The gem type specified is cubic zirconia, which serves as both the primary and sole stone in this design. The overall style is best described as elegant, suggesting a refined and timeless aesthetic. This piece is intended for a birthday occasion, marking it as a celebratory gift. The cubic zirconia, known for its brilliant sparkle and clarity, is the central focus, offering a luxurious appearance reminiscent of fine diamonds. Its elegant style ensures it complements formal attire while remaining suitable for special everyday moments. As a birthday gift, this combination promises a lasting impression of sophistication and thoughtful celebration, blending enduring beauty with the joy of the occasion.