticon is a material used for filling gaps and cracks or other
imperfections in gemstones or lapidary materials.

There is also a material used for fixing windows on cars which is
similar. Epoxy? Chemical, yes.

Walt


#3

Hi. Opticon is an epoxy made by Hughes Associates of Wayzata, Mn…
It had been around for at least 30 years and maybe longer. It is
thin so it penetrates fractures well and it has an RI of about 1.55
which makes it a great fracture sealer for emerald.

Don


#4

Martin, Your message came out on the site so I thought I would
respond. The MSDS states that Opticon is in fact an epoxy resin.

Hello Paul, Can you tell me what opticon is? Is it epoxy based or
something else? Martin Niemeijer 

If you need a copy, Rio Grande has the MSDS for this item. Contact
them at www.riogrande.com. Hope this helps. Joe Lovato Neutec/USA


#5

Martin, ��� I’m sorry it took me longer than some others to respond to
your question! (I usually only check my e-mail during my morning
coffee.) Don Rogers had the most correct answer to your question as
far as giving you the manufacturer and the R.I… Amber has and R.I. of
1.54; which is close enough to that of� Opticon� such that no eye
visible diffraction line is observed at the crack being “repaired”. It
is indeed an epoxy type of resin/catalyst mixture as Joe Lovato
stated, and is available from Rio Grande as well as some lapidary
supply companies. It is used as a fracture filler on emerald or (any
other material within an R.I. range of +/- .025 of its 1.55 R.I.) and
as a cement for assembling doublets and triplets.

Paul