"NFPA 704: Standard System for the Identification of the Hazards of Materials for Emergency Response" is a standard maintained by the U.S.-based National Fire Protection Association. First "tentatively adopted as a guide" in 1960,[1] and revised several times since then, it defines the "Safety Square" or "Fire Diamond" which is used to quickly and easily identify the risks posed by hazardous materials. This helps determine what, if any, special equipment should be used, procedures followed, or precautions taken during the initial stages of an emergency response. It is an internationally accepted safety standard, and is crucial while transporting chemicals.
The four divisions are typically color-coded with red on top indicating flammability, blue on the left indicating level of health hazard, yellow on the right for chemical reactivity, and white containing codes for special hazards. Each of health, flammability and reactivity is rated on a scale from 0 (no hazard) to 4 (severe hazard). The latest version of NFPA 704 sections 5, 6, 7 and 8 for the specifications of each classification are listed below. The numeric values in the first column are designated in the standard by "Degree of Hazard" using Arabic numerals (0, 1, 2, 3, 4), not to be confused with other classification systems, such as that in the NFPA 30 Flammable and Combustible Liquids Code, where flammable and combustible liquid categories are designated by "Class", using Roman numerals (I, II, III).[2]
The development of NFPA 704 is credited to the Charlotte Fire Department after a fire at the Charlotte Chemical Company in 1959 led to severe injuries to many of the firefighters.[3][4] Upon arrival, the fire crew found a fire burning inside a vat that firefighters assumed to be burning kerosene. The crew tried to suppress the fire, which resulted in the vat exploding due to metallic sodium being stored in the kerosene. Thirteen firefighters were injured, several of whom had critical injuries while one lost both ears and most of his face from the incident.
At the time, such vats were not labelled with the materials they contained, so firefighters did not have the necessary information to recognize that hazardous materials were present, which required a specific response. In this case, sodium was able to react with water to release hydrogen gas and large amounts of heat, which has the potential to explode.
The Charlotte Fire Department developed training to respond to fires involving hazardous materials, ensured that protective clothing was available to those responding, and expanded the fire prevention inspection program. Fire Marshal J. F. Morris developed the diamond shaped placard as a marking system to indicate when a building contained hazardous materials, with their levels of flammability, reactivity and health effects. [5]
Recognized by the Gemological Institute of America and The American Gem Society as an advanced cutting technique, the Facets of Fire technology is protected by six national and international patents. The latest US Patent No. 10,893,727 obtained in 2020, confirms this technology is unique and different from anything previously patented or available to the public.
You may also rest assured that every Facets of Fire Diamond is ethically sourced, conflict free and naturally mined, adhering to the strict global standards of the Kimberly Process and the Responsible Jewellery Council, both dedicated to eliminating all conflict diamonds.
Lab-grown diamonds are diamonds that grow in a controlled environment inside a laboratory. Although they are not naturally grown diamonds, they are as real as the diamonds mined from the earth. They are also recognized and even have certifications from prestigious organizations.
Hearts on Fire boasts its perfect cut as their trademark for their diamond jewelry. It is an exquisite choice for celebrities, lovers, and clients who want a natural and brilliant diamond for themselves or their loved ones.
Hearts on Fire diamonds are known and marketed as "World's Most Perfectly Cut Diamond." It is a bold statement, but they back it up with their rigorous process using their in-house formula and new technology.
The cut is the most important of the 4Cs (carat, color, clarity, and cut) in a diamond when it comes to sparkle and beauty. With Hearts on Fire's proprietary cut, they consistently produce diamonds that are brighter and sparkle better than other diamonds. Their patented cut enhances the diamond's color and clarity.
The brand name comes from the eight flawless "hearts," which you can see at the top. Meanwhile, the "fire" comes from the starburst arrangement visible at the bottom of the diamond. Combining these two designs creates the uniqueness of the Hearts on Fire Diamond.
Hearts on Fire are natural and genuine diamonds. These crystals undergo a rigorous process and standards to filter and take only the purest and finest rough crystals. Because of this, only 1/10 of 1% of the rough diamond crystals in the world can become a Hearts on Fire Diamond.
