4 mm Round Cabochon Blue Chalcedony

Type: Natural Chalcedony

Gem Species: Chalcedony

Color: Blue

Shape: Round

Size: 4 mm

CT Size: N/A

Quality: Standard

Quality Description: Light to medium powder blue; translucent to opaque; medium dome

Cut: Cabochon

Month for Birthstone: N/A

Enhancement Code: Natural

Hardness: 6.5-7

Refractive Index: 1.535-1.539

Specific Gravity: 2.60

Optic Character: Aggregate

Phenomena: None

Care: Protect from scratches and harsh blows. Gently scrub with soft brush and warm soapy water.

Ultrasonic Reaction: Usually safe

Steamer Reaction: Usually safe

Chemical Reaction: Hydrofluoric acid

Heat Reaction: Fair to Poor - May cause color change