How big is a carat tanzanite and how big is a 1 85 carat sapphire

It is generally irregularly shaped, about 5 mm of balls so big that 1 carat is equal to grams, carat is the basic unit of diamond, English carat, usually abbreviated as gram is equal to 5 carats, 1 carat is equal to 100 points, people often say 30 points of diamonds, 20 points of diamonds, 50 points of diamonds, it can also be said to be carat diamonds, carat diamonds and so on. Since diamonds with a customary weight of less than 1 carat are also usually measured in points, a few hundredths of a carat is a few "points". The ** of diamonds is generally more expensive, and the cheapest diamond with 30 points is also about 3000, so on the diamond's certificate, the weight of the diamond is accurate to the third decimal place.

Is the landlord asking about volume? The density is about 60 cubic millimeters per cubic centimeter, 1 clar gram, and about 60 cubic millimeters (the size of a cube of 4 x 4 x 4 millimeters), you can calculate it yourself according to the weight, Tanzanite blue is a world-recognized sapphire-like sapphire. This gemstone was first discovered in 1967 in the Arusha region at the foot of the equatorial snow-capped mountains.

In honor of the then newly formed United Republic of Tanzania, it was named Tanzania Blue. The Chinese gem industry has the following to say about it: "Tanzanite, gem-quality zoisite, is a calcium-containing aluminum-containing silicate with the chemical formula Ca2Al3Si3O12(OH)."

Unheat-treated zoisite is pale reddish-purple, pale yellow-green, and blue, and heat-treated zoisite is purplish-indigo. Hardness 6, density, refractive index, birefringence. The similarity between zoisite and sapphire is the color of indigo, the difference is:

The indigo color of zoisite is bright and uniform, and no color bands or growth lines can be seen; The pleochroism is obvious, and there are purple, green, and blue colors from different directions, and purple-red colors can be seen in a certain direction; The hardness is low, and it can be cut with a file. Zoisite is the newest gemstone variety to emerge and is loved for its beautiful color. In fact, only top-of-the-line and A-grade tanzanites have all the characteristics mentioned above.

Grade B Tanzanite is a deep purple with less color variation, while Grade C is light purple with only shades of color when viewed from different angles. But all grades of tanzanite are the same in terms of crystalline, purity and refractive index. Moreover, as a finished product, even if it has color characteristics, if it does not meet the requirements in terms of material, cutting, and polishing, it is impossible to have the corresponding grade.

Hope it helps.

In the case of the same weight, the size of the front of the gemstone will be different according to the length, width and height, but tanzanite is generally cut short and fat due to fragility, and one carat is about 5mm*5mm.

Summary. Hello, here to help you inquire: 1 carat sapphire ** in the range of 2,000 to 5,000 yuan for poor quality sapphires in general** and about 1,000 yuan a carat, Sri Lanka's sapphire royal blue level of 1 carat is about 3000 4000 yuan But the larger the carat, the more you can't take this to calculate Some large carats have a good color clarity of tens of thousands of yuan a carat is also normal.

Hello, here to help you inquire: 1 carat sapphire price in the range of 2,000 to 5,000 yuan, poor quality sapphire generally** and about 1,000 yuan a carat, Sri Lanka's sapphire royal blue level of 1 carat is about 3000 4000 yuan But the larger the carat, the more virtual it is, can not be calculated with this Some large carats have a good color clarity of tens of thousands of yuan a carat is also normal.

Sapphire is a common name for corundum gemstones other than ruby, and the main component is alumina (ALO). The blue sapphire is due to a small amount of titanium (Ti) and iron (Fe) impurities. The color of sapphires can be pink, yellow, rotten green, white, and even in the same Wang, so that the stone has a variety of colors.

1 carat = gram.

The diameter is in millimeters.

If it is round, it should be 5mm*7mm---6mm*8mm

So carat = gram.

Sapphire is a common name for corundum gemstones in addition to red ruby, and the main component is alumina (Al2O3). The blue sapphire is due to a small amount of titanium (Ti) and iron (Fe) impurities. The color of sapphires can be pink, yellow, green, white, or even multiple colors within the same stone.

