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Gem magnifier and tweezers

      The biggest advantage of gemstone magnifier and tweezers is their low cost, portability, and ease of operation. They are basic gemstone instruments for jewelry professionals and are...

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Gemstone Microscope

The gem microscope is one of the most important instruments in gem identification. Its main purpose is to magnify and observe the internal and external features of gemstones. Features that...

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The most beautiful gemstone

Every gem is a gift from nature. Let us appreciate the most beautiful gems in the world!   Calcite as beautiful as a piano!   Malachite that looks like a...

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How to identify Chrysoberyl

               Chrysoberyl introduction   Figure 1 Various chrysoberyls Chrysoberyl is named for its unique yellow-green to golden-green appearance and is famous for its special...

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How are pearls identified?

Pearl Introduction    Figure 1  Various pearls The name of pearl comes from Latin, which means “the pride of the sea”. Pearls are different from other gemstones. They are round,...

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Diamond quality evaluation

Diamond quality evaluation The quality of diamonds is evaluated mainly from four aspects: carat weight, color, clarity and cut. Since the names of these four factors all start with “C”, they are referred to as 4C grading. Carat Weight Carat is the unit of weight of diamonds. 1 carat = 200 mg. Carat (ct) is […]

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Chelsea Filter

The Chelsea filter is the most commonly used filter in gem identification, also known as the “emerald filter”.This filter was first used at Chelsea Industrial School, hence the name “Chelsea...

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