Diamond levelled with a fine strike in the 76th minute, finishing off a well-worked free-kick.
David Elebert could have claimed the points for Accies in the dying minutes, but his header inched wide.
The draw extends Aberdeen's winless streak to nine matches, but extended Hamilton's lead over bottom side Falkirk to three points at the foot of the Scottish Premier League table.
Hamilton had the majority of possession in the opening minutes, Easton and Marco Paixao testing Jamie Langfield in the Aberdeen goal with some inventive play.
In the 10th minute, Aberdeen's Michael Paton should have done better with a shot that he blasted over the bar from 12 yards out.
Flavio Paixao could have opened the scoring in the 17th minute when Easton sent over a searching cross from the left, but the Portuguese forward was a yard off the pace and the opportunity was lost.
Moments later, David van Zanten volleyed in a right-footed shot from distance that dragged wide of the Dons goal.
Elebert glanced in a header from close range shortly after the half-hour mark that was just past Langfield's left-hand post before Aberdeen's Ricky Foster kept out an Alex Neil effort from the right-hand side of the penalty area.
Hamilton continued to dominate the half and the Paixao twins linked up well to threaten but lacked the killer finish.
With five minutes of the first-half left, Charlie Mulgrew stepped up to place one of his trademark free-kicks and Hamilton keeper Tomas Cerny was at full stretch to parry the ball out for a corner.
Van Zanten almost gave Accies a half-time lead with the last chance of the first 45 minutes when he sent a glancing header inches past the post.
A quick succession of Aberdeen corners immediately after the restart failed to significantly test the Accies defence as the Dons came out from the interval looking more determined than their lacklustre first-half performance.
Steven MacLean's powerful effort from just outside the box swerved past Cerny's right-hand post.
The deadlock was broken when Flavio Paixao headed Easton's corner beyond Langfield.
Moments later, Canning managed to deflect over a Gary McDonald shot from 10 yards out as the Dons tried to quickly claw back an equaliser.
Diamond levelled for the Dons after Mulgrew's free-kick was knocked into the defender's path by MacLean.
Flavio Paixao was fortunate to escape a booking after throwing himself to the ground and claiming for a penalty with five minutes remaining.
He almost redeemed himself two minutes later with a powerful shot that cleared the crossbar.
Hamilton's James McArthur flighted in a searching ball as injury time beckoned, but Elebert's header failed to reach the target and the sides shared the points.
Live text and stats
Saturday, 6 March 2010
Scottish Premier
Home Team
Score
Away Team
Time
Hamilton
1-1
Aberdeen
FT
(HT 0-0)
Flavio Paixao 62
Diamond 76
Hamilton
01 Cerny
04 Canning yellow card
05 van Zanten (Antoine-Curier 58)
06 McLaughlin yellow card
15 Easton
25 Elebert yellow card
08 McArthur
27 Mensing yellow card
10 Neil
18 Flavio Paixao
23 Imrie
Substitutes
19 Murdoch,
02 McClenahan,
36 Crawford,
12 Evans,
09 Antoine-Curier,
21 Marco Paixao,
39 Riley
Aberdeen
01 Langfield
02 Mulgrew
03 Foster
05 Diamond yellow card
04 McDonald
07 Paterson
08 Kerr
11 Aluko (Megginson 87)
14 Young yellow card (Mackie 72)
09 MacLean
24 Paton yellow card
Substitutes
21 Nelson,
22 Ifil,
16 Duff,
20 Marshall,
26 Jack,
10 Mackie,
31 Megginson
Ref: FinnieAtt: 2,030
HAMILTON ABERDEEN
Possession
Hamilton 49%
Aberdeen 51%
Attempts on target
Hamilton 1
Aberdeen 3
Attempts off target
Hamilton 7
Aberdeen 2
Corners
Hamilton 9
Aberdeen 7
Fouls
Hamilton 11
Aberdeen 11
Final Result
Full Time
90:00+3:06 The referee signals the end of the game.
