Chinese Name：達碧茲石英 / 達碧茲水晶 / 查皮丘水晶
English Name：Trapiche Quartz
Chemical Composition：SiO2
Crystal System：Trigonal
Hardness：7.0
SG：2.65
RI：1.544 - 1.553 (Double refraction +0.009)
Birthstone：April 
Related Chakra：Crown
Locality： Japan, Burma, Colombia, Inner Mongolia of China
Remarks：Through the cross section, can see the 6-rays radiative pattern. This type of Quartz was first found in the Dorogawa-Goyomatsu mine, Honshu Island, Japan, Follow by other countries like Burma, Colombia, Inner Mongolia of China. It's a rare type of gems.

The name "Trapiche" comes from tra.pi.che (de azúcar), meaning "of sugar." The term trapiche was fist used for "trapiche emeralds", are named for the grinding wheel used to process sugarcane in the region of Colombia, South America where they are most often found.

The designation "trapiche" refers to a growth phenomenon that has been defined by the skeletal and sectoral growth of a crystal, yielding a fixed star when observed in sections perpendicular to the c-and optic axis of the crystals (Schmetzer et al., 2011).

Gem types which are found to have the trapiche pattern included: Emerald, Chiastolite, Corundum(both ruby and sapphire), Tourmaline, Garnet, Spinel, Aquamarine and Quartz