Oxblood+aventurine/Turquoise

[chocobogreens]

This is an opaque white marble, mostly white with a thin band of oxblood and what may be aventurine, or just a Turquoise green. Any ideas? 

[Chad G.]

Maybe Alley, mighty sparse though

[wvrons]

Probably Alley green and oxblood. I don't see any aventurine. 

[I'llhavethat1]

I believe that color green and oxblood happens frequently, whether intentional or formulation related.  Aventurine will sparkle under direct light.  In different terms:  no sparkle = no aventurine (no matter what shade or color).

[chocobogreens]

There is sparkling in some of the red, I assumed it was aventurine. Does oxblood sparkle? 

[I'llhavethat1]

Possibly.  Oxblood is Red.  Aventurine is usually in green or black.  It's thought the reaction has something to do with the minerals precipitating from the glass formula/heat, etc. ,  many colors are possible. I'm sure one of our more experienced glassworkers here, can explain it better.

[wvrons]

Aventurine in oxblood is very very rare. Small bubbles and open areas in oxblood can look some like aventurine.  A 10x or 20X loupe will solve the question. Aventurine is solid man made glass or chemical reactions, not a bubble, not transparent. It sparkles and reflects bright in very good light.  A loupe even a cheap one gives the answer.