Pay in 4 interest-free payments of $3.50 Learn more
Ships within 48 hours · Estimated delivery Oct 18 - Oct 23
Mohs hardness 7
Carnelian is a glassy
and can display a nearly emerald green color due to the presence of Chromium within the stone
Since gemstones (natural
Black Spinel 4mm Natural Round - 15-16 Inch 1207202148HR Mohs hardness 7Spinel is a hard vitreous magnesium aluminum oxide, and comes in a range of other colors, but those varieties are transparent. Black Spinel not only has the dark color, but it is opaque as well, rendering its black especially deep and mysterious. Sometimes called the "Black Prince's Ruby" for its role in the English crown. It has been mistaken for ruby and sapphire at times, but can be distinguished by its structure and its lower relative hardness.
