Here is a rewritten version of your text in under 500 characters, divided into clear paragraphs: Celebrate a special 90th birthday with this exquisite Tree of Life necklace. The pendant features a stunning blue crystal and measures 20mm by 20mm, crafted from solid 925 sterling silver for lasting elegance. The necklace comes with an 18-inch chain, offering a perfect fit. It serves as a heartfelt reminder of infinite admiration and love, making it an ideal gift for this milestone occasion. Please note this item is intended for ages 13 and up due to small parts. It is not suitable for children under 12. Each piece arrives beautifully presented in a square jewelry box, ready for gifting.