I seldom deal with other precious metals besides gold but I had a customer requesting I find him some platinum nuggets. It turns out this was quite a difficult task and only a few locations in the world have platinum nuggets. Platinum is more often found in ore and nuggets are extremely rare. This is one from Choco, Columbia. I purchased all that was available from a family who has been prospecting these for many years. Platinum nuggets are incredibly rare, more rare than gold. Platinum is more dense and heavier than gold, silver, or palladium (the three other precious metals).
Weight: 0.87 grams (15.40 grains)
Dimensions: 1/4" or 7mm