Translations for ruby in French

Here are paragraphs from public domain books translated:

She raised her eyes and looked at him as he had requested. Then, without saying a word, she pointed to a ring he was wearing on his forefinger. Only the ring was visible; but the setting, which was turned toward the palm of his hand, consisted of a magnificent ruby. Arsene Lupin blushed. The ring belonged to Georges Devanne. He smiled bitterly, and said:	Elle leva les yeux, comme il le demandait, et le regarda. Puis sans un mot, elle posa son doigt sur une bague qu’il portait à l’index. On n’en pouvait voir que l’anneau, mais le chaton, retourné à l’intérieur, était formé d’un rubis merveilleux. Arsène Lupin rougit. Cette bague appartenait à Georges Devanne. Il sourit avec amertume :
The Extraordinary Adventures of Arsene Lupin, Gentleman Burglar, by Maurice Leblanc	Arsène Lupin gentleman-cambrioleur, de Maurice Leblanc