In Jain Dharma, wearing gemstones is generally not considered necessary for spiritual progress.

Jain teachings emphasize:

• Ratnatraya: right faith, right knowledge, and right conduct
• Ahimsa, Aparigraha, and inner purity
• Self-discipline, meditation, and vows

A gemstone does not remove karma or replace spiritual practice. If someone wears it only for fashion or worldly reasons, it should be understood as a personal choice, not a Jain spiritual requirement.

From a Jain perspective:

• Do not depend on gemstones for protection, luck, or liberation
• Focus on faith, vows, restraint, and right conduct
• Avoid attachment and superstition

So the simple answer is: Jains do not need to wear gemstones for religious reasons, and spiritual growth in Jainism comes from soul-purification, not stones.