Sapphire

Uncut Rough Yellow/clear Sapphire

When I talked to Carol about this sample, she thought is would be blue, much like you and I would.  I later discovered that Sapphire can also be yellow, purple, orange, clear, aka white, and green.  It is Mohs scale hardness 9.0, next to the hardest, diamond, at 10.  A red one would be called a Ruby.  The chemical formula is Al₂O_3. 

Uncut Rough Yellow/clear Sapphire

_{I found lots of industrial uses for sapphire.  Since it is basically corundum, it could be used as an abrasive.  Synthetic sapphire could be used for unbreakable glass.  This sample came from Sri Lanka.} 

Uncut Rough Yellow/clear Sapphire

_{I enjoyed photographing this sample.  I wonder is someone started to rough it out for polishing and quit for some reason.}

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Spinel

Spinel

This is spinel, a gem whose formula is MgAl₂O_4.           

 This sample comes from Burma, now known as Myanmar.  As you can see, it is translucent.  A gem quality sample would be transparent.  Its color could be red, pink, blue, lavender/violet, dark green, brown, black, clear.  Mohs scale hardness 7.5–8.0.  

Spinel

A red clear one could be called a ruby.

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Memories From the Past Season

Tall Sunflower

I loved the tall sunflower then as I miss it now.

Gold Finch

This bird may stay around this winter but the tall sunflower has died.

Slaty Skimmer Female

Eastern Cottontail

 

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