Gemstone treatment
Flux Healing, Corundum
Partially healed fractures may contain glassy flux residue, whitish fingerprints, or reflective areas following fracture planes. Residue can appear in surface-reaching fissures or internal healed zones.
01
What to look for
Partially healed fractures may contain glassy flux residue, whitish fingerprints, or reflective areas following fracture planes. Residue can appear in surface-reaching fissures or internal healed zones.
02
What it means
Flux healing uses high temperature and flux to partially heal fractures in corundum. It improves apparent clarity and must be disclosed.
03
Expert move
Look for flux residue along fractures and around healed areas. Do not confuse natural fingerprint inclusions with treatment-related flux residues.