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Diamond is a standardized product, and its value is determined by its grade: diamond carat weight, color, clarity, cut 4C grade and fluorescence grade. Only diamonds that have undergone strict 4C grade and fluorescence grade evaluation can know its true value;
Diamond grading standards, detailed explanation of diamond grade comparison table pictures
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At the NATO Madrid Summit, Japanese Prime Minister Fumio Kishida and South Korean President Yoon Seok-yue also attended for the first time. Moreover, Biden also convened a tripartite meeting between the United States, Japan and South Korea.
For four awkward minutes, Japan and South Korea really faced each other like this
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Recently, the China Consumers Association conducted a comparative test on 25 electric toothbrush products sold on the Internet and found that the cleaning power and battery performance of toothbrushes vary greatly.
Evaluation of 25 electric toothbrushes: great differences in cleaning power, some are as noisy as a dental drill
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55 decibels is the sound of people talking normally, the sound of an alarm clock is about 80 decibels, and a chainsaw can even make 100 decibels of noise when it is working. When a jetliner is 100 meters above the ground, people can hear 130 decibels. The loud decibel sound, in f
Why is the loudest sound heard by humans 194 decibels? How terrible is it after exceeding 200 decibels?
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During the running process, it can improve cardiopulmonary function, prevent chronic diseases, and help improve the complexion of female friends. Modern medical research shows that the benefits of long-term running are not limited to what the eyes can see.
Does running for 40 minutes a day delay aging or accelerate it? It’s not too late to understand now
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During the decoration design process, we will all choose how to do sound insulation. No matter what, sound insulation has become an issue that must be considered when selecting materials for modern decoration. Stay away from noisy places such as schools and factories. Indeed, noi
Awkward! Is your house poorly soundproofed? Netizen: Fortunately, the child goes to bed early every night!
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Jimu News Reporter Zhang Pan Correspondent Jian Shuai On the evening of June 23, it was raining and there were not many pedestrians on the road. Ms. Peng, who had just gotten off work, was passing by Kaishi Village, Yuekou Town, Tianmen City when she came across a pair of elderly
The ancient couple took their grandson out on a rainy night and got lost, and they were protected by a light for 40 minutes.
05/23
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When people visit various jewelry stores, they will find that there are many kinds of diamond rings of different sizes and styles on the market, and these diamond rings will also have different price tags. So, among these many diamond rings, how big is a 1-carat diamond ring?
How big is a 1 carat diamond ring? Approximately at what price? has no meaning?
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The World Health Organization recently released a set of data. Currently, about 1.1 billion young people aged 12-35 around the world are at risk of irreversible hearing loss.
terrible! The “number one killer” of hearing loss turns out to be it
05/23
1949
Chest tightness, breathlessness, chest feeling like a big stone is pressing on it, hands shaking, unable to speak... However, if this happens in reality and continues to happen, then you must pay attention!
Taiyuan Central Hospital: No need to open the chest to "patch the hole", minimally invasive "patch the hole", repair the "heart wall" that has been missing for 52 years in 40 minutes
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History can be interesting, and knowledge is all around you. Daily Yibao will help you see through the long-standing secrets from the clues of cultural relics. The funerary monument to Philip Potter is a polychrome limestone statue decorated with gold and lead, 181 cm high, 260 c
A treasure of the day | Philip Porter’s funeral memorial
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The seat of Gloucestershire, this ancient city known as the Cathedral City, because of the blessing of Harry Potter's filming location, people remember this little-known but worth-seeing city.
What kind of magical appearance does the location chosen by Harry Potter have?
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As the most famous large-scale professional cross talk club in China, Deyun Club is well-known in the industry. Being able to enter Deyun Club is a dream for many people. However, there are also 5 former disciples of Deyun Club who have now been expelled from the division and lef
How are the five apprentices who were expelled from the school by Guo Degang doing now?
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In 2001, the Harry Potter film series began introducing fans around the world to the wacky and enchanting wizarding world, a community of wizards waving wands and casting spells.
The ten most powerful wands from the Harry Potter film series, all with specific ties to their casters
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The most striking thing about a country as vast as India is its richness, whether it is its diverse landforms, multiculturalism, multiculturalism,
India, it turns out there are these little-known world heritage sites!
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1840
More than 4,000 years ago in Egypt, 60 warriors were mysteriously executed on a cliff near Luxor. They were made into mummies, then thrown off the cliff and sealed in a secret room.
A secret chamber of mass burials of mummies was discovered in Egypt, and 60 warriors were mysteriously executed, hinting at the dark history of ancient Egypt
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1778
Site Latest News
History can be interesting, and knowledge is all around you. Daily Yibao will help you see through the long-standing secrets from the clues of cultural relics. The funerary monument to Philip Potter is a polychrome limestone statue decorated with gold and lead, 181 cm high, 260 c
A treasure of the day | Philip Porter’s funeral memorial
05/23
1686
The seat of Gloucestershire, this ancient city known as the Cathedral City, because of the blessing of Harry Potter's filming location, people remember this little-known but worth-seeing city.
What kind of magical appearance does the location chosen by Harry Potter have?
05/23
1167
As the most famous large-scale professional cross talk club in China, Deyun Club is well-known in the industry. Being able to enter Deyun Club is a dream for many people. However, there are also 5 former disciples of Deyun Club who have now been expelled from the division and lef
How are the five apprentices who were expelled from the school by Guo Degang doing now?
05/23
1984
In 2001, the Harry Potter film series began introducing fans around the world to the wacky and enchanting wizarding world, a community of wizards waving wands and casting spells.
The ten most powerful wands from the Harry Potter film series, all with specific ties to their casters
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The most striking thing about a country as vast as India is its richness, whether it is its diverse landforms, multiculturalism, multiculturalism,
India, it turns out there are these little-known world heritage sites!
05/23
1840
More than 4,000 years ago in Egypt, 60 warriors were mysteriously executed on a cliff near Luxor. They were made into mummies, then thrown off the cliff and sealed in a secret room.
A secret chamber of mass burials of mummies was discovered in Egypt, and 60 warriors were mysteriously executed, hinting at the dark history of ancient Egypt
05/23
1778