90:00+2:06 The referee blows for offside. James McArthur takes the free kick.
90:00+1:36 Mitchel Megginson challenges Martin Canning unfairly and gives away a free kick. Direct free kick taken by Tomas Cerny.
89:32 Outswinging corner taken by Michael Paton from the right by-line, Unfair challenge on Tomas Cerny by Darren Mackie results
in a free kick. Tomas Cerny restarts play with the free kick.
89:08 Foul by David Elebert on Steven MacLean, free kick awarded. Charlie Mulgrew takes the direct free kick.
88:40 David Elebert has a headed effort at goal from close in which goes wide left of the target.
88:01 Corner taken left-footed by Brian Easton, clearance by Zander Diamond.
86:23 Substitution Mitchel Megginson replaces Sone Aluko.
86:23 Flavio Paixao produces a right-footed shot from just outside the area that goes harmlessly over the bar.
83:15 Charlie Mulgrew decides to take the corner short. Charlie Mulgrew produces a cross, Gary McDonald takes a shot. Save by Tomas
Cerny.
82:31 James McArthur fouled by Darren Mackie, the ref awards a free kick. David Elebert takes the direct free kick.
81:51 The offside flag is raised against Mickael Antoine-Curier. Jamie Langfield takes the free kick.
79:39 The referee penalises David Elebert for handball. Charlie Mulgrew restarts play with the free kick.
78:10 Michael Paton gives away a free kick for an unfair challenge on Brian Easton. David Elebert takes the direct free kick.
75:51 Assist on the goal came from Steven MacLean.
75:51 GOAL - Zander Diamond:Hamilton 1 - 1 Aberdeen Goal scored by Zander Diamond from the edge of the penalty box to the bottom right corner of the goal. Hamilton 1-1 Aberdeen.
75:01 Charlie Mulgrew restarts play with the free kick.
75:01 Booking Martin Canning receives a yellow card.
74:58 Free kick awarded for a foul by Martin Canning on Sone Aluko.
71:16 Substitution Darren Mackie on for Derek Young.
70:13 Inswinging corner taken left-footed by Brian Easton from the right by-line, save by Jamie Langfield.
68:12 David Elebert takes the free kick.
68:12 Booking David Elebert is shown a yellow card.
68:11 Booking Zander Diamond is cautioned.
68:02 Unfair challenge on Douglas Imrie by Zander Diamond results in a free kick.
64:43 Douglas Imrie produces a left-footed shot from the edge of the area and misses to the left of the target.
63:33 Inswinging corner taken by Derek Young, clearance by James McArthur.
62:39 Free kick awarded for a foul by Flavio Paixao on Richard Foster. Richard Foster takes the direct free kick.
61:38 Assist by Brian Easton.
61:38 GOAL - Flavio Paixao:Hamilton 1 - 0 Aberdeen Flavio Paixao finds the net with a headed goal from inside the six-yard box. Hamilton 1-0 Aberdeen.
61:04 Corner taken by Brian Easton,
58:57 Handball decision goes against David Elebert. Jamie Langfield takes the free kick.
57:47 Flavio Paixao restarts play with the free kick.
57:47 Substitution David van Zanten goes off and Mickael Antoine-Curier comes on.
57:47 Free kick awarded for an unfair challenge on Brian Easton by Derek Young.
56:45 Michael Paton produces a right-footed shot from outside the penalty box and misses right.
55:49 Mark Kerr fouled by James McArthur, the ref awards a free kick. Jamie Langfield restarts play with the free kick.
55:04 Steven MacLean is adjudged to have handled the ball. David Elebert takes the direct free kick.
51:52 Free kick awarded for a foul by Charlie Mulgrew on Brian Easton. Tomas Cerny takes the free kick.
51:16 Inswinging corner taken by Charlie Mulgrew from the right by-line, Brian Easton makes a clearance.
