| 摘要 |
<p>The present invention relates to a detector for detecting the optical symmetry of a diamond, and more particularly to a detector for detecting the heart and arrow (H & A) pattern appearing through the internal reflection of a diamond polished symmetrically at an accurate angle including a diamond leveling device of a simple structure for leveling the diamond, which can be made small at low cost so as to be moved to and installed in any place and to make it possible to confirm whether the diamond has been polished considering the symmetry at a place of purchasing, thus guaranteeing the reliability of the diamond.</p> |
