Inside America's largest diamond processing factory

The rough diamonds underwent elaborate and elaborate stages to molt into sparkling gemstones attached to jewelry.

Diamond District (also known as Diamond District) located on Street 47 between New York's 5th and 6th boulevards, including many sparkling diamond shops attracting the attention of every passerby, according to Business. Insider.

However, behind the strict security system and locked doors like labyrinths in Manhattan town center are diamonds checked, honed and polished.

Ritani, an online diamond retailer, is one of the famous diamond brands with a factory located in New York City.This is also the largest diamond factory in the US owned by Julius Klein Group.

Diamonds before coming to the factory are rough unprepared blocks.Yellow diamonds in the picture are being checked.

To create the most valuable diamonds from rough stones, their small pieces are examined and explored, creating a 3D version for source analysis.

Then they are trimmed before forming.Workers will consider many different factors, including holes and weight of stones.

Some stones will be cut into 2 separate tablets.How to cut diamonds depends on the market.

According to Keeney, princess-style round diamonds and stone beads are still the best-selling products.

The quality and price of a diamond depends on 4 colors, trimming, transparency and carat weight.

After the stone is determined the shape to be cut, it is transferred to the laser cutter to create the most accurate cut.This process lasts 3 hours because precise cutting at once requires a thorough process.

Next, the cut diamonds will be transferred to the processing room.Here, artisans will cut carefully to create a masterpiece.

Diamonds are placed in a tool called "tang" to keep it shiny.These "mourners" will then be brought to a rotating disc covered with diamond dust.

Artisans can put diamonds on the disk by hand or use a mold machine to push diamonds from the "mourning" into the diamond dust spinning disc, making the diamond surface always sparkling.

Diamond trimming can last from several weeks to several months, depending on size, shape and the entire polishing process.A round diamond can have up to 58 sections, creating maximum sparkle.

The world's most valuable and rare diamonds may take up to a year to prune and craft.

After the cutting and polishing process is completed, diamonds continue to be brought to the polishing machines of the edges and ensure their shape.

After the final polishing process, diamonds are thoroughly tested according to the US GIA standards before being certified.