Why There’s No Diamond ETF, and What Investors Use Instead

Diamonds are the most heavily marketed luxury commodity on the planet, and yet nowhere in the world can you buy a diamond futures contract, a diamond ETF, or a spot exchange position. The most advertised precious object in history has no tradable market of its own.

This is not an oversight, and it is not a regulatory gap waiting for someone to close it. It flows from a physical fact about diamonds that no engineering can undo: no two stones are identical, so no two are interchangeable. That single property is why the direct route into diamonds simply does not exist.

Understanding why the commodity door is bolted shut tells you precisely which doors remain open. This piece maps the three routes investors actually use, weighs each against the structural constraint that produced them, and lands on a clear view of which comes closest to practical for most people, and what you are really buying if you walk through it.

Why diamonds have no commodity market (and cannot easily get one)

Start with the concept that makes markets like gold and copper possible: fungibility. One ounce of gold at a given purity is interchangeable with any other ounce of gold at that purity. A tonne of copper cathode is the same wherever it comes from. That sameness is what lets you write a contract, set a single price, and trade at scale.

The gold vs diamonds comparison sharpens the fungibility point considerably: gold’s standardised purity grades and centralised exchange infrastructure are precisely what allow it to support futures, ETFs, and a liquid spot market, while diamonds, lacking any equivalent unit, cannot replicate that architecture.

Diamonds break this at the root. Each stone carries a distinct combination of carat, cut, clarity, and colour, and those variations are not cosmetic. They are the entire basis of value.

According to Paul Zimnisky’s Diamond Investing FAQ, the unique nature of each stone means there are effectively separate markets for over 12,000 distinct diamond categories once you account for rough versus polished grades. You cannot build one futures contract on top of 12,000 different products. There is no standard unit to reference.

The pricing opacity makes it worse. There is no centralised market mechanism setting a live price, so professionals rely on specialist subscription lists such as Rapaport to obtain indicative values at all. Price discovery is a paid, fragmented process rather than a public one.

A 2019 analysis by FinTech Futures frames the obstacles as three linked barriers:

• Lack of fungibility: no standardised unit exists, because every stone differs across the four Cs.
• Lack of transparency: valuation is opaque and depends on specialist price lists rather than an open exchange.
• Lack of liquidity: diamonds are mostly sold one way to end consumers, leaving weak secondary markets.

Here is the interpretive point to carry through the rest of this article: any diamond investment vehicle you encounter is, by definition, a workaround for a market that does not exist. Evaluate every one of them with that in mind.

Three decades of failed diamond investment vehicles

The absence of a market is not for want of trying. Over more than thirty years, futures contracts, derivatives, and dedicated funds have all been attempted and abandoned, defeated each time by the same standardisation and pricing problems, as documented in industry reviews of these repeated efforts.

The supply chain does not help. Research from TSG Lab AG notes that a diamond changes hands 10 to 15 times from mine to retail, with fragmented paper documentation at each step, compounding the trust and information gaps.

The cost of having no hedging tool is real. When diamond prices fell 25 to 30% in US dollar terms over several years, Indian diamantaires had no futures market to hedge against the decline, and several trading units closed as a result. That is what a missing market looks like in practice.

The three routes investors actually use, and what each costs them

With the direct route closed, three workarounds remain: physical stones, mining equities, and tokenised instruments. Think of them as a spectrum from most familiar to most experimental, and notice that the trade-offs stack up as you move along it.

Physical ownership is the oldest route and the least liquid. The core problem is not price volatility; it is that the market runs one way. Diamonds are sold to consumers with heavy retail mark-ups, and when you try to sell, there is no functioning secondary market to meet you at fair value.

Mining equities are the most accessible route, and here the problem is contamination. When you buy a diamond miner, you are buying a stock, and stocks move with the market they trade in.

That is where an academic finding from Jotanovic (2019) bites hardest. The study concluded that diamond-mining stock returns are driven primarily by local equity indices rather than by diamond price dynamics, meaning the stocks should not be treated as substitutes for diamonds themselves.

