Below is a brief summary of the information available in the provided sources:
Summary of Available Information
The sources describe a collection of "modern heirloom" birthstone rings crafted from solid 14k gold (available in Yellow, White, or Rose Gold) by retailers such as HAVERHILL, Gelin Diamond, and Iskra Jewelry. The marketing emphasizes personalization, sentimentality, and the ability to stack rings for a unique style. The collection includes approximately 13 to 40 products, with prices ranging from $564.71 to $1,835.29. The sources confirm the use of genuine gemstones but do not specify the types of gemstones used or any of their characteristics.