Check the listing for details. Flashy Larvikite Tower 4"/122 Grams. Condition: New. Listed at 8.00 USD. This is a flashy larvikite tower. Larvikite is a coarse-grained igneous rock (a variety of monzonite) notable for large, often iridescent feldspar crystals that display a blue, silver, or multi‑colored schiller or labradorescence when polished.