4 diamond stocks to watch

The best diamond stocks depend on your portfolio and investment goals—while volatility can be ideal for day traders, long-term investors will want to look for stocks with steadier gains over time.

You'll also want to consider which stocks are easy to buy. Many diamond stocks are located on non-US exchanges, which means you'll need a brokerage account that offers access to international stocks. Different brokerages offer access to different exchanges, so, if you're interested in a specific non-US stock, you'll want to check if it's available through your trading platform.

4 popular diamond stocks to watch

We round up a selection of stocks in or related to the precious gem industry, weighting the list more heavily towards popular mid- and large-cap stocks.

Best stock	Stock price	Market cap	Exchange	Trade volume	Buy on Interactive Brokers
Brilliant Earth Group (BRLT.US)	$1.30 The latest available market close price for Brilliant Earth Group in USD.	$128.6 million (USD)	The New York Stock Exchange	47,785
Rio Tinto ADR (RIO.US)	$83.15 The latest available market close price for Rio Tinto ADR in USD.	$146.1 billion (USD)	NYSE	5,079,900
Signet Jewelers (SIG.US)	$89.05 The latest available market close price for Signet Jewelers in USD.	$3.5 billion (USD)	NYSE	3,997,975
Lucara Diamond (LUC.TO)	C$0.27 The latest available market close price for Lucara Diamond in CAD.	$416.8 million (CAD)	Toronto Stock Exchange	40,812

The values in this table are accurate as of the market close on March 24, 2026.

What to look for when investing in diamond stock

The precious gem industry is affected by a range of complex factors such as trade policies, regulations, and fluctuating supply and demand. So when considering diamond stocks to buy, it's important that you have access to vital information about a company's financial health, leadership team, and market positioning.

Also keep in mind that, while volatility can be ideal for day traders, long-term investors will want to look for stocks to offer steadier gains over time.

How to invest in diamond stock

1. Research the precious gem industry. Before investing, learn about the diamond stock sector, its trends and the companies within it. Look at each company's financial health, potential for growth and past performance to identify stocks that fit your investment goals.
2. Choose a stock trading platform. Compare trading fees, access to trading tools and user interface options. We've identified reliable trading platforms to help narrow down your options below or check out the best stock trading apps in Canada to find one that suits your needs.
3. Open and fund your account. Sign up with your personal details and link a bank account or funding method to deposit money before you start trading.
4. Select the diamond stock(s) to buy. Search by company name or ticker symbol, like BRLT or RIO. Compare key metrics such as market cap, price history and earnings per share to pick the best stock for your strategy.
5. Buy the stock and monitor performance. Place your order to buy the stock and track its performance over time. Consider setting alerts, signing up for industry newsletters or using platform research tools to stay up to date on market changes.

Compare trading platforms to buy diamond stock

You can buy diamond stocks from Canada with a brokerage platform below that offers access to international exchanges. Note that the dollar amounts in the table below are in Canadian dollars.

Are diamond stocks a good investment?

While it's possible to turn a profit investing in diamond stocks, keep in mind that—like any investment—diamond stocks are not immune to risk. These stocks are subject to fluctuating conditions both in the market and in the precious gem industry, so carefully vet your picks before you invest.

What are the best diamond stocks?

A lot of factors go into picking the best diamond stocks. Stock performance can be impacted by factors like market conditions, company decisions and global events. Plus, what may be a strong diamond stock investment for one person might not be suitable for another.

That said, we rounded up this list of popular diamond stocks in or related to the precious gem industry to help narrow down your options:

• Brilliant Earth Group (BRLT)
• Rio Tinto ADR (RIO)
• Signet Jewelers (SIG)
• Lucara Diamond (LUC)

Keep in mind that this is not a "best" list or a recommendation. It highlights some diamond stocks for informational purposes only and does not indicate past or future performance or investment advice. We do not guarantee any investment performance.

We've outlined detailed company and stock performance details for each diamond stock below. Keep reading to decide if any of these companies are the right investment for you.

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Brilliant Earth Group (BRLT)

Brilliant Earth Group, Inc. designs, procures, and sells diamonds, gemstones, and jewelry in the United States and internationally. The company offers diamond engagement rings, wedding and anniversary rings, gemstone rings, and fine jewelry.