Sapphires are found in Changle in China, Shandong, Thailand, Sri Lanka, Madagascar, Laos, and Cambodia, among which the rarest source should be Kashmir sapphires, and Myanmar is now the place where the highest quality sapphires are produced.

The most distinctive feature of sapphire is its uneven color, which can be seen in parallel hexagonal cylinders, with straight bands of color and growth lines of different shades. Poly wafer double crystal development, common louver double crystal pattern. The cracking is mostly split along the double crystal plane.

Strong dichroism, sapphires from different origins of the world have their own characteristics in addition to the above-mentioned common characteristics. In the 80s of the last century, many sapphire deposits were discovered in the basalt along the eastern coast of China.

Sri Lanka has discovered a blue star gemstone weighing up to carats and valued at least $100 million.

Tanzanite and sapphire are now very popular moisturizers among girls, and these two gemstones are similar in color, both are the color of the sea, with super good-looking. Let me tell you what is the difference between tanzanite and sapphire? Difference Between Tanzanite and Sapphire Tanzanite and sapphire have different hardnessThe hardness of sapphire is 9, second only to diamond, and the polished sapphire can be used to carve topaz, crystal.

Whereas, the hardness of tanzanite is only, so hardness is a distinct difference between them. Tanzanite and sapphire are different in colorTanzanite is actually a blue transparent zoisite, which will change blue under the sunshade finger, peach and violet under incandescent light, and the color will be different at different angles. Sapphires, on the other hand, only have two colors and must be observed by professional instruments.

Tanzanite and sapphire have different purities In terms of purity, high-quality natural sapphires are purified and clear compared to tanzanite, and the impurities of tanzanite will still be slightly more than sapphire. Tanzanite and macro sapphires are rarer in different sizes, so sapphires of different sizes are rare. Sapphires of 1-2 carats are already relatively large, and high-quality sapphires of more than 3 carats are even rarer.

There are more large grains of tanzanite, and carats are not uncommon, even more than a dozen carats. What is Tanzanite Tanzanite, also known as zoisite, is a silicate mineral. It was used as a decorative material in the early days, and since the discovery of blue-purple transparent crystals in Tanzania in 1967, it has been used in the gemstone industry.

Summary. Although people often refer to the origin of ruby sapphires when talking about them. For example, Myanmar Mogok ruby, Sri Lankan sapphire, etc.

This just means that there are more gems produced by these gem mines, not that as long as they are produced from these places, they must be good. It's not that other mines don't produce high-quality ruby sapphires. Therefore, the origin is only a reference, and you can't assume that it is a good thing just by hearing that it is a Burmese ruby.

It still depends on the thing, whether the color is beautiful, whether the clarity is good, whether there is artificial enhancement, whether there is a certificate of good credit, etc.

Although people often refer to the origin of ruby sapphires when talking about them. For example, Myanmar Mogok ruby, Sri Lankan sapphire, etc. This just means that there are more gems produced by these gem mines, not that as long as they are produced from these places, they must be good.

It's not that other mines don't produce high-quality ruby sapphires. Therefore, the origin is just a reference, and you can't think it's a good thing as soon as you hear that it is a Burmese red mu plum no gem. Xunna still depends on things, whether the color is beautiful, whether the clarity is good, whether there is artificial enhancement, whether there is a certificate of good credit, and so on.

It can sometimes be difficult to distinguish between the Tanxin pants and the blue jersey gemstone. However, the biggest disadvantage of tanzanite is that it is not as hard as sapphire. The hardness of sapphire is second only to diamond, which is 9.

The hardness of tanzanite is about the same as jadeite, only. Sapphire and tanzanite are compared together, and if you look more, you will find that sapphire appears hard, while tanzanite appears soft.

First of all, tanzanite has a much lower price point compared to sapphire; Secondly, tanzanite is more colorful than sapphire land-bearing stone. Most sapphires are grayish or blackish in color, while tanzanite is more blue; Third, compared with sapphire, tanzanite is more slippery and "big", 1-2 carats of sapphire is already relatively large, and tanzanite has more than a dozen carats; Fourth, most tanzanites are relatively clean and clear, and sapphires will have a little more impurities.