4 diamond stocks to watch

Ready to invest in the precious gem industry? Compare potential investments and learn how to buy diamond stocks in just a few steps.

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.

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) (data unavailable) $196.2 million (USD) The New York Stock Exchange 0 Buy now
Rio Tinto ADR (RIO.US) (data unavailable) $121.5 billion (USD) NYSE 0 Buy now
Signet Jewelers (SIG.US) $91.39 $3.6 billion (USD) NYSE 0 Buy now
Lucara Diamond (LUC.TO) C$0.19 $81.9 million (CAD) Toronto Stock Exchange 16,136 Buy now
The values in this table are accurate as of the market close on December 14, 2025.

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.
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min $1.00, max 0.5%
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Finder Score for stock trading platforms

To make comparing even easier we came up with the Finder Score. Trading costs, account fees and features across 10+ stock trading platforms and apps are all weighted and scaled to produce a score out of 10. The higher the score, the better the platform—it's that simple.

Read the full methodology

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:

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.


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.

Market Capitalization $196.2 million
Gross profit (TTM) $253.2 million
Profit margin -0.09%
Revenue (TTM) $432.6 million
Earnings per share (TTM) -$0.03
52-week stock price range $1.11 – $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 December 14, 2025.

Rio Tinto ADR (RIO)

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

Market Capitalization $121.5 billion
Gross profit (TTM) $14.9 billion
Profit margin 19.12%
Revenue (TTM) $53.7 billion
Earnings per share (TTM) $6.28
52-week stock price range $50.45 – $74.63
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 December 14, 2025.

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.

Market Capitalization $3.6 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 $44.99 – $109.86
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 December 14, 2025.

Lucara Diamond (LUC)

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

Closing stock price C$0.19
Market Capitalization C$81.9 million
Gross profit (TTM) C$97.9 million
Profit margin 24.81%
Revenue (TTM) C$197 million
Earnings per share (TTM) C$0.15
52-week stock price range C$0.16 – C$0.55
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 December 11, 2025.

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.

Frequently asked questions about diamond stocks

Sources

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:
Important information: Powered by Finder.com. This information is general in nature and is no substitute for professional advice. It does not take into account your personal situation. This information should not be interpreted as an endorsement of futures, stocks, ETFs, CFDs, options or any specific provider, service or offering. It should not be relied upon as investment advice or construed as providing recommendations of any kind. Futures, stocks, ETFs and options trading involves substantial risk of loss and therefore are not appropriate for most investors. You do not own or have any interest in the underlying asset. Capital is at risk, including the risk of losing more than the amount originally put in, market volatility and liquidity risks. Past performance is no guarantee of future results. Tax on profits may apply. Consider the Product Disclosure Statement and Target Market Determination for the product on the provider's website. Consider your own circumstances, including whether you can afford to take the high risk of losing your money and possess the relevant experience and knowledge. We recommend that you obtain independent advice from a suitably licensed financial advisor before making any trades.

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