The scene contains:
-Water Bowl Fountain
-River stone
with 4 Different Marble.

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4 marble are available on scene.
Grouped models for easy editing.

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If you want Caustics In CORONA:
- Corona Renderer 4
- Just enable Caustics Solver,
- Render setup> performance> enable Caustics Solver.
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If you want Caustics In VRAY:
-UI Path: ||Render Setup window|| > GI tab
> Caustics,
-Enable caustics
-Disable the VRayMtl's Affect Shadows parameter when using caustics.
-Set Photon emit radius (V-Ray Sun)
-Increase Caustics Subvids (Vray Properties > V-Ray Sun)

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In the archive:
3Dmax 2014 (Corona+Vray) + OBJ + MTL

Scene weight:
Polys: 449,104
Verts: 412,752