That's not the same as the collector named skyblue onyx oxblood. Those 1" are akro and were often found in #300 art deco boxes as shooters. Sometimes opaque white bases and sometimes clear based like based like yours with white, blue yellow or sometimes green instead of blue. They are a tricolor onyx oxblood Agate. Not easy to find. Akro didn't make any marbles that nice after the late 30s really. They didn't make any spirals.. all Agate 'patch types' .. low quality, easy to make, no high maintenance cam driven arm to make spiral agates.. Just plain agates with a few colors everyone calls patches.