It's about as heavy as a Grain of Sand
It's about one-and-one-fifth times as heavy as a Sesame Seed
In other words, 0.068 grains is 1.210 times the weight of a Sesame Seed, and the weight of a Sesame Seed is 0.8260 times that amount.(Sesamum indicum)
A sesame seed weighs approximately 0.0562 grains. The McDonald's Big Mac sandwich, which is well-known for its sesame seed top bun, accounts for the consumption of an estimated 31,000,000 grains of sesame seeds each day.
It's about one-tenth as heavy as a Grain of Rice
In other words, 0.068 grains is 0.150 times the weight of a Grain of Rice, and the weight of a Grain of Rice is 6.70 times that amount.(long grain; 14% moisture content)
A single long grain of rice weighs an average of 0.450 grains. A staple through most of human history, archaeological evidence indicates that the earliest rice cultivation was about 11,500 years ago.
It's about seven times as heavy as a Grain of Sugar
In other words, 0.068 grains is 7.05 times the weight of a Grain of Sugar, and the weight of a Grain of Sugar is 0.1420 times that amount.(a.k.a. white sugar, a.k.a. white refined sugar, a.k.a. table sugar, a.k.a. sucrose, a.k.a. saccharose)
A grain of sugar weighs approximately 0.00965 grains. Sugar consumption varies widely by country; the average citizen of the United States consumes about 944,000 grains of sugar each year.
It's about fifteen times as heavy as a Poppy Seed
In other words, the weight of a Poppy Seed is 0.067 times 0.068 grains.(Papaver somniferum)
Fifty percent oil by weight, a poppy seed weighs approximately 0.0046 grains. The true pigment of a poppy seed is brown in color, while the characteristic bluish color is an optical illusion caused by a layer of calcium oxalate crystals refracting light rays.
It's about one-fiftieth as heavy as a Raindrop
In other words, the weight of a Raindrop is 50 times 0.068 grains.(a.k.a. drop, a.k.a. droplet) (average)
The weight of a raindrop depends heavily on the type of weather, but averages about 3 grains. The familiar teardrop shape of a raindrop is actually an optical illusion, caused by the reflection of the light and the motion of the drop.
It's about 75 times as heavy as a Grain of Salt
In other words, 0.068 grains is 75.30 times the weight of a Grain of Salt, and the weight of a Grain of Salt is 0.0133 times that amount.The mass of a grain of salt is approximately 0.000903 grains. Salt consumption varies widely by country; the people of the United States consume a combined total of about 42,100,000,000 grains of salt each year.