LA-ICP-MS Analysis of Natural Orangy-pink Sapphires ("Padparadscha") Enhanced with the New E(IM1)-Method

Fig. 47 Heart-shaped pink sapphires were subjected to the new E(IM1)-enhancement. On the left, a sample which was heat-treated and subsequently cut in half, while on the right, a half piece from another pink sapphire kept untreated for comparison. Each is about 0.5ct in weight. Note: Color change from pink to orangy-pink due to the enhancement process. Fig. 48 An orangy-pink sapphire cut in half after treatment, with the trail of Laser Ablation craters shown. The chemical data obtained allows for conclusions on the chemical composition in the faceted gemstone in profile across the sample.

Fig. 49a The chemical variations in a profile across the faceted and E(IM1)-color-enhanced orangy-pink sapphire is shown. Note depletion of trace elements in the rim (including Ti) of the faceted gemstone and enrichment in an inner rim (No. 5-8 and 19-22), including Cr, Fe and Mg. Fig. 49b The distribution of Beryllium in a profile through a faceted orangy-pink sapphire. Note: Be concentrations are found in the outer rim only (max. 14ppm). Fig. 50 LA-ICP-MS analysis in a profile across the sample (in ppm). Comparison of Mg and Be-enriched zones in the enhanced sapphire. The Mg-concentrations are depleted at the outer rim and the Be-concentrations are enriched

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