Awhile back I posted A Thought on Dawn in which I argued that the sword Dawn shares more in common with the blades of the Others than it does with Valyrian Steel. There was some great discussion in the comments both pro/against the idea.

Anyways forget about the blades of the Others. Lets compare Dawn to their bones.

Comparing Dawn and the Bones of the Others

Dawn

He unsheathed Dawn and held it with both hands. The blade was pale as milkglass, alive with light. -AGOT, Eddard X

and:

Those who have had the honor of examining it say it looks like no Valyrian steel they know, being pale as milkglass but in all other respects it seems to share the properties of Valyrian blades, being incredibly strong and sharp. -TWOIAF, Dorne: The Andals Arrive

The Bones of the Others

Sam rolled onto his side, eyes wide as the Other shrank and puddled, dissolving away. In twenty heartbeats its flesh was gone, swirling away in a fine white mist. Beneath were bones like milkglass, pale and shiny, and they were melting too. Finally only the dragonglass dagger remained, wreathed in steam as if it were alive and sweating. Grenn bent to scoop it up and flung it down again at once. "Mother, that's cold." -ASOS, Samwell I

Which wouldn't be super crazy if outside of maesters' jars/the Crossroads windows (kinda), the only other things described as looking like milkglass are the following:

- phases of the moon (glass windows to the Temple of the Moonsingers on the Isle of the Gods in Braavos)

The Isle of the Gods is farther on. See? Six bridges down, on the right bank. That is the Temple of the Moonsingers."

It was one of those that Arya had spied from the lagoon, a mighty mass of snow-white marble topped by a huge silvered dome whose milk glass windows showed all the phases of the moon. A pair of marble maidens flanked its gates, tall as the Sealords, supporting a crescent-shaped lintel. -AFFC, Arya I

- Ghost Grass

Down in the Shadow Lands beyond Asshai, they say there are oceans of ghost grass, taller than a man on horseback with stalks as pale as milkglass. It murders all other grass and glows in the dark with the spirits of the damned. The Dothraki claim that someday ghost grass will cover the entire world, and then all life will end." -AGOT, Daenerys III

and:

beyond the walls of Asshai little grows save ghost grass, whose glassy, glowing stalks are inedible. -TWOIAF, The Bones & Beyond: Asshai by the Shadow

TLDR: I don't know if it means anything, but the bones of the Others and the description of the blade Dawn are quite similar.