Opal's english is opal, which is derived from the latin language opalus, meaning “the beauty of the gems together”. Opal is also known as protein, flash cloud, etc. The ancient roman natural scientist, prynni, once said, “on a piece of europo, you can see the flames of rubies, the purple crystals, the green sea of grandmothers, the colours, the clothing, the beauty of the day.” opor is listed by the international jewellery community as the birth stone of october, symbolizing hope and boasting。
It is a valuable protein stone, first produced in australia and also known as proteins, flash clouds, etc. In the ancient roman era, the gems were the charms of good luck, and europo symbolized the rainbow and brought to its owners an exaggerating future. Because of its clear outward metaphor of pure love, it is also referred to as the “cubestone”。
The variety and colour of opor gives people a sense of mystery, so opor is popular with consumers. However, owing to the limited resources available in europo, most of the markets are modelled. So, how does opal confirm authenticity and market value? Let's find out。
How does the operstone verify authenticity
In fact, it is easier to identify the reals of opal, mainly on the basis that it can be distinguished from the rest of the jade by special colour effects; it is a homogenous body, rotating 360 degrees to full black in positive light; a refraction rate of 1. 45 and a weight of 2. 10, etc。
But the main concern in the identification of opal is that the first is synthetic opor. The low yield rate in europo has resulted in the scarcity of large europo jewellery, resulting in the emergence of many synthetic europoes in the market. Synthetic european berthing is easier to identify than other precious stones, and the colour colours of the berth are shown under magnifying mirrors in column-forming, with more rigid colours, while natural berth colours are highly variable and colour distribution is irregular。
The second point in the identification of operstones is the combination of europo: there are two types of collage, one of which is europo, and the other is the bottom layer of the mud ore. The second is three layers of rock, made of glass tops, europol and mud ore. The europolymers are more deceptive by looking at the binding stitches on the side, by seeing bubbles on the surface, and by carefully testing them with the tip of a needle, which can pierce the stitches。
Of course it's true and true, but it's also the quality of opal itself. The quality of the europolite is mainly based on colour, colour change, robustness, perfection and size of processing. The color is typically superior to black and dark colours; the more colour changes, the more shining and even, the better quality; and the larger, the better。
What's the value of the eurostone market
Opal is a stone comparable to a diamond, which is very expensive because it is very rare. So, what's the price of the europo? It is known that the price of synthetic europol is between $100 and $1,000, while the price of naturally produced europol can reach millions, a valuable stone. The colours of the opals are very numerous, and the price of the purer is more expensive and rarer。
In terms of the jewellery market for the last 10 years, europo is classified as a fast-growing type of offer, but not as a surge, during which the value added factor is higher, while the element of speculation is smaller and the price aspect is classified as a “health” exercise。
On average, the value-added of europo has fluctuated by about 10 times in the past 10 years, with 50 carats worth $300,000 around 2001, and the sale price today is about $1. 5 million, or rmb 30,000 per carat. After 2011, there was a straight upward trend in the volume of sales in europo, and the offer was a rapid upward trend compared to previous years, with a 6 mm x 9 mm area of europo, with retail prices usually at $10,000 to $20,000. High-quality, dark europol sells $3,500 per carat (equivalent to 23,000 yuan). The excellent black europol can be based on $15,000 per carat (equivalent to approximately $100,000 rmb)
At the recent sofuby jewellery auction, various types of coloured gems continued to be popularized, including opalstone, commonly known as protein. A white-and-white, pink-coloured europol ring is set at hk$120,000, and hk$350,000 is sold; and a red line of europol collar offers exceed hk$1 million. Most of them are known for the colour change, but the most valuable fire is the black europo, which is not coloured. Precincts keep the treasure, the details cannot be ignored。
Oporite assessment and exchange centre: ms. Lee (communication of traditional chinese culture, online knowledge, history of chinese civilization, taste, memory)
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