| 摘要 |
The present invention relates to an instrument for observing the brilliance of jewels, especially of diamonds, and a method of photographing them with this instrument. The instrument of this invention is composed of a lower tubular portion comprising a non-transparent material and an upper tubular portion comprising a semi-transparent material, and a magnifying observation lens can be furnished on the upper end part of said upper tuhular portion in accordance with using purposes of the instrument. The semi-transparent upper tubular portion can move slidably with respect to the lower tubular portion. The diamond is positioned on a placing part within the lower tubular portion, and an observer studies it from the upper end part of the upper tubular portion. According to this instrument, the semi-trans-parent upper tubular portion adjusts appropriately the light directing to the diamond, and as a result, it is possible to observe characteristic patterns corresponding to the diamond brilliance. Further, the photographing method of this invnetion is to take photographs of diamonds within the lower tubular portion with a camera from the upper side of the upper tubular portion of the instrument, and it serves to judge the diamond brilliance more clearly than the conventional photographs of diamonds.
|
