Data sourced from SEC EDGAR filings and third-party price providers. Scores, valuations, and metrics are algorithmic estimates. This is not investment advice. See our Terms and Methodology.
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Data sourced from SEC EDGAR filings and third-party price providers. Scores, valuations, and metrics are algorithmic estimates. This is not investment advice. See our Terms and Methodology.
Gem Diamonds Limited is a global diamond mining company headquartered in London, United Kingdom, specializing in the exploration, development, and operation of high-value diamond mines. Founded in 2005 by Clifford Elphick, it primarily owns the renowned Letšeng diamond mine in Lesotho, known as the highest average dollar-per-carat kimberlite mine worldwide, producing large, top-color exceptional white diamonds, including over 126 rough diamonds greater than 100 carats since acquisition in 2006, as well as rare pink and blue stones. The company also operates the Ghaghoo mine in Botswana, currently on care and maintenance. Gem Diamonds Limited conducts diamond sorting, sales, marketing, and manufacturing in Antwerp, Belgium, while providing technical services from South Africa and innovation solutions in Cyprus. Its operations span the full diamond value chain, from mining rough diamonds to polished production and strategic sales through tenders and partnerships, generating revenue mainly from high-quality gem production in the precious metals and mining sector.
£0.04
+£0.00 (+6.06%)
EOD Jul 3, 2026
The business is unprofitable at the operating level (-8.81% margin). The thesis depends entirely on whether and when it reaches sustainable profitability.
Revenue declined 36.2% YoY. Margins deteriorated 19.4pp alongside, both lines moving the wrong way.
Free cash flow declined 135% versus the prior year, cash generation momentum has weakened. ROIC dropped from 4.60% to -3.01%, capital efficiency is deteriorating.
Based on TTM earnings · Diluted shares
Profitability & Returns
Revenue (TTM)
$98M
▼ -36.2% YoY
Net Income (TTM)
-$124M
▼ -1628.0% YoY
Op. Margin
-8.81%
▼ -19.4pp YoY
ROIC
-3.01%
▼ -7.6pp YoY
Cash Flow & Balance Sheet
FCF (TTM)
-$8M
▼ -135.4% YoY
Op. Cash Flow (TTM)
-$4M
▼ -115.4% YoY
Net Debt
$24M
Cash & Equiv.
$4M
3Y CAGR: -10.9%
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Gem Diamonds (GEMD.XLON)'s valuation is best read against its own history, its peers, and the growth its price implies. A high multiple is not the same as overvalued: fast-growing, high-quality businesses can deserve a premium. See the general approach in how to tell if a stock is overvalued.
On quality, Gem Diamonds scores 0/100 on Intrinsiqq's quality scorecard (a lower-quality business on these measures), weighing growth, margins, returns on capital, share count, and balance-sheet strength. All figures are computed from SEC filings; read the full . This is analysis, not investment advice.
Gem Diamonds scores 0 out of 100 on Intrinsiqq's quality score, a weighted blend of 6 metrics each scored 0 to 100, which makes it a lower-quality business on these measures. Recent fundamentals include a -8.8% operating margin and a -3.0% return on invested capital. The score weighs revenue and free-cash-flow growth, operating margins, return on invested capital, share-count change, and balance-sheet strength, all computed from SEC filings, not opinion. Because valuation only means something relative to quality, the full metric-by-metric breakdown is on the quality scorecard.
That depends on valuation and quality together, not either alone. you should weigh GEMD.XLON's valuation and scores 0/100 on quality (lower-quality). A cheap price is only a bargain if the business is durable, and a premium can be justified by genuine quality, so the two questions, "is it cheap?" and "is it good?", only make sense side by side. Read the valuation against the quality scorecard, run the DCF on your own assumptions, and decide for yourself. This is analysis from SEC filings, not investment advice.