Gem DiamondsGMDMF OCF Margin % is 27.12% as of Dec. 2025, which is 21% below its 10-year median of 34.35. The stock has 5 warning signs investors should review. Among 846 Metals & Mining companies, Gem Diamonds ranks better than 54.02% on this metric.
The historical rank and industry rank for Gem Diamonds's OCF Margin % or its related term are showing as below:
GMDMF'
s OCF Margin % Range Over the Past 10 Years
Min: 6.4 Med: 34.35 Max: 51.76
Current: 6.4
During the past 13 years, the highest OCF Margin % of Gem Diamonds was 51.76%. The lowest was 6.40%. And the median was 34.35%.
GMDMF's OCF Margin % is ranked better than 54.02% of 846
companies
in the Metals & Mining industry
Industry Median: 4.465
vs GMDMF: 6.40
Gem Diamonds OCF Margin % Related Terms
Gem Diamonds OCF Margin % Historical Data
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The historical data trend for Gem Diamonds's OCF Margin % can be seen below:
* For Operating Data section: All numbers are indicated by the unit behind each term and all currency related amount are in USD. * For other sections: All numbers are in millions except for per share data, ratio, and percentage. All currency related amount are indicated in the company's associated stock exchange currency.
For the Other Precious Metals & Mining subindustry, Gem Diamonds's OCF Margin %, along with its competitors' market caps and OCF Margin % data, can be viewed below:
* Competitive companies are chosen from companies within the same industry, with headquarter located in same country, with closest market capitalization; x-axis shows the market cap, and y-axis shows the term value; the bigger the dot, the larger the market cap. Note that "N/A" values will not show up in the chart.
Gem Diamonds OCF Margin % vs Metals & Mining Industry
For the Metals & Mining industry and Basic Materials sector, Gem Diamonds's OCF Margin % distribution charts can be found below:
* The bar in red indicates where Gem Diamonds's OCF Margin % falls into.
* For Operating Data section: All numbers are indicated by the unit behind each term and all currency related amount are in USD. * For other sections: All numbers are in millions except for per share data, ratio, and percentage. All currency related amount are indicated in the company's associated stock exchange currency.
Gem Diamonds (GMDMF) has a OCF Margin % of 27.12% as of Dec. 2025. OCF Margin is the ratio of Cash Flow from Operations to Total Revenue. View historical data on Gem Diamonds and its competitors. This is 21% below median its historical median of 34.35. Over the past decade, Gem Diamonds' OCF Margin % has ranged from 6.40 to 51.76. According to the industry distribution chart, Gem Diamonds ranks #389 out of 846 companies in the Metals & Mining industry, placing it in the top 46%.
Is Gem Diamonds' OCF Margin % too high?
Gem Diamonds' current OCF Margin % of 27.12% is 21% below median its 10-year median of 34.35. Over the past 10 years, this metric has ranged from a low of 6.40 to a high of 51.76. The Metals & Mining industry median OCF Margin % is 4.47. Gem Diamonds' value of 27.12% is 507.4% above this industry median. Based on the distribution chart, Gem Diamonds ranks #389 out of 846 companies in the Metals & Mining industry, which is above the industry midpoint.
How does Gem Diamonds' OCF Margin % compare to HL?
According to the Metals & Mining industry distribution chart, Gem Diamonds ranks #389 out of 846 companies for OCF Margin %. This puts Gem Diamonds in the upper half of its industry. The industry median OCF Margin % is 4.47. Gem Diamonds' value of 27.12% is 507.4% above this benchmark. Historically, Gem Diamonds' own OCF Margin % has ranged from 6.40 to 51.76 over the past decade. While the company's 10-year median is 34.35 vs. the industry median of 4.47, Gem Diamonds has consistently been above the industry average. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good OCF Margin % for a Metals & Mining company?
The median OCF Margin % among Metals & Mining companies is 4.47, based on 846 companies in the industry. Companies in the top quartile (top 25%) have a OCF Margin % significantly above this median, while those in the bottom quartile fall well below. However, OCF Margin % should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Gem Diamonds's current OCF Margin % of 27.12% is 507.4% above the industry median. Use the industry distribution chart on this page to see where any company falls relative to its peers.
What does a high OCF Margin % mean?
A high OCF Margin % can signal that a stock is expensive relative to its fundamentals. OCF Margin is the ratio of Cash Flow from Operations to Total Revenue. View historical data on Gem Diamonds and its competitors. For the Metals & Mining industry, the median OCF Margin % is 4.47 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Gem Diamonds's current OCF Margin % is 27.12%, which is 21% below median its own 10-year median of 34.35. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Gem Diamonds stock overvalued right now?
Based on GuruFocus' analysis, Gem Diamonds (GMDMF) is currently considered Significantly Overvalued. The stock's GF Value™ is $0.03, compared to a current price of $0.04 — trading 43.8% above its estimated fair value. The current OCF Margin % is 27.12%, which is 21% below median its 10-year median of 34.35 and 507.4% above the Metals & Mining industry median of 4.47. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is OCF Margin % calculated?
OCF Margin % is calculated from a company's financial statements. For Gem Diamonds (GMDMF), the current OCF Margin % is 27.12% as of Dec. 2025. GuruFocus calculates this using data sourced from SEC filings and annual reports. See the calculation section and 30-year financial data on this page for the full breakdown.
Gem Diamonds Ltd is a United Kingdom-based company engaged in the exploration and development of diamond mines. The company's geographical segments include Lesotho (diamond mining activities); Belgium (sales, marketing, and manufacturing of diamonds); and BVI, RSA, the UK, and Cyprus (technical and administrative services) and Botswana (diamond mining activities, currently on care and maintenance). It generates maximum revenue from the Belgium region. Its projects include Letseng Diamond mine and Ghaghoo Diamond mine. The company's revenue is derived from mining activities, polished manufacturing margins, and diamond analysis and manufacturing services.
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