Sapphire price optical window glass

Product Description

For watch stones dark-red ruby conventionally is used. Such a tradition origi-nated in those times when watches were assembled by hand. Red stones are beauti-fully seen and less tiresome to the eye.

Watch “glasses” manufactured on the base of leucosapphire and light-colored sapphires are used by all well-known manufacturers of high-quality watches. This is not a fashion. You will see no scratches on such “glasses.” 

Although there are lots substrates which are regarded as potential materials to replace sapphire substrate, it is still dominated in the substrates (for GaN LED growth) market, because of its reasonable price and relatively low mismatch. Zhongju is capable of processing substrates according to customer needs. Currently, our sapphire substrate productions ranges from 2 to 12 inches with high quality and accurate orientation. 

Table 2 Specification of substrates


High purity single crystal sapphire

Surface Orientation

C-plane ± 0.1°

Primary Flat Orientation

A-plane ± 0.5°

Broken edge length





No inclusiontwinor boundary

Bubble and cloud

Dense bubbles, clouds, and scattered bubble marked and  counted as defects by length


≤1000 pits/cm2

Contact Information


ShanXiZhongJuJingKe Semiconductor Co., Ltd

Contact Person: yang



Address: No.2, machinery park, huitong industrial park, jinzhong development zone, shanxi demonstration zone,Jinzhong,Shanxi

Full name Contact Phone Content