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Artificial phenomenal gem and preparation method thereof

A gemstone and artificial technology, applied in the field of artificial color-changing gemstones and their preparation, can solve problems such as poor color and luster, achieve the effects of increasing the heating area, strengthening the melting process, and strong adaptability

Active Publication Date: 2018-08-07
东莞市屹泰水晶工艺有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Patent 200810122029.1 discloses a preparation method of beryllium aluminate crystal-matrix color-changing gemstones. In BeAl2O4 single crystal, three dopants of Cr2O3, Fe2O3, Ti2O3 or NiO are mixed, and the color-changing gemstones are prepared by vertical static temperature gradient method. This gemstone can only achieve changes in red and green, and the color is not very good

Method used

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  • Artificial phenomenal gem and preparation method thereof
  • Artificial phenomenal gem and preparation method thereof
  • Artificial phenomenal gem and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Artificial color-changing gemstones, including the following raw materials in parts by weight:

[0044]

[0045] The flux is B2 o 3 , the clarifying agent is Sb 2 o 3 .

[0046] A kind of preparation method of artificial color-changing gem, it is characterized in that: comprise the steps:

[0047] (1) Mix the raw materials in proportion and stir evenly to obtain mixture A;

[0048] (2) Heating the mixture A to 1350°C and keeping it for 20 hours, so that the mixture A is completely melted, and a melt B is obtained;

[0049] (3) Cool the molten body B to 1200°C, keep it for 4 hours and then pour it into a mold to obtain shaped gemstone C;

[0050] (4) Annealing the shaped gem C to obtain an artificial color-changing gem.

[0051] Further, in the step (2), the mixture A is put into an electric furnace for heating.

[0052] Further, the annealing in the step (4) includes the following stages:

[0053] (a) In the heating stage, the shaped gemstone C is heated up t...

Embodiment 2

[0061] The difference between embodiment 2 and embodiment 1 is that the artificial color-changing gemstone includes the following raw materials in parts by weight:

[0062]

[0063] The flux is K 2 CO 3 , the clarifying agent is Sb 2 o 3 .

Embodiment 3

[0065] The difference between embodiment 3 and embodiment 1 is that the artificial color-changing gemstone includes the following raw materials in parts by weight:

[0066]

[0067] The flux consists of B 2 o 3 、K 2 CO 3 and Na 2 CO 3 Mixed according to the weight ratio of 1:1:1, the clarifier is Sb 2 o 3 .

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Abstract

The invention belongs to the technical field of artificial gems, and particularly relates to an artificial phenomenal gem and a preparation method thereof. The artificial phenomenal gem comprises SiO2, K2O, Nd2O3, CaCO3, Pr6O11, Na2O, ZnO, As2O3, a fluxing agent and a clarifying agent. The preparation method comprises the following steps: (1) mixing various raw materials proportionally, and stirring uniformly to obtain a mixture A; (2) heating the mixture A to the temperature of 1350-1500 DEG C, and maintaining for 20 hours till the mixture A is melted completely to obtain a melt B; (3) cooling the melt B to the temperature of 1200-1250 DEG C, maintaining for 4 hours and then pouring the melt B into a mold to obtain a formed gem C; and (4) annealing the formed gem C. The artificial phenomenal gem can produce broad color and hue, and has bright green purple color-changing effect under different light rays; by the preparation method, the discharge rate can be increased obviously; and thepreparation method is environmentally friendly.

Description

technical field [0001] The invention belongs to the technical field of artificial gemstones, and in particular relates to artificial color-changing gemstones and a preparation method thereof. Background technique [0002] Alexandrite (ALEXANDRITE), also known as chrysoberyl, is one of the five precious gemstones and belongs to the color-changing variety of chrysoberyl. In daylight or daylight-type light, its color is usually gray-green, yellowish-green to blue-green; but in incandescent light, it usually appears maroon or purple-red. Commonly known as "emerald by day, ruby ​​by night". The factors that affect the price of alexandrite are mainly the color-changing effect, size, transparency and number of flaws of alexandrite. Generally speaking, the more obvious the discoloration effect is, such as emerald green during the day and bright red at night, the higher the price. But under normal circumstances, there are very few gemstones with such an obvious color-changing effe...

Claims

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Application Information

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IPC IPC(8): C03C1/04C03C1/00C03C3/095C03C3/062C03C3/068C03C4/06C03B19/02C03B25/00C03C6/04
CPCC03B19/02C03B25/00C03C1/004C03C1/04C03C3/062C03C3/068C03C3/095C03C4/065
Inventor 关山月熊胜荣候昌洪
Owner 东莞市屹泰水晶工艺有限公司
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