If equity returns track their home index more than the diamond price, a diamond miner may not give you meaningfully more diamond exposure than a broad equity fund would. That substitution risk is the thing to weigh before you allocate a cent.

Tokenised instruments are the newest and the most institutional. Two projects illustrate the shape of the space. Tiamonds, run by the Liechtenstein-based regulated platform LCX, issues ERC-721 tokens on Ethereum, each representing 1-to-1 ownership of a GIA-certified natural diamond held in a Liechtenstein vault and insured by Lloyd’s of London, with the platform relaunched in May 2023.

The second is larger and more recent. In February 2026, Billiton Diamond and tokenisation firm Ctrl Alt moved over AED 1 billion (approximately $280 million) of certified polished diamonds onto the XRP Ledger using Ripple’s institutional custody technology. Both remain niche and institutionally oriented rather than genuinely retail-accessible.

Tokenised precious metal structures offer a useful comparison point for evaluating diamond tokenisation projects: gold-backed tokens benefit from the same fungibility that makes gold’s spot market function, so the custody, redemption, and secondary liquidity mechanisms that work for digital gold cannot be assumed to transfer to a fragmented, non-standardised asset class.

The sharpest summary of this landscape comes from Neil Ventura, whose “Missing Tier” essay captures why none of the three feels clean.

Investors today face three unattractive options: buying branded jewellery and absorbing large retail mark-ups, buying polished stones and finding no functioning secondary market, or buying mine equity and inheriting operational risk unrelated to the underlying asset.

None of these routes is a solution. The choice is about which imperfection you can live with.

Lab-grown diamonds and what they change for investors

The number that matters most for investors is not a technology headline. It is the price gap.

By mid-2026, a 1-carat natural diamond sold for roughly $4,220 while a comparable lab-grown stone cost about $800. At three carats the gap is starker still: roughly $55,255 for natural against approximately $3,735 for lab-grown.

That gap has widened dramatically. Lab-grown diamonds carried around a 10% discount to mined stones in 2015; by 2025 to 2026 that discount had widened to 80 to 90%, according to data cited by Forbes and Zimnisky.

The signal here is structural, not cosmetic. An 80 to 90% discount tells you that natural diamond pricing is no longer anchored to the cost of production the way it once was, which removes the supply-driven price floor that made mining equities a cleaner call in earlier decades.

The pressure is not spread evenly. The natural market has bifurcated: smaller, commercial-grade stones face severe competition from lab-grown equivalents, while large, high-quality stones of 2 carats and above have held more of their value. Meanwhile, rough natural prices fell roughly 34% from their 2022 peak to late 2024, and cumulatively around 50% over four years.

For anyone holding mining equities, the second-order effects are the point:

• Revenue compression as realised prices fall across commercial-grade production.
• Inventory build-ups as unsold stock accumulates through the chain.
• Production cuts, with global rough output reportedly reduced by around 20% from peak (from roughly 120 million to 98 million carats, a figure that industry sources flag as not independently confirmed).
• Flat demand: De Beers-sourced data indicate global demand for natural diamond jewellery was flat in 2025 after three years of decline.

These affect equity fundamentals directly, even in the periods when share prices decouple from diamond spot prices. A weakening underlying asset shows up in the accounts regardless.

What the August 2026 price data shows

The most recent polished price data reinforces the bifurcation story rather than overturning it. In August 2026, Rapaport’s RapNet Diamond Index recorded the 1-carat category up 0.5%, the 0.30-carat up 2%, and the 0.50-carat up 2.5%, while 3-carat stones slipped 0.4%.

Read that carefully before calling it a recovery. Smaller stones ticked up modestly while the largest slipped, which is a fragmented, size-segmented pattern, not a broad rebound. It confirms the structural story more than it challenges it.

Mining equities as the least-bad option: what the data shows

Here the practitioner case and the academic evidence pull in opposite directions, and the honest thing is to let them sit side by side rather than pretend one wins outright.

