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scienetific stones vs real stones

scienetific stones vs real stones

IT ought to be said first that the solitary genuine logical or manufactured stones available are those having the organization and properties of corundum, in other words, the ruby and...

scienetific stones vs real stones

IT ought to be said first that the solitary genuine logical or manufactured stones available are those having the organization and properties of corundum, in other words, the ruby and...

Colors concluded

Colors concluded

Pink Stones. Pink stones are yielded by (1) corundum (pink sapphire), (2) spinel (balas ruby), (3) tourmaline (rubellite), (4) genuine topaz (quite often misleadingly modified), (5) beryl (morganite), (6) spodumene...

Colors concluded

Pink Stones. Pink stones are yielded by (1) corundum (pink sapphire), (2) spinel (balas ruby), (3) tourmaline (rubellite), (4) genuine topaz (quite often misleadingly modified), (5) beryl (morganite), (6) spodumene...

Colors Green

Colors Green

Allow us first to consider what mineral species are destined to give us green stones. Excluding the semi-valuable dark or clear stones we have: 1. Grass-green beryl (the emerald) which...

Colors Green

Allow us first to consider what mineral species are destined to give us green stones. Excluding the semi-valuable dark or clear stones we have: 1. Grass-green beryl (the emerald) which...

Dispersion

Dispersion

ANOTHER property which may be made use of in deciding the identity of certain gems is thatcalled dispersion. We have seen in Lesson II. that light in entering a stone...

Dispersion

ANOTHER property which may be made use of in deciding the identity of certain gems is thatcalled dispersion. We have seen in Lesson II. that light in entering a stone...

Hardness (continued)

Hardness (continued)

Minerals Used in Testing Hardness. For testing stones that are more enthusiastically than a document the understudy ought to give himself the accompanying arrangement of materials: 1. A little gem...

Hardness (continued)

Minerals Used in Testing Hardness. For testing stones that are more enthusiastically than a document the understudy ought to give himself the accompanying arrangement of materials: 1. A little gem...

Hardness

Hardness

ANOTHER property by means of which one may distinguish the various gems from each otheris hardness. By hardness is meant the ability to resist scratching. The term "hardness" should notbe...

Hardness

ANOTHER property by means of which one may distinguish the various gems from each otheris hardness. By hardness is meant the ability to resist scratching. The term "hardness" should notbe...