Garnets range from red, brownish red, purplish red, orange, yellow to green. The most valuable varieties of garnets are tsavorites and demantoid garnets, both of which are green. Other desirable varieties of garnets are the purplish red Rhodolite and bright orange Spessartite and orangish-reddish-brown Hessonite. Some garnets display phenomena such as colour-change and asterism, the former refers to stones that change colour when seen under a daylight equivalent light source and under incandescent lighting and the latter phenomenon when cabochon-cut stones have a whitish star on top of the dome;Stone Size (mm): 7.5;Carat Weight (ct): 3.82