ダイヤモンドの指紋
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概要
- 論文の詳細を見る
Since it is undesirable to mark on individual cut stones of diamond, there has been no appropriate method to fingerprint cut stones. Two circle-goniometric measurements of many brilliant cut diamonds have demonstrated that there is not a single stone which gives exactly the same ρ, φ values of facets. This is naturally expected, since diamonds are cut manually. Probability calculations have shown that the probability to meet two stones having exactly the same ρ, φ values for 8 bazel facets is 2. 13×10^<-27>. Therefore, the ρ, φ values of bazel facets can be used as a method for finger printing cut stones. A new reflection theodolite goniometer is designed to diminish time required for goniometric measurements. It is possible to measure a stone with this goniometer in less than 15 minutes.
- 宝石学会(日本)の論文
- 1975-06-15