new crystal material - need help please~ | WatchTech

new crystal material - need help please~

Hello everybody~

I alredy posted about new crystal 3 month ago.

www.watchprosite.com

moissanite(silicon carbide) crystal glass has very high hardness(60% harder than sappire)---advantage

and I have found the graph about transmittance of moissanite crystal.

Is there anybody who can understand this graph??? please HELP ME ~~

you can see the UV area(ultra violet area),

I can see the UV area, and it is 0% transmittance.

It mean UV rays can not pass the moissanite crystal. is it right ??????? pleause let me know ~~ help me~~

If I am right, it is also very important advantage.!!! because UV rays make dial color change. and UV is not good with oil....

one more ~~

last time, nice friend told me advice about moissanite crystal color.!

missanite has rightly color(green, brown)

so I studied, and I find the way to make color better.(pure white)

there is the enhancement which is HTHP(high temperature high pressure)

thank you ~ and sorry..... because my bad English~

It is also mentioned in your chart that uv light does not pass

By: COUNT DE MONET : August 19th, 2017-01:35

Regarding the discoloration due to uv light: we call it patina of the dial and mostly we find patina very attractive. Another aspect of your introcuced glass is the hardness. If you drop a sampphire glass watch, the glass can break. The higher hardness of...

Toughness is similar with sapphire...

By: sonseik : August 19th, 2017-03:23

Thank you for reply. crystal break or not......... it is the toughness.. moissanite is single crystal. I know that moissanite crystal toughness is similar with sapphire. If moissanite crystal toughness is worse, it is very disadvantage.~ I will study more...

You are right

By: piccolochimico (aka dsgalaxy1) : August 19th, 2017-13:56

Zero transmittance means all the wavelenght is absorbed, in this case UV spectrum. The white moissanite is the best one amongst the 3 because the transmittance is stable and oscillates between 60% and 70% inside the visibile spectrum.

Thank you very much.~~ [nt]

By: sonseik : August 22nd, 2017-16:14

graph shows amount of light that gets through

By: Snarlax : August 23rd, 2017-14:55

The graph shows the amount of light that gets through the material at the various wavelengths. It seems to show that white moissanite doesn't let any UV light through, but visible light does get through. The other lines are just different materials.

Something to consider is that moissanite double refracts light, as does sapphire.

By: Emil Wojcik : September 2nd, 2017-15:49

I don't know the degree of refraction for either, but if moissanite has more pronounced doubling than sapphire, or if the crystal growth doesn't allow for it to be cut at an angle that doesn't show the double refraction, it could be a problem. I'm not a g...

Thank you for advice.~

By: sonseik : September 4th, 2017-16:22

You are right. moissanite has the double refraction.!! I already check.!! I think moissanite double refraction is not strong, i mean not big different with sapphire. so I think I can use by watch glass- just my opinion.!! Thank you very much for reply.~~