The bullish view comes from Zimnisky, whose FAQ argues that the best way to speculate on diamond price movements is through mining equities, which have historically shown high correlation to diamond prices, while acknowledging company-level operational and financial risk. On this view, equities are the most accessible route available.

The bearish view is the Jotanovic (2019) finding again: those same equity returns are driven mainly by local stock indices, not by diamond prices, so the stocks are not a genuine substitute for diamond exposure.

Jotanovic and D’Ecclesia (2019), published in the Journal of Risk and Financial Management, found that diamond-mining equity returns are driven primarily by local stock indices rather than diamond price dynamics, a conclusion that directly undermines the case for treating mining stocks as a proxy for diamond exposure.

Diamond-mining stocks do not represent a valid investment alternative to diamonds themselves, with returns driven primarily by local stock indices rather than diamond price dynamics.

Both can be true at once. The stocks may correlate with diamonds in some windows while their long-run returns still track their home market. “Least-bad” is a real finding, not a recommendation in disguise.

Lucara Diamond Corp shows what the route looks like in practice at current prices. On the Botswana Stock Exchange (ticker LUCA) it traded at P1.70 per share on 18 September 2026, and on the Toronto Stock Exchange (LUC) at C$0.18 on 14 September 2026, implying a market capitalisation of roughly $182.8 million.

That figure carries a warning. A market cap near $182.8 million puts this in micro-cap territory, with the liquidity profile and volatility to match, so “most accessible route” does not mean low-risk, and position sizing should reflect that.

The De Beers route runs through parent company Anglo American, which means your exposure is indirect and diluted. You inherit Anglo American’s broader diversified mining portfolio, not a pure-play diamond position.

The De Beers ownership transition adds a layer of structural uncertainty to the indirect-exposure route: a change in the company controlling the world’s largest diamond marketing apparatus could shift sightholder terms, production priorities, and the pace of supply rationalisation that miners are currently relying on to stabilise prices.

TSINetwork’s 2026 guidance is to concentrate on profitable, well-established mines with high-quality reserves. The key risks to weigh across any diamond miner:

• Operational risk: geology, project execution, and cost overruns.
• Luxury-cycle leverage: heavy exposure to discretionary consumer spending.
• Lab-grown competition: a structural, not cyclical, demand threat.
• Debt levels: balance-sheet strain in a low-price environment.
• Equity-market correlation: returns that track indices as much as diamonds.

What investors can realistically expect from diamond market exposure today

Pull the threads together and the picture is consistent. The missing commodity layer is still missing, every available vehicle is still a workaround, and the underlying asset now faces a structural repricing from lab-grown competition rather than a passing cyclical dip.

Could that change? Possibly. TSG Lab AG’s work on cryptographic digital twins and on-chain provenance points toward better standardisation, and tokenised pooling could one day support a more direct instrument. But it has not happened yet, and with over 12,000 diamond categories to reconcile, you should not build a plan around it arriving soon.

Ventura’s “Missing Tier” diagnosis remains the cleanest frame: the liquid, institutional investment tier for diamonds is structurally absent, and everything you can actually buy sits below it.

For readers wanting to stress-test whether current supply cuts are enough to stabilise prices, our full explainer on diamond price forecasts examines whether rough production reductions are structural or tactical, and models the scenarios under which natural diamond prices could stabilise or continue falling.

Here is the practical read on what each route delivers:

• Mining equities: the most accessible route, but the evidence says you are buying equity-market risk more than diamond exposure.
• Tokenised instruments: genuine 1-to-1 backing in the better projects, but niche, institutional, and dependent on thin secondary demand.
• Physical stones: a possible store of value, but illiquid, opaque, and with no functioning market to exit at fair value.

If you allocate to diamond miners, do it with equity-market risk models, not commodity exposure models, because the academic evidence says that is what you are actually holding. Calling it “diamond exposure” overstates the precision of what you own.

This article is for informational purposes only and should not be considered financial advice. Investors should conduct their own research and consult with financial professionals before making investment decisions. Past performance does not guarantee future results, and financial projections are subject to market conditions and various risk factors.