https://loft-concept.ru/catalog/dizayerskie_lyustry/lyustra_blount_chandelier_raised/ 

3d-model sconce for kit – https://3dsky.org/3dmodels/show/bra_blount_raised_wall_lamp_blount_smokey_wall_lamp_loft_concept_1 

Materials for Corona and Vray are hand-tuned.
Unique names of objects materials and textures.
The material for the on and off state of the lamps is applied to LED bulbs.
Instructions for working with the material in the archive.
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MATERIALS:
Vray 3.6 / Corona 5
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ARCHIVE:
Models – max-2015 fbx obj textures light bulb ICs
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UNITS:
System – mm Display – mm
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SIZE
HxWxD 700x800x800mm
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MESH:
Polys: 118322 Verts: 127128
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MODIFIERS:
No model in Editable poly
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ADDITIONAL PLUGINS:
No

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BE CAREFUL:
!! Vray 3.6. In the version below 3.1 be careful – in some materials in the BRDF section there is Microfaset GTR (GGX). If your version is older than 3.1 the BRDF field will be empty. Choose Blinn Phong or Ward – which is preferable for you.

!! Corona 5. For Corona render it is recommended to install version 1.5 or higher as the glossiness of materials is adjusted with PBR in mind.