What does clear ice look like?
Clear ice, also known as gourmet ice, is exactly what the name suggests. The ice is crystal clear without a hint of cloudiness to it.
Clear ice refers to a solid precipitation which forms when air temperature is between 0 °C (32 °F) and −3 °C (27 °F) and there are supercooled, relatively large drops of water (from freezing fog).
Clear ice is clear because it's built of fewer and larger crystals. Cloudy ice is the result of many smaller crystals, which refract visible light and appear cloudy. That speed, as we've mentioned before, traps naturally occurring minerals, organic matter, and gases in the middle of the ice cube.
Clear ice, also known as large ice, craft ice, or artisan ice, is exactly what the name suggests. The ice has almost the same characteristics as a diamond, it's crystal clear, and without any hint of cloudiness.
Ice thickness guidelines are always given for clear ice. Official guidelines in Canada and the United States generally recommend 4” of clear ice for travel on foot, 5”-7” for a snowmobile, 8”-12” for a car, and 12”-15” for a truck up to 5000kg.
Ice crystals are less dense than the water around them causing them to float, pushing air and impurities down into the denser water below and leaving the top with solid, clear ice.
At 5 inches of new clear ice should be enough to hold a single snowmobile or ATV or about 800 pounds. At 8-12 inches the ice should be suitable for a small car or a larger group of people. Light pickup trucks or SUV's should be ok on new clear ice 12-15” thick.
Ice floats because it is less dense than the water.
Ice appears white when it contains trapped air bubbles and minerals. Some of the more common impurities found in water are minerals like calcium and magnesium, as well as sediment. As these things freeze, gases are released, creating air bubbles and causing ice to shrink on occasion.
When ice is clear, it's because no air bubbles have been trapped in it. Lots of trapped air makes an object look white. You may have noticed that your ice cubes usually look cloudy and opaque in the middle. The water from your faucet has dissolved gases and minerals in it.
What color is ice?
From the surface, snow and ice present a uniformly white face. This is because almost all of the visible light striking the snow or ice surface is reflected back, without any preference for a single color within the visible spectrum.
The cleanest, purest water freezes, and the minerals, impurities and air bubbles continue moving along. So the clear ice cubes made by commercial ice makers are simply made of the purest water. That's why they're clear!

Hammond says that water must be boiled for de-aeration: “Boiling will remove dissolved oxygen and other gases, as the solubility of gases in a liquid decrease as temperature increases.” Still, it should be noted that although boiled water will create clearer ice cubes than if you used tap water, if you're using a ...
Yes, clear ice melts more slowly than cloudy ice. Clear ice is purer and has less impurities, which means that it takes longer to melt. Large ice cubes also melt more slowly than smaller ones, so using clear ice cubes in your drinks will help to keep them cold for longer.
As a general rule of thumb, ice is safe to walk on when there is 4 inches or more of clear ice. It is important to understand that different types of ice varying in their strength. Clear blue or black ice is the strongest. This ice is formed from the lake water freezing.
To make clear ice we recommend using distilled water, boiled water, or water that comes out of a reverse-osmosis (RO) system. It may not come out perfectly clear but at least the ice will not appear cloudy. If you are looking to making clear ice it is more about the method of freezing than the water.
Make a hole in the ice using an ice chisel, auger, or cordless drill. Insert a tape measure into the hole, hook the end onto the edge of the ice, and take the measurement. If your reading is at least four inches, proceed with caution.
Distilled water will give you slightly more clear ice, but any clean water should work. Put it in the freezer, leaving the lid off or removed.
Many bars and restaurants have a dedicated ice machine that uses a variety of filtration and cooling processes to create clear ice. In our own homes, this would be overkill, but a commercial ice maker can make multiple ice cubes at once with tiny jets of water to fill the molds.
