Computers and Electronics What size is a 3/4 diamond? What size is a 3/4 diamond? approximately 5.8mm What does 3/4 CT TW diamond mean? total weight What size diamond is considered big? 2-carats Related Posts:What size is 1.3 carat diamond?A detailed look at various diamond clarity characteristics is included in the ultimate guide.What size diamond is considered big?How much is a .2 diamond worth?