Estee Lauder Blackened Sapphire is a very cool-toned, very dark blue with a matte finish. It is a limited edition eyeliner that retails for $20.00 and contains 0.04 oz.
Estee Lauder Blackened Sapphire Pure Color Intense Kajal Eyeliner ($20.00 for 0.04 oz.) is a deep navy blue with a hint of indigo. It has a matte finish, and it has a fair amount of pigmentation in a single pass, but it builds up really easily and well. The texture is creamy without being slippery. It has a really dense feel and wears well on the lash line for ten hours or so (waterline is less, five to six hours). I couldn't think of any dupes--a lot of my navy blue eyeliners are lighter or have shimmer, which tends to lighten the overall appearance.