Quartz and all varieties of Quartz
4.05 carat Bi-colour Purple and Yellow Bolivia Ametrine
3.92 carat Bi-colour Purple and Yellow Bolivia Ametrine
3.72 carat Bi-colour Purple and Yellow Bolivia Ametrine
4.21 carat Bi-colour Purple and Yellow Bolivia Ametrine
4.04 carat Bi-colour Purple and Yellow Bolivia Ametrine
3.31 carat Bi-colour Purple and Yellow Bolivia Ametrine
3.10 carat Bi-colour Purple and Yellow Bolivia Ametrine
3.16 carat Brazil Purple Amethyst
3.97 carat Brazil Purple Amethyst
3.41 carat Brazil Purple Amethyst