This Presidium® tester uses thermal and electrical conductivity to differentiate diamonds, moissanite and simulants. It works quickly, so there’s no waiting time. Its small size makes it comfortable to use.
• Operates on three AAA batteries (not included); an AC adapter is available.
• Retractable tip.
• Auto shut-off; low-battery indicator.
• New easy-to-read LED readout; metal alert.
• Two-year factory warranty.