News - How to judge the quality of cubic zirconia?

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How to judge the quality of cubic zirconia?

time2023/12/16

: Judging the quality of cubic zirconia (Cubic Zirconia, referred to as CZ) can be considered from many aspects. Below I will detail how to judge the quality of cubic zirconia stone.

Appearance texture:

Glossiness:

A high-quality cubic zirconia stone should have a good glossiness, reflecting bright sparkle. Use a natural light source to see if it reflects light effectively.

I.Color:

Purity: High-quality cubic zirconia should have a full color and should not appear dark or too light. The color should be evenly distributed, with no visible banding or mottling.

Color selection: Cubic zirconia stones have rich color choices, including colorless, pink, blue, yellow, etc. According to personal preferences and needs, choose the color that suits you.

II.Clarity:

Internal impurities: A high-quality cubic zirconia stone should have no obvious internal impurities or cracks. It can be observed through a magnifying glass or microscope and checked for obvious black spots, white spots or mottling.

Clarity: A high-quality cubic zirconia stone should have a clear appearance and should not have obvious cloudiness or cloudiness.

III.Cut:

Symmetry: High-quality cubic zirconia stones should have good symmetry, and each face and edge should be symmetrically balanced. There are no apparent deviations or asymmetries.

Polish: A high-quality cubic zirconia stone should have a good polish, with a smooth, flat surface with no obvious signs of scratches or wear.

IV.Weight and size:

Weight accuracy: High-quality cubic zirconia stones should have accurate weight, and weighing equipment can be used to check whether the weight is consistent with the nominal value.

Dimensional consistency: High-quality cubic zirconia stones should have consistent dimensions, such as diameter, length, and width, and other dimensions should meet the standards.

V.Hardness:

Hardness Test: The hardness of cubic zirconia stones ranges from 8.5-9, which is very close to that of diamonds (10). It can be tested with a hardness testing tool (such as a Mohs hardness tester) to check whether it has a high hardness.

In addition to the above aspects, you can also refer to the following supplementary indicators and methods to judge the quality of cubic zirconia:

VI.Manufacturer reputation:

choose cubic zirconia stones from well-known and reputable manufacturers or brands. They usually strictly control the product quality to provide high-quality stones.

VII.Identification report:

Some professional gem identification institutions can provide gem identification reports, and judge the quality and authenticity of cubic zirconia stones through the detailed information in the report. For example, GIA (Gemological Institute of America) is a well-known gem identification agency.

VIII.Consult a professional:

If you are not sure about the identification and judgment of cubic zirconia, you can consult an experienced jeweler, gemologist or appraiser, who can give professional advice and judgment.

Transparency:

A high-quality cubic zirconia stone should have high transparency, without obvious impurities, prism effect or clouding. It can be observed on white paper to see if it is transparent and flawless

It is important to note that, despite its many advantages, cubic zirconia is still a man-made gemstone and cannot be completely equal to a natural gemstone. Therefore, when purchasing, you must clarify your needs and expectations, and choose suitable cubic zirconia products within a reasonable price range.

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