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wholesale plain ear plugs for making jewelry A few carats of diamonds are a sign of weight, indicating the quality of the diamond.
The diamonds are calculated in carats. The mark is CT, one carat = 100 points, and one carat diamond weighs 0.2 grams. If the diamond weighs 30 points, it means that the diamond is 0.3 carats. This shows that "what does diamond mean" is actually describing the weight of diamonds. That is Carat.
E every thing there is a unit, and the diamond unit is represented by a position. One gram is about 0.2 grams, and the one -carat diamond can be divided into 100 points. If it is half, it is 0.5 carats, and it can also be said to be a 50 -point diamond. This is usually used to represent a small diamond. Essence
The larger the diamond, the more rare, and the higher its value. From about 1907, the measurement unit of GM has been used internationally internationally, and it is still used so far.
Extension information:
The meter -
1 carat = 200 mg = 0.2 grams. In the old gem book, one carat is about 205.3 mg. If it is converted to the current carat, one carat must multiply 1.0265. Here is just a rough saying that the carat value in the old countries or regions is different.
Diamonds with a weight of less than 1 carat usually use "points" as a measurement unit, 1 carat = 100 points. In the diamond certificate, the weight of the diamond is accurate to the third place after the decimal point.
igi uses an electronic balance with an accuracy of 0.00001 carat, which is called accurate diamond weight. The diamond weight is recorded in the diamond appraisal report and accurately reaches two digits after the decimal point. So a 25 -point diamond weighs 0.25 carats. Diamonds of the same quality, the larger the weight, the more precious.
Reference materials: Baidu Encyclopedia-Crathi
artificial jewelry wholesale rate A few carats of diamonds are a sign of weight, indicating the quality of the diamond.
1. For calculation relationship: 1 carat (CT) = 0.2 grams (g), 1 carat = 100 points, for example: 0.80 carats are 80 points, which is 0.16 grams.
2. The origin of the name: Clarks, also known as Kaka, Kara, English cact, abbreviated "CT", international universal, since the international agreement in 1907 as a gem metering unit. It is the quality unit of gems such as Zhuyu and Diamonds.
The word carat, derived from the carat "keration" in Greek, refers to long -horn bean trees (or rice bean carobseed), which is a plant widely popular from East Asia to the Middle East. Because its fruits are called nearly consistent weight (equal to 205.3 mg), early long -horn bean trees were used as a weight unit for jewelry and precious metals. One carat was equal to the weight of a small horn tree (before 1907).
"points" is mainly for merchants to make it easy to name. The weight of the zero top reading always feels inappropriate.
The diamonds smaller than "1 point" are called consolidated diamonds, which are generally used for micro -setting, 1 point = 10 %.
3, carat diamond (big diamond), medium diamond, small diamond, broken diamond: carat diamond (big diamond): weight greater than 1 carat, which belongs to large diamonds, mainly used as rings and pendants.
Drills: Weighing 0.25 to 1 carat, mainly used as necklaces, bracelets and brooches.
Small diamonds: The weight is 0.1 ～ 0.24 carats, which are mainly used as a group inlaid for clothing or other gem rings.
Drills: less than 0.1 carats, that is, less than 10 points, for micro -setting.
4. Measurement method: The weight of the diamond is the easiest characteristic of 4C to measure. The standard weighing instrument is used, and the various accuracy reaches 0.0001g balance. As long as you follow the operating procedures, you can get accurate results.
Sub -commercial, the quality of the diamond carat must be marked to the second place after the decimal point, and the third place after the decimal point is implemented every nine -in -one rules. Numbers below 8 and 8 are ignored. For example, when weighing 0.898CT, when the valuation is calculated, only 0.89ct is calculated; and if weighing 0.899CT, it can be priced at 0.90CT. This is different from the usual "four houses and five entry".
5, carat diamond and size: standard round cut (different cuts, shapes, size are different):
1 carat diamond diameter is 6.49 mm;
0.5 carat diamond diameter is 5.15 mm;
0.1 carat diamond diameter is 3.01 mm;
6, carat, division and diamond value: diamond color, clarity, cutting indicators consistent In the case (pay attention to this premise), the larger the diamonds of carats, the more precious the diamonds that are welcomed by more people are 0.3-0.5 carat diamonds, that is, a circular diamond between 4.34mm-5.15mm in diameter.
The core of the value of diamonds is the "4C" indicator, which refers to the weight of the diamond, color, clarity, and cut (CUT). In addition, "milk coffee green" and other indicators.
Carat (cact): slightly
color (color): diamonds have a variety of natural colors, colorless (white), rare light blue, pink to common yellowing. The more transparent, the more white can penetrate, and the more colorful after refraction and color. The color of ordinary diamonds from high to low is D, E, F transparent colorless; G, H is close to colorless; i and j are close to white slightly yellow, and they are getting yellow downward. Note: There are other standards for color diamonds.
Clarity: Diamond clarity from high to low is FL, professional diamond hierarchist 10 times the large mirror in the inside and outside the inside and outside perfect, IF professional diamond grading division 10 times the internal internal and indifferent internal inside, VVS1, VVS2 professional Diamond hierarchical divisions 10 times the extremely mild flaws under the large mirror, VS1 VS2 professional diamond grades 10 times mild flaws, Si1 and SI2 professional diamond hierarchical divisions under 10 times the large mirror, there are flaws under the large mirror, but the SI level is the naked eye with the naked eye No time.
The cut (CUT): Diamond cutting from high to low is perfectly cut in order, VG is very good cut, and G good cut.
african hair jewelry wholesale Cera is the evaluation of diamond 4C standards. It is used to measure the weight unit of diamonds. Carat can be called Kara or Kaka. It is the measurement unit of diamonds. N
The word carats began in Greece. Clarks refers to a widely popular plant in East Asia to the Middle East, called long -horn bean trees, and some people call it rice beans. It is almost the same, so the fruits of this plant were used as units that measure precious metals and jewelry;
and what you said refers to the name of less than 1 carat, 1 carat = 1 carat = 1 carat = 1 carat = 1 carat = 1 carat = 1 carat = 1 carat = 100 points, 20 points, 30 points, 40 points, 50 points, and 100 points are rarely described as less than 100 points (JD Dr. Jewelry answered)
johns wholesale jewelry There are four main standards for diamonds. We call it "4C", cact, color, cut (cut), clarity.
: Diamonds are calculated according to carats. Carat is a measuring diamond weight unit, 1 carat = 0.2 grams, 1 carat = 100 points.
It color: Diamond color starts from D color (extremely white), E, F, G, H, I, j ...
Cut Grade, Polish, Symmetry. These three rats are from Excellent (EX), VERY Good (VG), Good (G), FAIR, POOR.
Cleecent: In the GIA certificate, the clarity rating is from Flawless (FL), Flawless (IF), Very Very Slight (VVS1, VVS2), Very Slight (VS1, VS2), Slight (SI1, SI2), Imperition (I1, i2, i3)
http http://www.jwholesale.com fashion-jewelry-wholesale s_idx 40661 Cra (CT) is the quality (weight) unit of gems, and 1 carat is now equal to 0.2 grams or 200 mg. One carat is divided into 100 points, such as 50 points, which is 0.5 carats, to calculate a small gem. Because the density of gems is basically the same, the heavier gems, the larger. The larger the gem, the more rare, the higher the value of each carat.