This mother's 18. 5 x 3. 5mm vertical bar-style pendant can be personalized with the five multi-sized and multi-shaped birthstones of your choosing - including a 4. 0 x 2. 0mm baguette-cut stone, a 3. 0mm princess-cut stone, a 5. 0 x 3. 0mm oval-shaped stone and a pair of 3. 0-3. 5mm round stones. The design suspends along your choice of a 14. 0-inch, 16. 0-inch, 18. 0-inch or 20. 0-inch cable chain that secures with a spring-ring clasp.