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Reviews & Guides by: grandgemstones( 25329)

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First to review: 0

Guides: 42

Helpfulness votes: 284 out of 290

Reviewer rank: 1364

42 guides found

Mohs scale of mineral hardness Grandgemstones
by grandgemstones( 25329)
The Mohs scale of mineral hardness characterizes the scratch resistance of various minerals through the ability of a harder material to scratch a softer material. It was created in 1812 by the German...
Tags: mineral | hardness | Corundum | Diamond | Topaz
105 of 106 people found this guide helpful
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Heated Treated "Lead Glass Filling" Ruby Treatments
by grandgemstones( 25329)
Treatments and enhancements Improving the quality of gemstones by treating them is common practice. Some treatments are used in almost all cases and are therefore considered "acceptable". During the late...
Tags: Ruby | Rubies | Gemstones | Treatments | Ruby Sapphire
19 of 20 people found this guide helpful
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Stone Treatment
by grandgemstones( 25329)
At Grandgemstones, we want our customers to buy with confidence. While most of our gemstones are untreated, we believe in disclosing treatments applied to our gemstones. To help you understand these...
Tags: Coating | Heating | Lasering | Irradiation | Diffusion
17 of 17 people found this guide helpful
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42 guides found

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