The Diamond-G is plastic with a smooth black PU coating, earning a material safety rating of 8 here on Eden. It is also waterproof, which makes clean up easy- just use warm water and soap or a toy cleaner. Water or Silicone based lubricants are compatible with this toy.
There was no odor to this toy at all when I opened the package. After several uses, it still has no odor, other than the soap I used to clean it.
The Diamond G is designed to stimulate the G-Spot, and I found that it does exactly that. Its shape is absolutely wonderful, and was a good fit for my body. Keep in mind that though it is 4 1/2 inches long, there is only an insertable length of 2 1/2 inches, so if you want more than that, look elsewhere.
I would recommend this toy more for beginner or advanced users.
The Diamond G has three powerful functions, but for me, that's all I need. The vibrations are located throughout the length of the Diamond G, although more intense in the upper 2 1/2 inches, as it should be. I liked all three of the vibrations, which go as follows:
1) Strong, steady vibration
2) Strong pulsations
3) Medium to strong escalation
The Diamond G is a push button toy, and very easy to operate. Push once to turn on- the first setting is the strong, steady vibrations. Push again to cycle through settings 2 & 3, then once more to turn it off. The vibrations are pretty intense, therefore loud, so I wouldn't recommend this toy for anyone sharing a room unless they know they will be alone at whatever point in time they would like to use it. It takes two AAA batteries, very easy to find in stores, and they last much longer than any watch battery operated toy.
I have not yet tested this toy out in the water.
The Diamond G is plastic and waterproof, therefore you can clean it with warm water and soap, or toy cleaner. It is very easy to care for, which is something I always take into consideration when toy-shopping.
As for storage, I keep it in the package it came in, after letting air dry.
This toy is compatible with either water or silicone based lubricants.
The Diamond G came in the simple packaging that most toys come in- a plastic shell. The few instructions that came with it were printed on the insert inside of the package. The packaging is not discreet at all, so I would not recommend using it alone as a gift box, unless you and the person you're giving it to don't mind everyone seeing it. And until I get a box especially for my sex toys, I am using the plastic package as a storage box.