SF Diamond Co.,Ltd. (SZSE:300179) shareholders are no doubt pleased to see that the share price has bounced 29% in the last month, although it is still struggling to make up recently lost ground. Not all shareholders will be feeling jubilant, since the share price is still down a very disappointing 29% in the last twelve months.

Although its price has surged higher, it's still not a stretch to say that SF DiamondLtd's price-to-earnings (or "P/E") ratio of 29x right now seems quite "middle-of-the-road" compared to the market in China, where the median P/E ratio is around 31x. However, investors might be overlooking a clear opportunity or potential setback if there is no rational basis for the P/E.

For example, consider that SF DiamondLtd's financial performance has been poor lately as its earnings have been in decline. One possibility is that the P/E is moderate because investors think the company might still do enough to be in line with the broader market in the near future. If you like the company, you'd at least be hoping this is the case so that you could potentially pick up some stock while it's not quite in favour.

Is There Some Growth For SF DiamondLtd?

The only time you'd be comfortable seeing a P/E like SF DiamondLtd's is when the company's growth is tracking the market closely.

Retrospectively, the last year delivered a frustrating 10% decrease to the company's bottom line. Even so, admirably EPS has lifted 88% in aggregate from three years ago, notwithstanding the last 12 months. Although it's been a bumpy ride, it's still fair to say the earnings growth recently has been more than adequate for the company.

This is in contrast to the rest of the market, which is expected to grow by 41% over the next year, materially higher than the company's recent medium-term annualised growth rates.

With this information, we find it interesting that SF DiamondLtd is trading at a fairly similar P/E to the market. Apparently many investors in the company are less bearish than recent times would indicate and aren't willing to let go of their stock right now. They may be setting themselves up for future disappointment if the P/E falls to levels more in line with recent growth rates.

The Bottom Line On SF DiamondLtd's P/E

Its shares have lifted substantially and now SF DiamondLtd's P/E is also back up to the market median. Generally, our preference is to limit the use of the price-to-earnings ratio to establishing what the market thinks about the overall health of a company.

We've established that SF DiamondLtd currently trades on a higher than expected P/E since its recent three-year growth is lower than the wider market forecast. Right now we are uncomfortable with the P/E as this earnings performance isn't likely to support a more positive sentiment for long. Unless the recent medium-term conditions improve, it's challenging to accept these prices as being reasonable.

The company's balance sheet is another key area for risk analysis. You can assess many of the main risks through our free balance sheet analysis for SF DiamondLtd with six simple checks.

If these risks are making you reconsider your opinion on SF DiamondLtd, explore our interactive list of high quality stocks to get an idea of what else is out there.

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This article by Simply Wall St is general in nature. We provide commentary based on historical data and analyst forecasts only using an unbiased methodology and our articles are not intended to be financial advice. It does not constitute a recommendation to buy or sell any stock, and does not take account of your objectives, or your financial situation. We aim to bring you long-term focused analysis driven by fundamental data. Note that our analysis may not factor in the latest price-sensitive company announcements or qualitative material. Simply Wall St has no position in any stocks mentioned.