@darpan patel,
Red Coral and Ruby can go well together. Both in combination will enhance your inner force and make you more ambitious. You can wear Red Coral in Pendant and Ruby in ring finger in Gold. But the contradicting part is that Blue Sapphire does not go at all with both Ruby and Red Coral. One should not wear a gemstone of the Lord of malefic (evil) house.
Kindly, submit your birth details for better suggestions.
My Best Wishes!!!