First, be aware that it is illegal to deliberately mutilate, damage or alter coins of the realm, moreso for any resulting fraudulent activity like representing the coin as something it is not. I presume that you would like to cut the coin in such a manner that enables you to see both sides of the coin, rather than two semi-circles. You will need somebody with fine cutting tools such as a jeweller or somebody who cuts gem stones.
Use a 20p and a 2p and cut them in half
No, a 2p coin cannot scratch apatite. Apatite is composed of calcium phosphate minerals which are harder than the metal used in a 2p coin.
A 2p coin in the UK weighs approximately 7.12 grams.
Great Britain discontinued the 1/2p coin in 1984 The U.S. discontinued its 1/2¢ coin in 1857
no
0.44444
2.7 mm
In British coinage the denominations lower than the 20p coin are the 10p, 5p, 2p, and 1p coins. There was also a half penny coin but this was withdrawn from circulation in 1984.
not much really
No, a 2p coin is unlikely to scratch apatite and orthoclase as these minerals have a higher hardness on the Mohs scale compared to the coin. Apatite has a hardness of 5 on the Mohs scale, while orthoclase has a hardness of 6-6.5, higher than the 2p coin.
That makes it easier to distinguish them.
2p