Search our site

...Everything you ever wanted to know about Sikkim

 Last modified:  

   SIKKIM JEWELS LIMITED   

Sikkim Jewels Limited was established in 1972 during the Chogyals regime when Sikkim was an independent country. Since then, it has and is engaged in the manufacture of Micro-precision products from Synthetic Sapphire and Ruby in India. The Company has been supplying jewels for meters, instruments and watches all over the world.

 

More than 220 strong trained workers are employed here. The unique features of the company  is that it has  a complete production facility from start to finish to cater to exact requirement of customers.

Products:
HOLE JEWEL
OLIVE HOLE JEWEL
HOLE JEWEL WITH RECESS
DOMED HOLE JEWEL
DOMED OLIVE HOLE JEWEL
HOLE JEWEL WITH TWO RECESSES
OLIVE HOLE JEWEL WITH TWO RECESSES
FLAT-DOMED END STONE
BEVELLED HOLE JEWEL
SPHERE
IMPULSE JEWEL
END STONE
SAPPHIRE / RUBY PIN
THREAD GUIDE FOR SPINNERS
THREAD GUIDE
DOMED OLIVE JEWEL WITH OIL RECESS
END STONE DOMED
ROLLER JEWEL
PALLET JEWEL
KNIFE EDGE
ROTOR MAGNET
Other products as per Customers specifications 

Characteristics:

PHYSICAL PROPERTIES

Crystalline Structure

Hexagonal

Density

3.99 / 3.98

THERMAL PROPERTIES

Melting Point

2320 K

Thermal Expansion

6.2.10-6 / K|| C-axis

5.4.10-6 / K^ C-axis

MECHANICAL PROPERTIES

Hardness

9 Mohs

Knoop

2200 face || C-axis

1800 face^C-axis

Modulus of Elasticity

4.4 x 106Kg/cm² /±1% Young E

CHEMICAL PROPERTIES

Acid and Alkalis Attack

0 at 570 K

Porosity

0

ELECTRICAL PROPERTIES

Dielectric Constant

10.6 electric field || C-axis at 300K

Electrical Resistivity

109 W.m at 770 K

104W.m at 1270 K

10 W.m at 2270 K

OPTICAL PROPERTIES

Refractive Index nD at 0.5893µm

1.760 face || C-axis

 

Back

Contact Info

Sikkim Jewels Limited

Tadong - 737102
Gangtok -Sikkim.
INDIA
Tel : 91 - 3592 - 231861 / 231419
Fax : 91 - 3592 - 232127 / 231864 / 222822