A beautiful Paraiba tourmaline! With its vibrant greenish-blue color and oval shape, this gemstone is truly a treasure. Here are some details about your stunning Paraiba tourmaline:

- Carat weight: 0.35 carats (a delicate and elegant size)

- Shape: Oval

- Measurements: 5.8 mm (length) × 4 mm (width) × 2.1 mm (depth)

- Color: Greenish-blue (a unique and coveted color, characteristic of Paraiba tourmaline)

- Cut: Oval shape, designed to maximize the gemstone's natural beauty

- Clarity: Probably eye-clean or with minor inclusions, as Paraiba tourmaline is often relatively clear

Paraiba tourmaline is considered one of the rarest and most valuable types of tourmaline, prized for its vibrant greenish-blue color. The oval shape and 0.35-carat weight make this gemstone perfect for a delicate ring, pendant, or earrings. The measurements suggest a slender, elongated shape, adding to its elegance.

As Paraiba tourmaline is a relatively hard gemstone (7-7.5 on the Mohs scale), it's suitable for everyday wear. This gemstone is a true treasure, and its unique color and oval shape make it a standout piece in any jewelry collection!