Cutting element incorporating a cutting body and sleeve and an earth-boring tool including the cutting element

A cutting element for use in a drilling and/or milling bit, comprising:

• a substrate having an upper surface;
• a superabrasive layer overlying the upper surface of the substrate, wherein the superabrasive layer comprises an upper surface, a rear surface secured to the upper surface of the substrate, and a side surface extending between the upper surface and the rear surface of the superabrasive layer;
• and
• a sleeve in direct contact with and extending around at least a portion of the side surface of the superabrasive layer and of a side surface of the substrate, wherein the sleeve exerts a radially compressive force on the superabrasive layer greater than a radially compressive force on the substrate.