Where can you find a mini Pomeranian? Basically the answer is nowhere.
A Pomeranian dog which is recognized as show quality has to be in the weight range 3 to 7 lbs.
There is very good reason to have the minimum weight of 3 lbs. There are often problems with very small animals. Among the most common to appear are associated with health and vulnerability to ailments that larger animals of that breed often take in their stride.

There is usually an underlying health problem that restricts a very small puppy's growth. Most often this health problem will be of a very serious nature.
Breeding very small Pomeranians is often fraught with problems . Natural whelping is often impossible and veterinary intervention may be required , with the resultant vet bills.
The smallest puppies in a litter often will have problems feeding naturally from their mother. The larger, stronger puppies will push the smaller sibling of the teat. Human intervention , by way of tube feeding if the puppy is very weak or bottle feeding for a slightly stronger puppy, is required if this puppy is to survive.

In most animals the small members of the litters are called "runts". The runts are looked on as a real problem and are certainly not used in any breeding program , nor are they built up as something to be sought after. The percentage of runts are generally kept to a minimum in any good breeding program.
Very small Pomeranians are far more fragile than the normal sized Pomeranians. Often requiring a lot of special care during their lifetime.
Very small , or young Pomeranians are not suitable in household with young children.A small Pomeranian, or a young Pomeranian can be easily killed or suffer serious injuries by being dropped by a small child.

When purchasing a Pomeranian as a family companion or pet it is always important to select the very healthiest puppy available. A shortened life span on much loved family pet will have greatly affect all family members.

Always purchase your Pomeranian from a reputable, registered breeder. Ask your breeder about any health testing and DNA profiling done with the parents of the puppy. Only purchase from a registered Pomeranian. Avoid "breeders" who advertise their puppies as Mini ,or Miniature Pomeranians

I have found after talking to people asking about purchasing a Mini ,or Miniature Pomeranians, these people are actually asking to purchase the correct show size Pomeranian.

If you are still determined to have a very small Pomeranian [ less than 4lb as an adult ]. Go to extreme lengths to ensure that you purchase a healthy, active Pomeranian puppy.

I would avoid having a small Pomeranian puppy shipped, so make arrangements to see the puppy in the fur prior to purchase.
Ask about the puppy's age. Pomeranian puppies should not leave there mother and siblings until at least 8 weeks of age. A very small Pomeranian puppy should not be leaving the breeder until at least 10 to 12 weeks of age.

The Pomeranian puppy should not be over fat, nor should the Pomeranian puppy be underweight.
Look for a puppy with a well sprung ribcage and thick, chunky, straight, little legs. A small Pomeranian puppy does not need to be a weedy puppy with fragile bones.
Check the puppy's eyes. The eyes should be clear, bright and very alert. Avoid puppies with dirty, mucky eyes.
Avoid a puppy that has any type of discharge from the nose.
Check that the puppy has a correct bite. While checking the bite also checkthe color of the puppy's gums. Puppy's gums should be a healthy pink color.
The puppy's coat should have a healthy look and feel.
Avoid puppies, that are dirty, smell, have matted coat, or patches of coat missing.
Avoid puppies with fleas, run your hard through the coat, especially under the tail for evidence or fleas.
Avoid puppies infected with mites. Mites in puppies often look like very bad dandruff, again check under the tail area and tops of ears for mites.
Check for ear mites. Look inside the puppy's ears. if you notice any discharge,or if the inside of the ear is red and inflamed or filled with a black crumbly matter avoid this puppy and breeder.

Most importantly the puppy should very active , inquisitive and interested in everything that is happening .

Ask questions regarding the breeders sale contract and ask for a copy prior to the sale.

Have your new puppy vet checked as soon as possible after purchase. If any problem is found inform the breeder the puppy is being returned and why. You will need a written veterinarian report for this.

Good luck with your Pomeranian puppy.