After choosing diamonds, they use vibration-free cutting wheels to cut and polish them, following the ideal proportions and symmetry. They polish these diamonds at 100x magnification, which is ten times what the industry requires.
All the diamonds from Hearts on Fire are naturally-mined crystals guaranteed to be conflict-free. They source them ethically and responsibly from Angola, Botswana, Canada, Namibia, Russia, and South Africa. They fully follow and comply with the Kimberley Process.
Fire refers to how well the diamond displays the colored light. A diamond with a rainbow-like appearance, like Hearts on Fire, is because the proportions from the diamond's top and bottom are correctly balanced. Otherwise, they will have a flat and dull appearance because they cannot reflect colored light properly.
The last element is scintillation, which refers to how well the diamond reflects light during movement. If there is high scintillation, it means the diamond has few spots where there is no sparkle. Additionally, a well-cut diamond, such as Hearts on Fire, has a surface area that produces a visible spark.
Aside from brilliance, fire, and scintillation, polish is also one factor to consider because it affects the diamond's ability to absorb, refract, and reflect light. The more polished and transparent a diamond is, the more sparkle it will have. That is why Hearts on Fire polishes its diamonds more than the industry standard.
American Gem Society (AGM) is a preeminent jewelry trade organization dedicated to protecting consumers by helping them know what they are buying. They evaluate each diamond and grade it based on its qualities and components. They also generate a report that includes details from cut quality to the carat weight.
The clarity ratings range from Flawless (absolutely no inclusions) to Slightly Included (slight characteristics not visible to the naked eye but visible under 10x magnification) on Hearts on Fire diamonds. So, you will not have to worry about seeing a major inclusion in your diamonds.
On the other hand, an ideal rating is very rare, with only about 3%-5% of diamonds in the world gaining this rating. A rating from AGM is reliable and valid, indicating that a Hearts on Fire diamond has a quality cut.
Hearts on Fire also provide state-of-the-art tools and technology to help craftspeople become more precise and faster in their work. Their newest technology is water-jet technology that cuts diamonds in 15 minutes rather than 4-6 hours with only 1-2% weight loss compared to 3-5% with the diamond saw.
Hearts on Fire values their customers as much as they love their diamonds. While they have a warranty for defective products, they encourage their customers to get insurance for their jewelry.
But that is totally worth it because it has wide coverage compared to other jewel insurance. Their insurance policy includes, but is not limited to, worldwide coverage while traveling, protection against theft, loss, damage, and even disappearance, and repair and replacement.
If you have other jewelry in mind, do not worry because Hearts on Fire provides you with a Documentation of Purchase. You can give your insurance company a copy of this documentation and keep the original one. Your insurance company might add a rider to your policy and charge you annually.
Diamonds are precious pieces that can have sentimental and financial value. Before buying one, you must know the brand, diamonds, products, and reviews to understand what you are getting into and what you are buying for.
In this article, we have examined Hearts on Fire Diamonds. Their prestige brand mines diamond responsibly and pick only the finest crystals for their collection. They deliver their trademark of having a diamond with an impeccable cut.
You can purchase one from their authorized jewelry stores, such as C.D. Peacock, a Chicago-based jewelry company established in 1837. They are a prominent international jeweler that offers fine diamonds, jewelry, and gifts at a fair price.
All right, this is just me being me, but I have to say that I find it pretty amusing that the image which Hearts on Fire decided to post on their web site to represent the quality of their hearts and arrows patterns, featured on the page titled Proprietary Cutting Formula exhibits a hearts pattern which is not as precise as I expect it to be.
In order for the two reflections consisting of half a heart each, to appear as one heart on the opposite side of the diamond, the indexing of the pavilion main and lower girdle facets must be absolutely perfect. Otherwise you will see variations in the pattern like those visible in the photograph above which somebody at Hearts on Fire decided to make the flagship for their diamond brand.
I hate to say it, but the hearts pattern of that particular Hearts on Fire Diamond is FAR FROM PERFECT. It is however better than the hearts pattern displayed by the majority of round brilliant ideal cut diamonds which are not cut specifically to exhibit a crisp and complete pattern of hearts and arrows.
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