Mother of pearl/irridecent material

[moony]

Some threads about Iridescence/pearlescence/opalescence

Micro/angle dependent Roughness & Iridescence

I have created this thread to discuss and further develop the “micro roughness” effect - whereby the apparent roughness of a semi-glossy material falls off at grazing angles - thereby making reflections sharper. I have already created a node group to simulate this effect and a BDRF solution to this effect has also been described in a siggraph paper - both linked below. These two images show an arc vis scene from Blendswap both without (top image) and with (bottom image) the effect active. …

A complex approach - Iridescence in cycles

I was wandering today on how to make a more accurate iridescence effect. I know that using the layer weight and a rainbow ramp can produce some acceptable look, but not quite accurate. The big problem, is that cycles will color all the scattered rays with the same color at the point being rendered and not each ray by their own direction. So i was thinking how to overcome this, and have something more real. And then i remembered that the samples for each pixel don’t hit everytime in the same pr…

cycles pearl material help

i’m trying to make a watch and i’m finish modeling, but i’m stuck on the pearl matherial, how does all of it is white but when looked in an direct angle to the pearl, there are multiple colours? and there’s a meaty colour hue on it, i tried using the light path node, with a colour ramp, but it doesn’t work the material is something like the shell of this: [image] and with the hue of http://diamonds-n-dust.com/uploads/pearl.gif

Opal Material

I found this video on vimeo. It purports to have been made using cycles, but there is no tutorial or node group for it. Was just wondering if perhaps the person who made it is a member here and could provide any insight? I have been trying to create such a material, but haven’t had a lot of luck with it.