The 3.5 carat emerald cut diamond ring offers a timeless, elegant look with its elongated shape and stepped facets, which emphasize the stone's clarity and create a hall-of-mirrors effect. However, compared to other shapes, a 3.5ct emerald cut diamond ring may show more visible inclusions and requires a higher clarity grade, which can increase the price.

The 3.5 carat princess cut diamond ring offers a contemporary and chic look with its sharp angles and brilliant facets, often providing more sparkle than other square or rectangular cuts. However, compared to round cuts, a 3.5ct princess cut diamond ring may appear slightly smaller due to its shape, and its pointed corners can be more prone to chipping if not properly set. For those seeking a modern twist on tradition, a 3.5 carat princess cut diamond engagement ring is an eye-catching choice, though it may require a bit more care than the more durable round counterparts.

A 3.5 carat oval diamond ring offers an elongated shape that can create the illusion of greater size and slenderize the finger, making it a popular choice for those seeking a distinctive yet elegant look. However, compared to other shapes, a 3.5ct oval cut diamond ring may exhibit the "bow-tie effect," a dark area across the center that can detract from the stone's brilliance if not well-cut. Additionally, while a 3.5 carat oval diamond engagement ring provides a larger surface area, it may also require a more protective setting since the pointed ends are more prone to chipping than rounder shapes.

The 3.5 carat cushion cut diamond ring offers a unique blend of vintage charm and modern sophistication, with its rounded corners and larger facets enhancing the stone's brilliance. However, compared to other shapes, a 3.5ct cushion cut diamond ring may appear slightly smaller due to its cut style and may also hide inclusions more effectively. On the downside, the 3.5 carat cushion cut diamond engagement ring might not have the same level of fiery sparkle as a round cut, and a 3.5ct cushion cut engagement ring can be pricier due to its weight and popularity.

The 3.5 carat heart shaped diamond ring offers a unique and romantic design, standing out as a symbol of love, ideal for those seeking a distinctive engagement ring. However, compared to other shapes, this 3.5ct heart diamond ring may exhibit less brilliance and can be more challenging to cut, requiring a skilled artisan to ensure its quality. While its shape is eye-catching, the 3.5 carat heart diamond engagement ring might also be less versatile for daily wear due to its pronounced shape.

The 3.5 carat pear shaped diamond ring offers a unique and elegant look, standing out with its teardrop shape that combines the brilliance of a round cut with the distinctiveness of a marquise. However, compared to other diamond shapes, a 3.5ct pear diamond ring may require more careful handling due to its pointed end, which can be prone to chipping if not properly protected by the setting.

The 3.5 carat radiant cut diamond ring offers a unique blend of brilliance and durability, with its cut combining the best aspects of round and emerald shapes. While the 3.5ct radiant cut diamond ring provides a distinctive, modern look and maximizes sparkle, it may not have the classic appeal of a round cut or the understated elegance of an emerald cut. However, as a 3.5 carat radiant cut diamond engagement ring, it stands out for its substantial size and eye-catching presence, though it may come with a higher price tag compared to less popular shapes.

The 3.5 carat Asscher cut diamond ring offers a unique blend of vintage charm and sophisticated elegance, with its distinctive step cut and squared shape providing a mirror-like reflection. However, compared to other diamond shapes, the 3.5ct Asscher cut diamond ring may show inclusions more readily and requires a higher clarity grade, which can increase its cost.