[논문]보석용 합성 다이아몬드의 현황

최현민; 김영출; 석정원

doi:10.6111/jkcgct.2022.32.4.159

보석용 합성 다이아몬드의 현황
Current status of gem-quality laboratory-grown diamond 원문보기

한국결정성장학회지 = Journal of the Korean crystal growth and crystal technology, v.32 no.4, 2022년, pp.159 - 167

최현민 ((주)한미보석감정원) , 김영출 ((주)한미보석감정원) , 석정원 (동신대학교 전기전자재료공학과)

초록
AI-Helper

지난 수 십 년간 합성 다이아몬드는 글로벌 다이아몬드 시장에서 점점 더 번창해 왔다. 보석용 합성 다이아몬드를 성장시키는 방법에는 HPHT와 CVD의 두 가지 방법이 있다. HPHT 프레스를 이용하여 성장시킨 보석용 합성 다이아몬드는 1990년대 중반부터 상업적인 생산이 가능해졌고, 현재는 상당한 양의 보석용 무색 HPHT 합성 다이아몬드가 보석산업을 위해 생산되고 있다. 몇 년 전부터는 CVD 합성 다이아몬드가 시장에서 반향을 일으키고 있다. 2021년에는 CVD 합성 다이아몬드의 생산량이 급증했으며 이러한 추세는 계속될 것으로 여겨진다. 본 연구에서는 합성 다이아몬드의 현재 상황을 비롯하여 천연 다이아몬드에 비해 낮은 유통가격, 시장 점유율, 컬러 분포, 분광학적 특성 등에 대한 정보를 보여준다.

Abstract ▼ AI-Helper

In the past few decade years, laboratory-grown diamonds, also known as synthetic diamonds usually, have become more and more prosperous in the global diamond market. There are two main crystal growth processes of the gem-quality laboratory-grown diamond, the high pressure and high temperature (HPHT) and chemical vapor deposition (CVD). Synthetic gem diamonds grown by the HPHT press have been commercially available since the mid-1990s. Today, significant amounts of gem-quality colorless HPHT laboratory-grown diamonds have been producing for the jewelry industry. In the last several years, the CVD laboratory-grown diamonds have been gaining popularity in the market. In 2021, the CVD production rose and there are expectations that the trend would move upward continuously. This article presents information about the current status of laboratory-grown diamonds, lower cost compared to natural diamonds, market share, color distribution, spectroscopic properties of laboratory-grown diamonds, and so on.

주제어

표/그림 (12)

그림 Fig. 1. "Press" apparatus are used to grow HPHT synthetic diamond crystals. (a) Belt press; (b) BARS press; (c) Cubic press.
그림 Fig. 2. New record size for CVD laboratory-grown diamond has been achieved by Ethereal Green Diamond Co. Ltd. Records for crystal size and quality are frequently broken. (a) 16.41ct, by Zhengshi Technology, China; (b) 22.72ct, by Greenlab, India; (c) 30.18ct, by Ethereal Green Diamond, india.
그림 Fig. 3. Total gem-quality laboratory-grown diamond rough production, 2020E: around 6 to 7 million carats [by Bain & Company, 2021].
표 Table 1 HPHT laboratory-grown diamond manufacturers and production in the world (September 2021)
그림 Fig. 4. Share of the total diamond jewelry market. The market share of laboratory-grown diamonds continues to grow.
표 Table 2 CVD laboratory-grown diamond manufacturers in the world (September 2021)
그림 Fig. 5. Price of polished laboratory-grown diamond as a percentage of polished natural diamond (1 carat, G-VS polished) [by Bain & Company, 2021].
그림 Fig. 6. Color distribution of HPHT-grown diamonds analyzed by Hanmi Lab (Y axis is % of HPHT-grown diamonds and X axis is year).
그림 Fig. 7. Color distribution of CVD-grown diamonds analyzed by Hanmi Lab (Y axis is % of CVD-grown diamonds and X axis is year).
그림 Fig. 8. Absorption spectra of natural and CVD-grown diamond in the middle infrared region. (a) Natural diamond; (b) CVD Laboratory-grown diamond [by Hanmi Lab.].
그림 Fig. 9. The photoluminescence spectra of CVD-grown diamond at liquid helium temperature shows SiV- center at 736.6 and 736.7 nm. (a) CVD Laboratory-grown diamond; (b) Natural diamond (type Ia) [by Hanmi Lab.].
그림 Fig. 10. The emission at 596 and 597 nm doublet is a strong indicator of CVD growth and would be annealed out at very high temperature [by Hanmi Lab.].

참고문헌 (20)

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상세보기
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