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with a knife. Minerals that are not sectile will be broken into rougher pieces when cut. Metals and paper are sectile. Sectility can be used to distinguish...

Opus sectile is a form of pietra dura popularized in the ancient and medieval Roman world where materials were cut and inlaid into walls and floors to...

sectile from the triclinium (Antiquarium) opus sectile from the triclinium (Antiquarium) opus sectile from the triclinium (Antiquarium) opus sectile from...

church preserve opus sectile decoration. St. Nicholas Church opus sectile St. Nicholas Church opus sectile St. Nicholas Church opus sectile The Orthodox Liturgy...

and its artwork date to the early 4th century AD. The mosaic and opus sectile floors cover some 3,500 m2 and are almost unique in their excellent state...

Cosmatesque. Similarly, for works that use larger pieces of stone or tile, opus sectile may be used. Pietra dura is essentially stone marquetry. As a high expression...

arsenic sulfide mineral with the chemical formula α-As4S4. It is a soft, sectile mineral occurring in monoclinic crystals, or in granular, compact, or powdery...

minerals are sectile. Sectility is a form of tenacity and can be used to distinguish minerals of similar appearance. Gold, for example, is sectile but pyrite...

below, whereas opus sectile also includes figurative designs made in the same technique. Opus alexandrinum is another form of opus sectile, where only a few...

supporting the weight of the dome and ceiling. Below the dome is an Opus sectile pavement of multicolored stones. The church was built with a cross-in-square...

feature in galena, here presents only in traces. The mineral is perfectly sectile and has a shining streak; hardness 2.5, specific gravity is 7.2–7.4. It...

Opus sectile floor...

from uniform pieces (tesserae) of materials such as stone and glass. Opus sectile is a related technique in which flat stone, usually coloured marble, is...

Fracture Subconchoidal Tenacity Highly flexible but not elastic; slightly sectile Mohs scale hardness 2 Luster Metallic Streak Lead grey Diaphaneity Opaque...

Zodiac detail, from the opus sectile pavement in San Miniato...

Twinning On {111} Cleavage Imperfect on {111} Fracture Conchoidal Tenacity Sectile Mohs scale hardness 1–2 Luster Vitreous Streak White Diaphaneity Transparent...

fibrous to massive Cleavage Perfect on {0001} Fracture Irregular Tenacity Sectile Mohs scale hardness 2.5 to 3 Luster Vitreous to pearly Streak White Diaphaneity...

Granular to massive Fracture Subconchoidal irregular Tenacity Slightly sectile to brittle. Mohs scale hardness 2.5 – 3 Luster Metallic Streak Grayish...

amount of Cr substitution. The micaceous crystals are flexible and slightly sectile with a hardness of 2-2.5 on the Mohs scale. Fuchsite fluoresces lime green...

Sophia. The spandrels of the gallery are faced in inlaid thin slabs (opus sectile), showing patterns and figures of flowers and birds in precisely cut pieces...