Rock Measurement of Physical Properties
1. Hardness is by a Scale of 1 to 10   (there are about 1500 known minerals, only a few common enough to form rocks or to decide on how they look)
#1 is Chalk/Gypsum (very soft) type of Rock  to #10 Diamond (Very Hard)
Granite #6- Feldspar (most rock on earth) and other Types of mineral in the same hardness. (#6 & 7 were formed with volcanic activity)
Granite #7 is the Quartz Type  (can only be 20% quartz) and other Types of  minerals.                                                                             NOTE: ( gypsum,limestone's are #2 Marbles are #3)
2.Color-Blacks can be Magnite, Dolerite, Hornblende, Proximal, Graphite's are gray to black and can be found in Marbles. Galena's are Gray.
Tourmalines can be Pink, Red, Brown, Black and Green. Greens can be Chlorite,Schist or Gneiss Brecca,
Pyrates are Pale Light colors and Yellows. Garnets can be Ruby Red, Black, Brown, Pink or even Green: Most will be with Mica or Pyrate.
Minerals as pure Quartz, Calcite, gypsum and salt (halite) are colorless or white. Orthoclase and Apatite show various pinks, greens and other colors.
How the stone Heats up & cools down (Swirls,Streaks etc), Separates & how the Minerals turn into Gas, determines the Pattern in Lava.
Glass is the shiny small crystals that you see in some stone.                        Only 1 mineral will not dissipate into gas, it is Copper
3.Luster is by Grades: Grade A (High shine), B (Medium Shine) & C (low Shine)
4.Transperancy ( how much or little you can see thru) & Translucency (pearly, opaque, etc)
5.Streak (strike 2 pieces together, the 1 that marks other is 'harder')
6.Specific Gravity (weight)
7.Cleavage(cracks & voids)	Rock Bottom Granite & Remodeling
8.Fracture (lines & fissures)	1-805-584-8190                Return.