vitreous lustre BrE
vitreous luster AmE

The crystals have a vitreous lustre and a white streak.

It has a vitreous lustre with a white streak, and is brown or yellow in color.

It is also transparent, brittle, and has a vitreous lustre.

Next the face is washed, dried and polished to a smooth vitreous lustre.

They are transparent to translucent with a white streak and vitreous lustre.

It has a vitreous lustre, poor cleavage and an irregular brittle fracture.

However, exceptional specimens of Australian precious opal may display a vitreous lustre.

Herbertsmithite has a vitreous lustre and is fairly transparent with a light-green to blue green color.

Higher rank coals are typically harder and stronger and often have a black vitreous lustre.

It forms smokey green crystals with a vitreous lustre and is found in Russian coal mines.

Niobokupletskite is transparent with a vitreous lustre.

Crystals are of a bright hyacinth-red color, translucent, and have an adamantine to vitreous lustre.

InSb has the appearance of dark-grey silvery metal pieces or powder with vitreous lustre.

Sapphirine is relatively hard (7.5 on Mohs scale), usually transparent to translucent, with a vitreous lustre.

Calcite is characterized by its hardness (3), rhombohedral cleavage, light colour, and vitreous lustre.

Red to reddish-brown or red-black in colour, Piemontite has a red streak and a vitreous lustre.

It is of a yellowish-green color, with a vitreous lustre, and a hardness of 5 on the Moh scale.

Muscovite is colourless or pale green, grey or brown, transparent of translucent with vitreous lustre.

Leifite is generally white or colourless, with a white streak and a silky or vitreous lustre.

It appears as royal blue to turquoise blue in colour, with a pale blue streak, and a pearly to vitreous lustre.

Serpierite is a sky-blue coloured mineral, with a white or almost white streak and a vitreous lustre, pearly on cleavages.

The tabular to prismatic monoclinic crystals vary from colorless to white or pale yellowish, and are transparent with a vitreous lustre.

It can form by direct deposition from a supersaturated solution, which produces true crystalline metatorbernite, with a dark green colour, translucent diaphaneity, and vitreous lustre.

Now my eyes sparkle with a vitreous lustre at even the thought of retrogressively metamorphosed omphacite-bearing eclogite with ubiquitous rutile and idioblastic garnet.

Fluorite is determined usually by its cubic crystals and octahedral cleavage; also vitreous lustre and by the fact that it can be scratched with a knife (H: 4).

It is nearly black in color and has a vitreous luster.

It has a white to very pale yellow streak and vitreous luster.

It can be transparent to translucent and has a vitreous luster.

The streak of this mineral is white and it has a vitreous luster.

It has a vitreous luster and leaves a brownish red streak.

It has a vitreous luster and pearly on the cleavages.

It is orthorhombic in form, colorless with a vitreous luster.

Both minerals are transparent to translucent, with a vitreous luster and white streak.

The crystals are broad and flat and have a vitreous luster.

It displays no cleavage and has a vitreous luster.

It is transparent with vitreous luster and uneven fracture.

It forms a colorless to yellow trigonal crystal with a vitreous luster.

Titanowodginite has a Mohs hardness of 5.5 and a vitreous luster.

These crusts tend to be yellowish with a silky or vitreous luster.

It is translucent, with a vitreous luster, and dichroic yellow to yellow-green.

It is green, as are many copper minerals, usually translucent, with a vitreous luster and a light green streak.

Campigliaite crystals are transparent with a vitreous luster.

It crystallizes in the monoclinic crystal system and is colorless to white with a vitreous luster.

It is semitransparent, colorless with pale yellow tints and shows a vitreous luster.

Its crystals are small tetragonal tablets with vitreous luster and perfect cleavage.

It has a vitreous luster and it is colorless, grayish-white or yellowish.

It occurs in tabular, acicular, or fibrous crystals with a vitreous luster.

It has vitreous luster.

Glassy nepheline has the form of small, colorless, transparent crystals and grains with a vitreous luster.

It is transparent with a vitreous luster with no cleavage and a Moh's hardness of 7.