INSTRUMENT FOR OBSERVING JEWELS' BRILLIANCE AS DIAMOND, AND METHOD OF TAKING PHOTOGRAPHS WITH SAID INSTRUMENT

摘要

The present invention relates to an instrument for observingthe brilliance of jewels, especially of diamonds, and a methodof photographing them with this instrument. The instrumentof this invention is composed of a lower tubular portion compris-ing a non-transparent material and an upper tubular portioncomprising a semi-transparent material, and a magnifying observ-ation lens can be furnished on the upper end part of said uppertuhular portion in accordance with using purposes of the instru-ment. The semi-transparent upper tubular portion can moveslidably with respect to the lower tubular portion. The diamondis positioned on a placing part within the lower tubular portion,and an observer studies it from the upper end part of the uppertubular portion. According to this instrument, the semi-trans-parent upper tubular portion adjusts appropriately the lightdirecting to the diamond, and as a result, it is possible toobserve characteristic patterns corresponding to the diamondbrilliance. Further, the photographing method of this invnetionis to take photographs of diamonds within the lower tubularportion with a camera from the upper side of the upper tubularportion of the instrument, and it serves to judge the diamondbrilliance more clearly than the conventional photographs ofdiamonds.