48:00 The referee blows for offside. Jamie Langfield takes the free kick.
47:19 Booking Michael Paton is cautioned by the ref for unsporting behaviour.
45:49 Corner taken by Derek Young, Alex Neil manages to make a clearance. Corner taken right-footed by Derek Young, Brian Easton
manages to make a clearance.
45:01 The second half begins.
Half Time
45:00+1:13 The ref blows to end the first period.
45:00+0:06 Flavio Paixao produces a cross, Header from close in by David van Zanten misses to the right of the goal.
43:04 Foul by Mark Kerr on Alex Neil, free kick awarded. Shot comes in from Douglas Imrie from the free kick.
41:13 James McArthur challenges Charlie Mulgrew unfairly and gives away a free kick. Jamie Langfield restarts play with the free
kick.
38:34 Charlie Mulgrew shoots direct from the free kick, save by Tomas Cerny. Corner from the right by-line taken by Derek Young,
clearance made by Alex Neil.
38:34 Booking Simon Mensing receives a yellow card for dissent.
38:34 Booking The referee books Mark McLaughlin for unsporting behaviour.
38:29 Michael Paton fouled by Mark McLaughlin, the ref awards a free kick.
37:21 Unfair challenge on Flavio Paixao by Derek Young results in a free kick. The free kick is swung in right-footed by Flavio
Paixao, save by Jamie Langfield.
35:38 Effort from the edge of the area by Flavio Paixao goes wide of the left-hand upright.
33:34 Brian Easton takes the inswinging corner, Zander Diamond fouled by Mark McLaughlin, the ref awards a free kick. Direct free
kick taken by Jamie Langfield.
32:25 Free kick awarded for a foul by Simon Mensing on Steven MacLean. Charlie Mulgrew restarts play with the free kick.
30:35 Brian Easton produces a cross, David Elebert has a headed effort at goal from close range which goes wide of the left-hand
upright.
30:35 Booking The referee books Derek Young for unsporting behaviour.
30:31 Free kick awarded for an unfair challenge on Douglas Imrie by Derek Young.
27:42 Corner taken left-footed by Brian Easton, Michael Paton makes a clearance. Corner from the left by-line taken by Flavio Paixao,
Zander Diamond manages to make a clearance.
27:20 Steven MacLean is caught offside. Free kick taken by Martin Canning.
22:45 Flavio Paixao gives away a free kick for an unfair challenge on Richard Foster. Derek Young takes the free kick.
18:42 Corner taken by Flavio Paixao from the left by-line, save by Jamie Langfield.
16:11 Centre by Brian Easton.
13:34 Foul by Mark McLaughlin on Derek Young, free kick awarded. The free kick is swung in left-footed by Charlie Mulgrew. The referee
blows for offside against Steven MacLean. Tomas Cerny takes the indirect free kick.
12:21 Free kick awarded for a foul by Zander Diamond on Douglas Imrie. David Elebert takes the direct free kick.
10:02 Michael Paton produces a right-footed shot from just outside the area that goes harmlessly over the target.
8:56 The referee blows for offside. Indirect free kick taken by Tomas Cerny.
8:18 The ball is swung over by Flavio Paixao, save by Jamie Langfield.
7:45 Mark Kerr fouled by James McArthur, the ref awards a free kick. Free kick taken by Mark Kerr.
6:48 Corner taken by Flavio Paixao from the left by-line, save by Jamie Langfield.
Correction - 6:16 Sone Aluko is caught offside. Free kick taken by Martin Canning.
6:16 The assistant referee flags for offside against Sone Aluko. Indirect free kick taken by Tomas Cerny.
5:37 Corner taken by Flavio Paixao, save by Jamie Langfield.
4:05 Centre by David van Zanten, save by Jamie Langfield.
1:20 The referee blows for offside against Douglas Imrie. Jamie Langfield takes the free kick.
0:00 The match has kicked off.
Live text and data provided by The Press Association.
Source: BBC Sport
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