I need some help deciding on a diamond. For an engagement ring, we like the three-stone rings in platinum. We like the Zales diamond 1 ct G/SI $3999. But, after doing some research I think it may be overpriced and low quality. We did find a band with side IF diamonds for $1700. For the center diamond between 0.35-0.50 CT, what are your thoughts on Hearts of Fire diamonds, H & A, or 8*. Want to find a high-quality center diamond. Thank you