The Science of Clear Ice
In the context of ice, it means insulating five of the six sides of the container that holds water (all four sides and the bottom) to force the water to freeze from top to bottom, allowing the cloudiness from any sediment and trapped oxygen to form at the very end, at the bottom of the cube.
Does clear ice taste different?
Whether you make it with tap water or distilled water, clear ice just tastes better. Because it's pure water without the extra air, it doesn't pick up any “off” flavors from your home freezer the way that cloudy ice can.
Ice made at home or in most commercial freezers has lots of mineral impurities and air bubbles frozen in relatively small ice crystals. These impurities and small crystals create many surfaces within the ice that scatter light; since the light cannot travel in a straight line, the ice appears cloudy.
Also, clear ice melts slower. Large ice cubes alone are slower melting than smaller cubes, resulting in less drink dilution. Clear ice melts even slower than its cloudy counterpart because the purer the ice, the slower it will melt.
White ice or "snow ice" is only about half as strong as new clear ice.
Turn the temperature on the freezer up (less cold) so that the ice cubes will form slowly and allow oxygen to diffuse out of the water before it freezes. A freezer temperature set just below freezing (32°F) may work the best.
You're probably well aware of the fact that salt is used to prevent the build up of ice on roads, pavements and other surfaces that could become dangerous if frosted over. It works because the freezing point of salty water is lower than that of standard H2O.
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For instance, homemade ice will often melt much faster due to the presence of small air bubbles stuck inside the ice. On the other hand, a perfectly solid ice cube packed with only water molecules will have very small crystals and maintain its low temperature longer.
Blue ice occurs when snow falls on a glacier, is compressed, and becomes part of the glacier. During compression, air bubbles are squeezed out, so ice crystals enlarge. This enlargement is responsible for the ice's blue colour.
Since all the colors in sunlight add to give white, what we see when we look at snow is white: the sunlight that has reflected off and refracted through the water (ice) crystals to come back at us.
Understand that black ice is like regular ice.
It's called "black ice" because it tends to look like the rest of the pavement on the road, although in reality, it's Page 2 actually clear. Black ice forms without creating bubbles, which allows it to blend in with any surface it forms over.
Is ice clear of blue?
Pure ice has the properties of minerals. Like sapphires, glacial ice reflects the blue colors of the light spectrum, so beautiful blue color reaches our eyes. Glacial ice mostly looks white, since it is typically jagged and worn from exposure.
Ice can be almost as clear as glass -- but it usually isn't. A close look at an ice cube or a piece of natural ice will usually disclose air bubbles and particles, which scatter light and make the ice look cloudy. Water containing dissolved salts will not produce clear ice, either.
The term "black ice" in the United States is defined by the National Weather Service as "patchy ice on roadways or other transportation surfaces that cannot easily be seen. It is often clear (not white) with the black road surface visible underneath.
Green Bluish Cubes:Under rare circumstances, ice cubes may be discolored with a green-bluish color. The cause of this unusual discoloration is often due to a combination of factors: local water, household plumbing, and the accumulation of copper salts in an inactive water supply line which feeds the icemaker.
Crystal Meth
The clear, chunky crystals that develop are usually translucent, but they may be bluish-white in appearance. This form of meth — also known as crystal, glass or ice — is typically smoked or injected.
The problem: cloudy ice cubes, with unsightly bubbles in the center, even though you started with clear water and a clean ice tray. The answer: start with hot water, not cold. The reason: hot water holds less dissolved air than cold water. Those bubbles in the center of an ice cube come from air dissolved in the water.
Ice appears white when it contains trapped air bubbles and minerals. Some of the more common impurities found in water are minerals like calcium and magnesium, as well as sediment. As these things freeze, gases are released, creating air bubbles and causing ice to shrink on occasion.
White to opaque ice will have air pockets in it and is weaker than clear ice. Ice that is colored light gray to dark black is unsafe and you should avoid this type of ice as it may not hold a load. Mottled and slushy or what some people refer to as “rotten” ice – because of its texture.
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