An order block is not just 'a candle before a move' the way most retail charts label it. It is the last piece of resting opposing liquidity that institutional flow used to fill a large position before price displaced away from it. On XAU/USD, where daily ranges regularly run $25 to $45, learning to separate genuine order blocks from random consolidation candles is what separates a repeatable entry method from guesswork.
1. What actually makes a candle an order block
A bullish order block is the final bearish (down-close) candle immediately before an impulsive up move that breaks and closes beyond the most recent swing high. The key word is displacement: the move away from the candle should be a full-bodied candle or series of candles with minimal overlapping wicks, not a slow grind. If gold prints a down candle at $2,618 and the next three candles close at $2,624, $2,631, and $2,639 with small wicks, the $2,618 candle is a candidate order block. If instead price grinds up $2 at a time with long wicks in both directions, there was no real displacement and the zone is unreliable.
Bearish order blocks work in reverse: the last up-close candle before a displacement leg down.
2. Why liquidity context matters more than the candle shape
Two visually identical candles can have completely different reliability depending on what happened just before them. An order block that forms immediately after price sweeps a cluster of equal lows (stops sitting below a double bottom, for example) is far more likely to hold than one that forms in the middle of an already-extended range with no liquidity taken. Before marking a zone, check the 15 to 30 minutes prior on the H1 chart for a stop run: a quick spike below a prior low followed by immediate rejection.
3. Marking the zone and choosing your entry price
Use the full high-to-low range of the order block candle, not just the body. Within that range, the 50 percent midpoint (the equilibrium price) is generally the highest-probability entry, since price frequently reacts before reaching the far extreme. For example, if the order block candle has a high of $2,622 and a low of $2,614, the midpoint sits at $2,618. Place a limit order there rather than at $2,614, since a large percentage of order blocks are only tapped to the midpoint before continuation resumes.
Stop loss:one ATR(14) below the low of the order block, or roughly 1.2x the block's own range.Target:the most recent unmitigated liquidity pool, typically an equal-highs cluster or the prior daily high.
4. Invalidation rules
A wick that taps into the zone does not invalidate it. What invalidates a bullish order block is a full candle body closing below the low of the zone on the timeframe you marked it on. On a 4-hour setup, a single 15-minute close through the zone is noise; wait for the 4-hour candle itself to close through before abandoning the level. Blocks that have already been mitigated once and retested successfully carry lower probability on a third touch, since the resting liquidity behind them has typically been consumed.
5. A worked scenario
Suppose gold sweeps a prior low at $2,605 during the London session, prints a down candle with a low of $2,602 and a high of $2,609, then displaces upward through $2,630 over the next two hours. That $2,602-$2,609 candle is your bullish order block. Your entry sits near $2,605.50 (the midpoint), stop loss near $2,598, and first target at the prior high of $2,630, giving roughly a 1:3.5 risk-to-reward ratio before management.
