[popculturizm]

Does this look aventurine to you? thanks in advance.

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[popculturizm]

second shot

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[semdot]

Sorry can't see it.

[glangley]

Isnt aventurine just undesolved dye/salts in the glass? I think I remember someone much wiser than I, telling me that awhile back. I don't see anything resembling aventurine in the first pics, although that last one looks like there might be something in the upper left side of the mib, just at the top edge of the green? What were those green mibs called that look somewhat like this one, that have aventurine for sure? Grasshoppers or something? Although I think they have a bit of blue on them with the green, and I forgot who made them already... jeeze my mind just doesn't seem to want to work at this hour. God Bless

[lstmmrbls]

Aventurine in Vintage machine made marbles are tiny metallic crystals that accidentally form when too much metallic Oxides(colorants) are used and just the right temps and cooling times allow the crystals to form.(the most common being chromium oxide)(green) Also different contaminents sometimes crysal out and form the chunky blotchy sparkly stuff that has also become known as aventurine. I have heard bearing grease with a high metallic content can form crytals or even look like oxblood at times. It is not uncommon on some Green corks.

[feelnmarbleous]

Looks like a Jabo to me.

[lstmmrbls]

To me also

[glangley]

Yeah, I see now. Weren't those called Gecko's or something? Neat mibs, gotta love Jabo's!

[popculturizm]

Jabo? we're they making Jabo's in the 1940's this is a 5/8" marble came in an estate lot with 6-8 popeye and lot's of oxbloods (silvers & carnelians) what would make you this this is a Jabo?

[ann]

Don't know 'bout no Jabo. But I don't see any aventurine --

[psia-antique]

lstmmrbls, on 08 November 2009 - 03:14 PM, said:

Aventurine in Vintage machine made marbles are tiny metallic crystals that accidentally form when too much metallic Oxides(colorants) are used and just the right temps and cooling times allow the crystals to form.(the most common being chromium oxide)(green) Also different contaminents sometimes crysal out and form the chunky blotchy sparkly stuff that has also become known as aventurine. I have heard bearing grease with a high metallic content can form crytals or even look like oxblood at times. It is not uncommon on some Green corks.

I am not sure this is an absolute as presented. Seems to me that there is some gold lutz (goldstone, aventurine) in some Alley Agates. I also believe there is black, red, and/or blue aventurine in Peltier. Both Alley and Pelt are vintage marbles.