Zincite (zinc oxide)

Color: Orange, red and yellow, leek-green, light blue to colorless. Moh’s Hardness: 4-4.5
Refractive Index: 2.02
Critical Angle: 29.67°
Specific Gravity: 5.6
Cleavage: Perfect
Fracture: Subconchoidal, brittle
Dispersion: Moderately high to strong.
Heat Sensitivity: Low
Birefringence (double refraction): Medium (.016)
Crystal Structure: Hexagonal

Treatments: None

What I prefer to polishing with: Tin lap with Alumina oxide. Zinc laps with 8,000 pre-polish and 50,000 polish. Specta Ultalaps work pretty well. It tends to scratch and chip during polishing and can be problematic.

Jeff's Comments: Zincite is brittle, so be careful not to shock the stone while cutting and use fine laps for roughing in.

Design Links:
4-Way Stop - This is great for saturated rough if you have a piece that will work in the shape...

Man-Made Links:
Synthetics - Index of Synthetic / Man-made Rough

Alexandrite - Man-made

Beryl - Index to Beryl
Bixbite - Hydro thermal red Bery
Emerald - Hydro thermal green Beryl

Cubic Zirconia - Index to Cubic Zirconia
Aqua
Blue
Clear/White
Golden/Topaz
Lavender
Peach
Pink
Red

Color Change CZ
Light blue to Lilac/Pink
Blue to Teal
Tabacco to Pink/Orange
Peridot Green to Gold Beryl
Pink to Lavender

Quartz - Index to man-made Quartz
Amethyst (med) - man-made Amethyst
Ametrine - man-made Ametrine
Colorless - White, clear Quartz
Light Blue Quartz - man-made Quartz
Swiss Blue Quartz - man-made Quartz
Ceylon Blue Quartz - man-made Quartz
Citrine - man-made Citrine
Medium Citrine - man-made Citrine
Madeira Citrine - man-made Citrine
Green Quartz - man-made Quartz

Sapphire (Corundum) - Index of Man-made Sapphire Rough
Burma Pink - Man-made Sapphire boules
Ceylon Blue - Man-made Sapphire boules
Color Change - Man-made Sapphire boules
Cranberry - Man-made Sapphire boules
Fusia - Man-made Sapphire boules
Light Fusia - Man-made Sapphire boules
Lemon - Man-made Sapphire boules
Imperial - Man-made Sapphire boules
Padaparadschah - Man-made Sapphire boules
Ruby - Man-made Sapphire boules
Tanzanite - Man-made Sapphire boules
White/Clear - Man-made Sapphire boules

Spinel - Index to man-made Spinel
Ceylon Blue - Top Sapphire color
Colorless - White, clear Spinel
Swiss Blue - Blue Spinel
London Blue - Rich blue Spinel
Yellow/Green - Chrysoberyl colored Spinel

YAG (man-made Garnet) - Index to YAG
Colorless - White, clear YAG
Green/Teal - Green/Teal YAG
Green - Nice kelly green
Hot Yellow - Chrysoberyl color YAG
Pink - Pink YAG
Tanzanite - Blue/lavender

Rutile - Man-made Rutile
Strontium Titanate - Man-made Strontium Titanate
Tsavorite Garnet Simulant - Green Garnet Simulant
Zincite - Man made Zincite in all color, green, yellow, red, orange

Return to Synthetics Information Index

E-mail to inquire or order: jeff@faceters.com