Industrial Jewels Pvt. Ltd. Manufactures Tube with Different Surface Finishes. Industrial Jewels Pvt. Ltd. Is certified with ISO 9001:2000 quality system standard. The Tube with Different Surface Finishes is manufactured from Sapphire and Ruby as per customer specifications. They are used in variety of applications. They are made in different lengths depending on each application. Tube with Different Surface Finishes is used for dielectric application, medical and diagnostics applications and as insulators.