|Spinel is highly sought after by gem connoisseurs with spinel crystals in high demand among collectors. In general, red spinel is the most desirable, followed by cobalt-blue spinel, then by vibrant hot pink and vivid orange stones.|
|Red spinel ranges from orangy red to purplish red, with pure red hues the finest. A top quality 5 carat red spinel might sell for a tenth the price of an equivalent ruby. Pink spinel often sells for less than pink sapphire.|
|Larger spinel sizes rise considerably in per-carat price. |
Prices rise sharply for fine red, pink, and blue stones above five carats.