NARS Algonquin is a very cool-toned, very dark lavender with a sparkle finish. It is a limited edition nail lacquer that retails for $20.00 and contains 0.5 oz.
NARS Algonquin Nail Polish ($20.00 for 0.50 fl. oz.) is described as a "sparkling lilac." It's a muted, medium-dark lavender purple with neutral-to-cool undertones and lighter, silvery-lavender flecks of sparkle and shimmer. It had mostly opaque color coverage, but there was visible nail line after two coats. The finish had a light shine to it, but I would recommend a top coat with it, as it isn't as glossy as other polishes in the range. The formula seemed slightly thicker, though it wasn't problematic to work with. NARS Kalymnos (P, $20.00) is much lighter and a cream. L'Oreal The Reign of Studs (LE, $6.99) is more glittery, brighter. Rescue Beauty Lounge Forgiveness (LE, $20.00) is lighter, less sparkly. NARS Night Rider (LE, $20.00) is warmer. Cult Nails My Kind of Cool Aid (P, $12.00) is less sparkly. Zoya Nimue (P, $9.00) is darker, finer shimmer. See comparison swatches / view dupes.