It appears to have been caused by the pressure of the internal crystal growth

" named after the alexandrite gemstone

though typically found with a deep blue streak running down the middle

4 - 7 grams / 0

Bead Size: 6

Zircon | 7 Piece Lot | Oval Cut | White | 2.4tcw | SO24 Ataxite It appears to have beenProduct Type: White Zircon Approx Weight (per lot): 2. 4tcw Size: 5x3. 3 4. 4x2. 9mm Shape: Oval Cut Color: White Clarity: Clean Origin: Africa Zircon comes in a variety of colors, including blue, yellow, green, brown, and red, and is renowned for its exceptional brilliance. It is found in many locations worldwide, including Sri Lanka, Myanmar, Cambodia, and Australia. Some of the oldest zircon crystals have been dated to be over 4 billion years old,