Minerals.net
Complete Information Guide to Rocks, Minerals, & Gemstones
Minerals
Minerals & Varieties
View All Minerals
View by Alphabetical Order
Varieties and Other Names
Mineral Search
Filter Minerals
Filter by Chemical Group
Filter by Color
Filter by Streak
Filter by Hardness
Filter by Crystal Group
Most Visited Minerals
Quartz
Diamond
Pyrite
Gold
Fluorite
Amethyst
Gypsum
Calcite
Galena
Talc
Gemstones
Gemstones
View All Gemstones
Gemstone Varieties
This Month's Birthstone
Diamond
Gemstones By Color
Metallic
White
Colorless
Blue
Red
Green
Yellow
Orange
Pink
Purple
Banded
Multicolored
Most Visited Gemstones
Ruby
Sapphire
Topaz
Agate
Garnet
Quartz
Tourmaline
Jasper
Zircon
Emerald
Research
What is a Rock & What is a Mineral
Mineral Properties
Color
Streak
Hardness
Specific Gravity
Luster
Cleavage, Fracture
Tenacity
Chemical Properties of Minerals
Birthstones
Top 5 Tips for Diamond Buying
Trends in Mineral Collecting
All Research Topics
Q&A
View Posted Questions
Ask A Question
Most Popular Questions
Newest Questions
News
News Blog
Twitter News Feed
Follow us on Pinterest
Glossary
Photo Gallery
Gallery Home
Mineral Photo Gallery
Gemstone Photo Gallery
Videos
View All Videos
View Minerals.net Videos
View Our YouTube Channel
Directory
Add Your Free Listing
Gemstones
Mineral Dealers
Online Reference Sites
Mineral Publications
Museums
Gemstone Blogs
Gemstone Show
Advertising Information
Contra Luz Opal
Opal
where the play of color is visible only when a light source is behind the stone.
< Back