Closing stock price	$1.30
Market Capitalization The total market value of Brilliant Earth Group's outstanding shares	$128.6 million
Gross profit (TTM)	$251.5 million
Profit margin	-0.83%
Revenue (TTM)	$437.5 million
Earnings per share (TTM)	-$0.25
52-week stock price range	$1.17 – $3.10

All dollar amounts in this table are in USD. TTM refers to the "trailing 12 months." All values are accurate as of the market close on March 22, 2026.

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Rio Tinto ADR (RIO)

Rio Tinto Group engages in exploring, mining, and processing mineral resources worldwide. The company operates through Iron Ore; Aluminium and lithium; and Copper segments. The Iron Ore segment engages in the iron ore mining, and salt and gypsum production in Western Australia.

Closing stock price	$83.15
Market Capitalization The total market value of Rio Tinto ADR's outstanding shares	$146.1 billion
Gross profit (TTM)	$16.2 billion
Profit margin	17.29%
Revenue (TTM)	$57.6 billion
Earnings per share (TTM)	$6.08
52-week stock price range	$49.07 – $98.77

All dollar amounts in this table are in USD. TTM refers to the "trailing 12 months." All values are accurate as of the market close on March 19, 2026.

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Signet Jewelers (SIG)

Signet Jewelers Limited operates as a diamond jewelry retailer. It operates through three segments: North America, International, and Other. The North America segment operates jewelry stores in malls, mall-based kiosks, and off-mall locations in the United States and Canada primarily under the Kay Jewelers, Zales Jewelers, Jared Jewelers, Diamonds Direct, Banter by Piercing Pagoda, Peoples Jewellers, and Rocksbox brands, as well as operates online through its digital brands, James Allen and Blue Nile.

Closing stock price	$89.05
Market Capitalization The total market value of Signet Jewelers's outstanding shares	$3.5 billion
Gross profit (TTM)	$2.7 billion
Profit margin	2.13%
Revenue (TTM)	$6.8 billion
Earnings per share (TTM)	$3.32
52-week stock price range	$49.21 – $109.48

All dollar amounts in this table are in USD. TTM refers to the "trailing 12 months." All values are accurate as of the market close on March 19, 2026.

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Lucara Diamond (LUC)

Lucara Diamond Corp. , a diamond mining company, engages in the development and operation of diamond properties in Africa. The company holds a 100% interest in the Karowe mine located in Botswana.

Closing stock price	C$0.27
Market Capitalization The total market value of Lucara Diamond's outstanding shares	C$416.8 million
Gross profit (TTM)	C$64.7 million
Profit margin	16.36%
Revenue (TTM)	C$159.7 million
Earnings per share (TTM)	C$0.08
52-week stock price range	C$0.16 – C$0.40

All dollar amounts in this table are in CAD. TTM refers to the "trailing 12 months." All values are accurate as of the market close on March 22, 2026.

Bottom line

If you're considering adding diamond stocks to your portfolio, make sure you thoroughly look into any companies before investing to help mitigate risk. We've compiled a list of diamond stocks to help narrow down your options. Then choose a legitimate stock trading platform to start investing. After that it comes down to monitoring the precious gem industry to know when to buy, sell or hold.

Related: How to buy stocks in Canada

Frequently asked questions about diamond stocks

• What are diamond stocks?

  Diamond stocks are shares of companies that either directly work in the diamond sector or operate within related industries. Investors interested in buying diamond stocks may be looking to take advantage of market trends or lock in investments for the long haul.

• What is the top diamond stock to buy in 2026?

  Unfortunately, it's almost impossible to choose a single "top" diamond stock to invest in due to factors like market fluctuations, company management and shifting economic trends. These can all change—sometimes overnight—how a stock performs. It's best to do your own research to decide which companies fit within your risk tolerance. Reviewing a company's financial reports and past stock performance can help you decide if it's worth investing in.

• Where can I find information and regular updates about the precious gem industry?

  You can keep track of the latest precious gem news and updates by signing up for financial newsletters, visiting financial news sites, reading company investor relations pages and using market research platforms. Many online brokerages also offer sector reports, stock screeners and alerts to help you track movements in your stock performance or updates in or related to the precious gem industry.

Check these other commodities and investment sectors

If you're thinking about diversifying your portfolio and investing in sectors beyond diamond stocks, here are some others you can consider:

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