Chad G.

Oxblood in glass is a deep, rich red color created by a copper compound that is fired under a lack of oxygen (reduction) during the firing process. This method produces a dark, often opaque red that can range from a deep maroon to a rich reddish-brown, and the exact color and quality depend on the precise control of the kiln temperature and atmosphere. Reduction firing: The glass containing copper is fired in a kiln with a limited supply of oxygen. Oxygen-starved environment: This "reduction" atmosphere prevents the oxygen from fully oxidizing the copper, which is necessary to achieve the desired red color. Temperature control: The key to making good oxblood is the precise temperature at which the reduction begins. If the reduction starts too early, the glaze can turn a dull red. If it starts too late, the red color may not appear at all, resulting in a clear glaze. Characteristics of oxblood glass Color: It's a deep, dark red with hints of brown, resembling maroon or burgundy. Opacity: Oxblood glass is often opaque, though it can appear translucent in areas where it is spread very thinly. Appearance: The color can be dense and may be concentrated near the surface or run through the core of the glass object, depending on the manufacturing process. Applications: It is used in various glass objects, such as marbles, pottery glazes, and architectural glass, with its value often tied to the skill used to create it. Oxblood can also dive into the matrix of the marble, not restricted to the surface. Surface oxblood examples :

Can't tell from the pix

Filled with water and used for rolling out dough, usually warm water.

X2, Alley here

Overlapping, no blending

X2, no ox, Most Pelts containing ox are MCS (Multi color swirls) but there is always an exception to every rule.

German

X3

X2, Alley

Vacor

X2, maybe, kinda looks Vitro ??

X2

X3, Alley

Two blue based and the red based is Pelt (Banana construction, in Kempskis book, I didn't know what it was) I think the two bigger ones are foreign ?? Not sure though, no idea what Fire's OP is

Salright

do you have a size ??

Wet mint Chocolate cow, every time I had one in hand it had blow holes

Ya, I like it too

Collapsed gas (air) bubbles(dimples) If it was buffed or polished the edges would be sharp

X2

X2

X2

Looks like ac stripey cat, foreign, European