Cyclosilicate

Question 1

Also called as ring silicates

Answer 1

Cyclosilicates

Question 2

This ring element has the formula (Si3O9)

Answer 2

Triangular ring shape

Question 3

Ring silicates that forms a shape of a square.

Answer 3

Si4O12

Question 4

Ring silicates that forms a hexagonal ring elements

Answer 4

Si6O18

Question 5

BaTi (Si3O9)

Answer 5

BENITOITE

Question 6

Color of benitoite

Answer 6

Light blue to indigo blue

Question 7

Distinguishing feature of benitoine

Answer 7

Fluorescent and displays pleochroism

Question 8

Ba(Sn,Ti)(Si3O9)

Answer 8

Pabastite

Question 9

Distinguishing features of pabastite

Answer 9

Fluorescent (bluish white in short-wave UV light)

Question 10

Pb (Ca,Mn)2 (Si3O9)

Answer 10

Margarosanite

Question 11

Crystal system and Distinguishing Feature of margarosanite

Answer 11

Triclinic // displays a bluish white fluorescence in short- wave UV light.

Question 12

Well known six membered ring silicates

Answer 12

Tourmaline group

Question 13

formed by hydrothermal activity, a process that carries hot water and vapours along with the necessary elements to form crystals in pockets, cavities, fractures, fissures, or any open space in igneous and/or metaphoric rock where crystal growth can occur.

Answer 13

Tourmalines

Question 14

REFERS TO THE PROPERTY OF THE MINERAL TO CHANGE COLOURS IN CORRELATION WITH THE PATH LENGTH THAT THE LIGHT TRAVELS THROUGH THE MATERIAL

Answer 14

Usambara effect

Question 15

Na Mag3 (Al)6 (Si6O18) (BO3)3 (OH)4

Answer 15

Dravite

Question 16

Brown tourmaline

Answer 16

Dravite

Question 17

Crystal system in tourmaline group

Answer 17

Trigonal

Question 18

The brown tourmaline displays an

Answer 18

Usambara Effect

Question 19

Na Fe3 (Al)6 (Si6O18) (BO3)3 (OH)4

Answer 19

Schorl

Question 20

Black tourmaline

Answer 20

Schorl

Question 21

Formula: Na (Li, Al)3 (Al)6 (Si6O18) (BO3)3 (OH)4

Color: Usually bicolored

Answer 21

Elbaite

Question 22

Watermelon tourmaline

Answer 22

Elbaite

Question 23

Purple and opaque variety of elbaite

Answer 23

Siberite

Question 24

Cu-bearing and electric blue variety of elbaite

Answer 24

Paraiba

Question 25

Formula: Na (Li, Al)3 (Al)6 (Si6O18) (BO3)3 (OH)4 Color: Green

Answer 25

Verdelite

Question 26

Green tourmaline

Answer 26

Verdelite

Question 27

Ca (Li, Al)3 (Al)6 (Si6O18) (BO3)3 (OH)4

Answer 27

Liddicoatite

Question 28

Type of tourmaline that showcases Triangularly-Banded pattern when cut

Answer 28

Liddicoatite

Question 29

Formula: Na ( Li, Al)3 (Al)6 (Si6O18) (BO3)3 (OH)4 Color: Blue, Greenish-Blue, Blue-Green

Answer 29

Indicolite

Question 30

Brazillian sapphire

Answer 30

Indicolite

Question 31

Specific color of indicolite

Answer 31

Saturated vibrant blue

Question 32

Formula: Na (Li,Al)3 (Al)6 (Si6O18) (BO3)3 (OH)4 Color: vivid pink

Answer 32

Rubellite

Question 33

Alias of rebellite

Answer 33

Aphrite

Question 34

(Mg,Fe)2 Al3 (Al) (Si5O18)

Answer 34

Cordierite

Question 35

Crystl system of cordierite

Answer 35

Orthorhombic

Question 36

Distinguishing feature of codierite

Answer 36

Pleochroic property

Question 37

Transparent var of cordierite

Answer 37

Iolite

Question 38

Be3 Al2 (Si6O18)

Answer 38

Beryl

Question 39

Distinguishing ft of beryl

Answer 39

Allochromatic

Question 40

Crystal system of beryl

Answer 40

Hexagonal

Question 41

Purest var of beryl

Answer 41

Goshenite

Question 42

Green var and cr-rich beryl

Answer 42

Emerald

Question 43

Blue green var and Fe-rich of beryl

Answer 43

Aquamarine

Question 44

Mg- rich and pink var of beryl

Answer 44

Morganite

Question 45

Fe-rich and yellow var beryl

Answer 45

Heliodor

Question 46

Raspberry pink and Mn-rich baryl

Answer 46

Red beryl

Question 47

K Na2 Fe2Li3 (Si12 O30)

Answer 47

Sugilite

Question 48

Six membered ring that Can exhibit unique inclusions, banding, or patterns that are specific to this gemstone.

Answer 48

Sugilite

Question 49

CuSiO3 *H2O

Answer 49

Dioptase

Question 50

Exceptional transparency. When cut and polished, can exhibit a glass-like luster

Answer 50

Dioptase

Question 51

transparent gem variety of Cordierite

Answer 51

Iolite