Mexican opals are an amorphous form of silica (quartz group of minerals), and are the national gemstone of Mexico. These stones are fragile, and while they may be used for pendants and earrings, Mexican opals are not recommended for rings due to their insufficient hardness. Mexican opals are not treated. |
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The figures are based on Gemval's aggregated valuation statistics for the retail market. Irrelevant, controversial or repeat data are excluded from our analysis wherever possible. The figures are updated monthly.
Occurrence is represented in % for different weight categories.
Occurrence is represented in % for different value intervals.
Occurrence is represented in % for different clarity grades.
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