Purity = supposedly pure, but sublimates indicate minor contamination. I have tested many so-called 999 & 9999 “pure” bullion silver and have always found traces of lead and sometimes bismuth, but anyone should recognize this by the purity stamps.
Image taken with 35mm camera with a 135mm lens, set at macro for close-up focusing, shutter speed = 1/250th of second in bright sun using 200 film and developed by Kodak 1 hour commercial labs and then digitized.
Slight amount of a light brownish-tan sublimate.

Image created with B&L SZ5 microscope @ 40 power, coupled to a ccd camera and computer.
Sublimate colors are slightly different than the above photo due to intense light source.
A pinkish-brown color is normal for this type of oxidized silver.
The cracks in plaster tablet are due to heat from propane torch.
The carved out depression is to help keep the metal in a confined area due to blast from applied torch flame.

Equal amounts of Silver and Bismuth
Image taken with 35mm camera coupled to a 135mm lens, set at macro for close-up focusing, shutter speed = 1/250th of second in bright sun using 200 film and developed by Kodak 1 hour commercial labs and then digitized.
Notice how far the outer sublimates radiate due to the low melting point of Bismuth, which would also carry some Silver.

Equal amounts of Silver & Bismuth
Image created with B&L SZ5 microscope @ 40 power, coupled to a ccd camera and computer.
Sublimate colors are slightly different than the above photo due to intense light source.
The yellow coloration is the Bismuth.
The cracks in plaster tablet are due to heat from propane torch.
The carved out depression is to help keep the metal in a confined area due to blast from applied torch flame.
Obviously silver and bismuth have no trouble sharing same space, but certainly affects the shape and color of bead. Sometimes bismuth has hints of pinkish-red.

Equal amounts of Silver and Copper.
Image taken with 35mm camera coupled to a 135mm lens, set at macro for close-up focusing, shutter speed = 1/250th of second in bright sun using 200 film and developed by Kodak 1 hour commercial labs and then digitized.

Equal amounts of Silver and Copper
Image created with B&L SZ5 microscope @ 40 power, coupled to a ccd camera and computer.
Sublimate colors are slightly different than the above photo due to intense light source although some of the reds from copper is very noticeable.

Equal Amounts of Silver & Lead
Image taken with 35mm camera coupled to a 135mm lens, set at macro for close-up focusing, shutter speed = 1/250th of second in bright sun using 200 film and developed by Kodak 1 hour commercial labs and then digitized.

Equal amounts of Silver and Lead
Image created with B&L SZ5 microscope @ 40 power, coupled to a ccd camera and computer.
Sublimate colors are slightly different than the above photo due to a low light source.
The primary purpose of the magnified views is to illustrate the metal bead and the effects of alloys that affect appearance, shape and color.

Equal amounts of Silver and Antimony
Image taken with 35mm camera coupled to a 135mm lens, set at macro for close-up focusing, shutter speed = 1/250th of second in bright sun using 200 film and developed by Kodak 1 hour commercial labs and then digitized.

Equal amounts of Silver & Antimony
Image created with B&L SZ5 microscope @ 40 power, coupled to a ccd camera and computer.
Sublimate colors are slightly different than the above photo due to a low light source.
This magnified view clearly demonstrates how antimony can affect is to illustrate the affect appearance, shape and color.

Equal amounts of Silver & Tin
Image taken with 35mm camera coupled to a 135mm lens, set at macro for close-up focusing, shutter speed = 1/250th of second in bright sun using 200 film and developed by Kodak 1 hour commercial labs and then digitized.

Equal amounts of Silver & Tin
Image created with B&L SZ5 microscope @ 40 power, coupled to a ccd camera and computer.
Sublimate colors are different than the previous photo due to an intense light source.
This magnified view clearly demonstrates how Tin affects Silver.
Small metal beads can be seen on dark sublimate and I don’t know if these are Tin or Silver, but suspect Tin due to its low melting temperature.

Equal amounts of Silver and Zinc
Image taken with 35mm camera coupled to a 135mm lens, set at macro for close-up focusing, shutter speed = 1/250th of second in bright sun using 200 film and developed by Kodak 1 hour commercial labs and then digitized.

Equal amounts of Silver and Zinc
Image created with B&L SZ5 microscope @ 40 power, coupled to a ccd camera and computer.
Sublimate colors are considerably different than the previous photo due the intensity of light source.
Some of the Zinc powder did not unite with the Silver and was pushed away by the force of the torch blast, but the resultant metal button (resembles a pumpkin shape) clearly demonstrates how Zinc affects Silver.

Approximately equal portions of 99.99% Ag + 99.5% Thallium

As These two metal are merged a variety of sublimates form. The amount of sublimates is partially a function as to how much and how close the reducing or oxidizing flame is to the metal. I have tried to capture a variety of colors while the sample is still hot or at least warm, because many of the colors fade or disappear when the tablet is cold. Images taken with 35mm camera and a 50mm lens.

As more concentrated heat of the oxidizing flame is applied to these two combined metals the previous sublimates are volatilized and replaced with different colored oxides and carbonates.

This white plaster of Paris tablet is difficult to show the truly beautiful green color being emitted from the combined silver thallium melt. Although a blackened tablet shows the whites and light blue sublimate colors better than a white tablet this non-blackened surface shows these various colors better. The propane torch is seen here directing flame onto the melted metal.

10x of the above silver thallium metal bead. Color accuracy is not exact due to intensity of reflected light source as well as shadows. The dark brownish greenish-gray sublimate at right side of image is correct.

50x of same Ag & Tl melted bead surface as above image. The dark upper center mass and smaller similar masses appear to be oxidized thallium, which has thousands of tiny silvery metal spheres. The brilliant white and pinkish colors are not exact, which is due to effects of the reflected lighting. However the brownish gray masses with the tiny white specs are correct. Due to the curved surfaces I could not focus accurately, so I tried to compromise for an over-all surface image.