diamond appraisal

1.) 10x-60x

2.) DARK FIELD ILLUMINASTION & overhead lights

 

*Flourescent u.v. FREE light

 

*White light used to check colors.

 

Chrystal System-

 

  • How many carbon items is in a <UNIT CELL> Answer 18<it's the basic building block for a mineral
  • Atoms- basic building block for elements
  • Amorphous- Without form
  • Hardness
  • Toughness
  • Stability

Cutting

Cleaving plane- 4 planes- octahedral plane

6 planes - dodecahedral plane (softest plane and best polishing.

3 planes- cubic plane

Cubic plane- best sawing 2nd best polishing

Planes- cubic has 3 planes because 6 faces parallel to each other form 3 planes.

 

Octa               Cubic                                             Dodeca

 

8 faces           6 faces                                           12 faces

 

4 planes          3 planes                                           6 planes

 

*-Cleaving      *-Best Sawing                           *-Best Polish Softest

 

-Trigons       -Second easiest polishing                            -Groove

 

 

*Find Planes by locating growth marks

 

TRIGON - Triangular depression from surface

Cubic - Square or rectangular depression

Groove- Parallel Depression

 

Durability - TOUGHNESS, HARDNESS, STABILITY

 

Clarity characteristics Only

 

1.) Inclusion

2.) Blemishes


 

MACLE- twin crystal triangular outline and features.

Specific Gravity - 3.52

Relative Density - 4.17