At RockZ, we use a practical grading system to help wholesale buyers understand the quality and natural characteristics of our crystal products.
Natural crystals vary significantly from one material to another. For this reason, our grading system is used as a general quality reference rather than an absolute industry standard.
Our internal grading system ranges from B, Standard, A, A+, to A++. To keep our product listings simple and easy to understand, we use three customer-facing labels:
Standard Selection | A+ | A++
Our Customer-Facing Labels
Standard Selection
Standard Selection is our customer-facing label for products within the B, Standard, or A quality range.
These products are not individually labeled with a specific grade on our website. Instead, they are grouped under Standard Selection to provide a simple and consistent way for buyers to understand our product listings.
Standard Selection does not mean low quality. It simply means that the product has not been specifically selected and labeled as A+ or A++.
Because natural crystals have natural variations in color, clarity, inclusions, texture, and shape, we recommend evaluating Standard Selection products based on the actual product images and description.
Our Internal Grading System
B Grade – Below average quality
B-grade products are below the typical quality level we look for when selecting natural crystal products.
They may have more noticeable characteristics such as:
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Lower clarity or luster
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Uneven or less consistent color
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More visible inclusions or surface imperfections
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Less consistent shape or symmetry
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Other noticeable natural characteristics that affect overall appearance
B-grade products can still be suitable for certain applications where appearance requirements are less strict or where price is a primary consideration.
Products within the B range are included under our Standard Selection label on our website.
Standard – Suitable for materials without grade variations
This grade typically applies to most agate, chalcedony, and jasper materials. Crystals with particularly exceptional characteristics may be classified as A+ or higher.
Standard-grade materials generally do not have meaningful grade variations within the material category. Their natural characteristics, such as color, pattern, inclusions, or texture, are considered part of the normal appearance of the material.
Products within the Standard range are included under our Standard Selection label on our website.
A Grade – Good quality
A-grade materials generally represent good overall quality within their respective material category.
Depending on the type of crystal, A-grade products may show desirable characteristics such as attractive color, good shape, reasonable clarity, or a balanced overall appearance.
However, because different crystal materials naturally have different characteristics, A grade does not represent exactly the same visual standard across every material.
Products within the A range are included under our Standard Selection label on our website.
A+ Grade – High quality
A+ products are selected from the higher end of our quality range and demonstrate more desirable natural characteristics.
Depending on the material, these characteristics may include:
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Better clarity or transparency
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More attractive or consistent color
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Better shape and symmetry
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Fewer visible imperfections
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Stronger overall visual appeal
The specific characteristics of an A+ product may vary depending on the type of natural crystal.
A++ Grade – Exceptional quality
A++ represents the highest level within our standard grading system.
These products are selected for exceptional natural characteristics and outstanding overall appearance.
Depending on the material, A++ products may feature:
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Exceptional clarity
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Strong and attractive color
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Excellent shape and symmetry
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Minimal visible imperfections
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Outstanding overall visual appeal
A++ products are relatively uncommon and are selected when the material demonstrates particularly desirable natural characteristics.
Premium Grade
Premium is a separate designation from our standard B–A++ grading system.
It is reserved for carefully selected jewelry-grade materials intended for fine jewelry applications.
Premium does not simply represent a higher level than A++. Instead, it identifies materials selected specifically for jewelry use, where factors such as clarity, color, cutting potential, and overall material quality are particularly important.
How to Evaluate Natural Crystal Quality
Natural crystal grading is not a universal, standardized system across the industry. Quality can also vary significantly between different materials.
For this reason, a grade should be used as a general quality reference rather than an absolute measurement.
At RockZ, we recommend considering the product label together with the actual product images and description.
For Standard Selection products, the product images are especially important because natural variations in color, clarity, inclusions, texture, and shape may occur.
For A+ and A++ products, the label indicates that we have specifically selected the material for its higher overall quality and visual characteristics.
Our Grading Approach
Our internal grading system helps us evaluate the quality of natural crystal products, while our website uses three simple customer-facing labels:
Standard Selection → B / Standard / A quality range
A+ → A+ quality
A++ → A++ quality
Premium → Separate jewelry-grade designation
This approach allows us to maintain a practical internal grading system while keeping our product listings straightforward for wholesale buyers.
Because every natural crystal is unique, we encourage buyers to review the product images and descriptions carefully when evaluating a product.
