T & Company is Tiffany &; The abbreviation of Co, Tiffany, a famous jewelry watch brand, 1837 was born in new york, USA.
It's not AU750, it's Au750, which is the symbol of gold in the periodic table of chemical elements. Au750 is an alloy composed of 75% gold and 25% other metals, commonly known as 18K gold in China. Because the gold content is relatively small, the cost price will not be too high, but its hardness and color (calculated by 25% of other metal colors, it can be made into silvery white, champagne gold, rose gold and other colored gold) are more suitable for jewelry with complex and exquisite technology, so it is usually not sold by weight grams like gold jewelry, but by pieces.