Ruby, Sapphire or Emerald Tennis Bracelet?

I usually make jewelry after a client places an order since I’m a small business and jewelry can be expensive to collect but since these are some evergreen classics, I’m finally considering stocking on some 14K gold tennis bracelets. According to you, which of these variants do you think I should try making more of (Ruby, sapphire or emeralds?) Can’t decide where to invest

I usually make jewelry after a client places an order since I’m a small business and jewelry can be expensive to collect but since these are some evergreen classics, I’m finally considering stocking on some 14K gold tennis bracelets. According to you, which of these variants do you think I should try making more of (Ruby, sapphire or emeralds?) Can’t decide where to invest