What is the hardest type of rock?

Granite

Who can identify my rock?

Can you identify my rock or mineral?

Your state geological survey.
A natural science museum.
A college or university with a geology department.
A rockshop.
Members of a local Gem & Mineral club or Rockhunting club (many hobbyists are experts at identification)
Vendors at a Gem & Mineral show.

What’s the rarest rock?

painite

Are crystal rocks worth anything?

Generally speaking of Arkansas quartz, the lack of color, rather than being milky, makes the value of the crystal increase. Size (or Carat) In both common and rare minerals, size usually does matter. As rocks are (generally) more abundant than crystal, semi precious stones are not that valuable.

How can you tell a black rock?

Look for glossy black or dark green crystals and cleavage fragments forming flattened prisms in cross-section (corner angles of 56 and 124 degrees). Crystals may be short or long, and even needle-like in amphibolite schists. Characteristics: Glassy luster; hardness of 5 to 6.

How can you tell if a rock is expensive?

Hiking through the woods or strolling along the beach, you may see an unusual rock, and – if it’s your lucky day – the rock may be valuable. To determine if it has monetary value, test it for color and hardness, and inspect it for surface markings that may identify it as a meteorite.

Can you use regular rocks in a rock tumbler?

most types of rocks do not perform well in a rock tumbler. If you mix great tumbling rough with rock that is below tumbling grade, particles, sharp edges and breakage of the below-tumbling-grade material will probably ruin the polish on every rock in the barrel. So, choose your tumbling rough carefully.

Is there an app that can identify rocks?

The KamenCheck and the RockCheck apps are available for free on the Google play store and are adapted for use on Android devices (soon also planned for iOS).

What is the best rock identification app?

Best Rock and Mineral Identification App for 2021

Smart Geology- Mineral Guide. The Smart Geology- Mineral Guide is going to be your best option when it comes to looking for high quality, free rockhounding apps.
Minerals guide: Rocks, Crystals & Gemstones. According to the official app description:
Geology Rocks – Handbook of Rocks.
Geology Toolkit Premium.

How do I identify a rock I found?

Rock Composition The minerals comprising the rock can be identified using common field testing methods for individual minerals, particularly where the texture is sufficiently coarse-grained enough to distinguish the individual minerals with the naked eye or a hand lens.

What type of rock is a river rock?

The most common river rocks used in landscaping and decorative construction are made of granite. Granite belongs to the “intrusive” category of igneous rock, which means it formed below the earth’s surface as magma slowly cooled and crystallized.

How do you classify rocks?

Generally rocks can be divided into three major types based on the process of their formation. These are; Igneous rocks, sedimentary rocks and metamorphic rocks.

What is the easiest mineral to find?

Mica is one of the easiest to identify of all minerals because it occurs in flat sheets, like fused-together sheets of cellophane or glass. Often thin sheets of mica are easy to separate from one another — they easily exfoliate.