They are usually made of the milky quartz common in the region.

Barren milky quartz veins, up to 5 meters wide are found in close association to these faults.

Great slabs of translucent milky quartz made the roof, pouring in the sun's light diluted and cooled.

Principal inclusions Subangular and rounded milky quartz, including a few grains with a red coating, up to 1.0mm.

It was ordinary milky quartz.

Other parts more rich in volatiles have formed pegmatites featuring milky quartz and pink orthoclase.

Although few artifacts were collected, they are similar in style to Independence I collections, and again milky quartz is the predominant raw material.

Milk quartz or milky quartz is the most common variety of crystalline quartz.

Kalan turned and drew aside a curtain of scarlet velvet, revealing a flat oval of milky quartz about two feet long.

Common colored varieties include citrine, rose quartz, amethyst, smoky quartz, milky quartz, and others.

It simulated a natural grotto with three shallow terraces, carved from lustrous olivine shot through with rich veins of milky quartz and gold.

It is characteristic of amethyst that quite often only the tips of the crystals are deep coloured, the remainder grading into milky quartz or rock crystal.

Milky quartz, possibly obtained locally, is the predominant raw material of stone artifacts, and several artifacts bear a striking resemblance to Independence 1 tool types.

The more sheer drops, of hundreds of feet, were stark naked rock shades of brown and tan embedded with vertical seams of milky quartz.

The crystal skulls are a number of human skull hardstone carvings made of clear or milky quartz rock, known in art history as "rock crystal".

It is mostly porphyritic biotite Precambrian granite with large microcline phenocrysts, and has occasional inclusions of white and milky quartz and pegmatite.

The hill is composed mostly of high-purity milky quartz and it occupies the inactive Lantern Hill Fault, which runs south into the Atlantic Ocean.

Sediment mixing can be recognized by the presence of a high proportion of 'milky quartz' that is highly characteristic of sands and gravels deposited by the River Rhine.

Some pieces are only gold (a new area for Jorge) while some are set with gemstones such as orange chalcedony, opal and milky quartz, deftly carved to sit within their frames.

Lapidary and decorative stone is varied and includes several types of attractive rock including serpentinite, leopard rock, jade, jasperized banded iron formation, and copper-coated (malachite, chrysocolla, cuprite) milky quartz.

Made up entirely of white milky quartz, it is one of the longest quartz outcrops of its kind in the world, measuring about 14 km long above ground and up to 50 m wide at certain sections.

Girasol opal is a term sometimes mistakenly and improperly used to refer to fire opals, as well as a type of transparent to semitransparent type milky quartz from Madagascar which displays an asterism, or star effect, when cut properly.

This 16.5 ft (5 m) interval includes zones of heavy white clay and milky quartz veining cut by veins with grey quartz and minor naumannite (Ag-selenide), quartz vein brecciation, and two notable areas with strong adularia coating on fractures.

"I don't know how they drew hair-fine wire like that," Mr. Merrin said, marveling at the detailing on the earrings as well as on a seventh century B.C. neo-Assyrian stickpin, which is a cube of the gold-and-silver alloy electrum topped by a milky quartz ball of chalcedony.