ルビー - 含浸処理あり
The process of fracture filling ruby is a recent innovation that began around 2004. Rubies of good color, primarily from Madagascar, can be enhanced using a combination of heat treatment with lead glass. Because the refractive index of corundum and lead glass are very similar, light can travel through the stone unhindered. Fracture-filled rubies can often be bought in exceptionally large sizes that heat-only ruby would almost never be found in, and at a fraction of the cost of heated or untreated ruby. So they are of excellent value, as long as the treatment is disclosed and the price is appropriate.
全体の評価 -> 9
I frequently check the GemSelect website for a variety of gems. I've been very satisfied with the selection and quality of the top rated gems. All of the purchases I've made have turned out beautiful pieces of jewelry.