Y Type Necklace
A Y-type necklace is a neck chain that intersects at the bottom, with one end of the chain extending further down. It looks like the letter Y from the front.
The intensity of yellowing is determined by a small amount of nitrogen. There were many yellowish diamonds originating from South Africa Cape Province, so yellowish diamonds are called "cape."
Cape, which is not colorless but slightly light yellow, is not so rare. Only beautiful darker yellow diamonds are deemed valuable.
[Moh's hardness: 10] [Mineral species: Diamond]