Modern 9ct White Gold, 28 carat Bi-Colour Amethyst-Citrine (Ametrine) Necklace feed-condition-used Knoll & Pregizer operated between

Knoll & Pregizer operated between 1887 and 1975 from Pforzheim Germany

The ring sits low on the finger - making it an ideal engagement ring

which gained great popularity thanks to its notable patron

and the setting of the opal is one of the finest we have ever seen

The design references the Art Nouveau style

Modern 9ct White Gold, 28 carat Bi-Colour Amethyst-Citrine (Ametrine) Necklace feed-condition-used Knoll & Pregizer operated betweenSet on a simple 9ct white gold chain, this emerald cut ametrine weighs an impressive 28 carats! This ametrine is likely from the mines in Bolivia and has a wonderful bi colour of orangey yellow with purple. Other names often used for ametrine include trystine and golden amethyst. Ametrine is a crystalline quartz consists 50 50 of amethyst and citrine. Amethysts and citrines are the same gemstone, but different temperatures and pressures in the earth