Diablo II/Shields

A character can equip one shield, and they occupy 2x2, 2x3 or 2x4 inventory or stash space when not equipped:

Size
2x2	2x3		2x4
Buckler Small Shield	Large Shield Spiked Shield	Kite Shield Bone Shield	Gothic Shield
Defender Round Shield	Scutum Barbed Shield	Dragon Shield Grim Shield	Ancient Shield

Equipping some shields incurs a penalty to walk/run speed:

Penalty
0		5	10
Buckler Small Shield	Spiked Shield Kite Shield Bone Shield	Large Shield Gothic Shield	Tower Shield
Defender Round Shield	Barbed Shield Dragon Shield Grim Shield	Scutum Ancient Shield	Pavise

Every shield has a base Chance to Block, to which a class bonus is added:

Class(es)	Druid / Necromancer / Sorceress	Amazon / Assassin / Barbarian	Paladin
Chance to Block	+20%	+25%	+30%

This results in the following Chances to Block:

Shield	Chance to Block
	Base	Dru / Nec / Sor	Ama / Ass / Bar	Paladin
Buckler	0%	20%	25%	30%
Small Shield	5%	25%	30%	35%
Large Shield	12%	32%	37%	42%
Spiked Shield	10%	30%	35%	40%
Kite Shield	8%	28%	33%	38%
Bone Shield	20%	40%	45%	50%
Tower Shield	24%	44%	49%	54%
Gothic Shield	16%	36%	41%	46%
Defender	10%	30%	35%	40%
Round Shield	12%	32%	37%	42%
Scutum	14%	34%	39%	44%
Barbed Shield	17%	37%	42%	47%
Dragon Shield	18%	38%	43%	48%
Grim Shield	20%	40%	45%	50%
Pavise	24%	44%	49%	54%
Ancient Shield	16%	36%	41%	46%

Shields can also be used to inflict damage by a Paladin using Smite.

Normal

Shield	Quality Level	Required		Defense		Durability	Max sockets at Item Level
		Level	Strength	Min	Max		< 26	26-40	> 40
Buckler	1		12	4	6	12	1	1	1
Small Shield	5		22	8	10	16	2	2	2
Large Shield	11		34	12	14	24	3	3	3
Spiked Shield	11		30	15	25	40	2	2	2
Kite Shield	15		47	16	18	30	3	3	3
Bone Shield	19		25	10	30	40	2	2	2
Tower Shield	22		75	22	25	60	3	3	3
Gothic Shield	30		60	30	35	40	3	3	3

Exceptional

Shield	Quality Level	Required		Defense		Durability	Max sockets at Item Level
		Level	Strength	Min	Max		< 26	26-40	> 40
Defender	34	22	38	41	49	68	1	1	1
Round Shield	37	25	53	47	55	64	2	2	2
Scutum	42	25	71	53	61	62	3	3	3
Barbed Shield	42	25	65	58	78	55	2	2	2
Dragon Shield	45	25	91	59	67	76	3	3	3
Grim Shield	48	25	58	50	150	70	2	2	2
Pavise	50	25	133	68	78	72	3	3	3
Ancient Shield	56	25	110	80	93	80	3	3	3

Affixes

Maximum Required Level (RLvl) for any magic or rare shield is 58 (maximum Affix Level (ALvL) 65).

The maximum bonuses available for magic and rare shields are summarized below. There are 10 prefix groups:

Prefix	Group	Bonus(es)	Min	Max	Alvl	RLvl	Freq
Holy	101	Enhanced Defense	81%	100%	36	27	6
Vulpine	107	Damage Taken Goes to Mana	7%	12%	9	6	3
Glowing	112	Light Radius	2	2	6	4	1
Serpent's	115	Mana	11	20	14	10	3
Prismatic	116	All Resistances	16	20	39	31	4
Cobalt	117	Cold Resist	21%	30%	18	13	3
Garnet	118	Fire Resist	21%	30%	18	13	3
Coral	119	Lightning Resist	21%	30%	18	13	3
Jade	120	Poison Resist	21%	30%	18	13	3
Priest's	125	Paladin Skill Levels	2	2	65	58	2

There are 12 suffix groups:

Suffix	Group	Bonus(es)	Min	Max	Alvl	RLvl	Freq
of Life	1	Damage Reduced	4	7	41	33	4
of Guarding	2	Magic Damage Reduced	3	3	32	24	4
of Spikes	6	Attacker Takes Damage	4	6	21	15	4
of Deflecting	8	Increased Chance of Blocking	20%	20%	11	8	6
		Faster Block Rate	30	30
of Thawing	11	Half Freeze Duration	1	1	10	7	4
of Maiming	14	Maximum Damage	3	4	42	34	4
of Equilibrium	18	Faster Hit Recovery	17	17	9	6	4
of Regeneration	19	Replenish Life	3	5	40	30	4
of Light	25	Light Radius	1	1	6	4	1
		Attack Rating	15	15
of Defiance	29	Poison Length Reduced	75%	75%	25	18	2
of Simplicity	30	Requirements	-30%	-30%	25	18	2
of the Ox	31	Strength	6	9	45	37	3

Prefixes

Prefix	Group	Bonus(es)	Min	Max	Alvl	RLvl	Freq
Sturdy	101	Enhanced Defense	10%	20%	1	1	9
			21%	30%	4	3	9
Strong			31%	40%	9	6	8
Glorious			41%	50%	19	14	8
Blessed			51%	65%	25	18	7
Saintly			66%	80%	31	23	7
Holy			81%	100%	36	27	6
Vulpine	107	Damage Taken Goes to Mana	7%	12%	9	6	3
Glimmering	112	Light Radius	1	1	1	1	1
Glowing			2	2	6	4	1
Lizard's	115	Mana	1	2	1-2	1	4
			3	5	3	2	4
Snake's			5	10	6	4	4
Serpent's			11	20	14	10	3
Prismatic	116	All Resistances	16	20	39	31	4
Azure	117	Cold Resist	5%	5%	1-4	1	3
			5%	10%	5	3	2
Lapis			11%	20%	12	9	4
Cobalt			21%	30%	18	13	3
Crimson	118	Fire Resist	5%	5%	1-4	1	3
			5%	10%	5	3	4
Russet			11%	20%	12	9	4
Garnet			21%	30%	18	13	3
Tangerine	119	Lightning Resist	5%	5%	1-4	1	3
			5%	10%	5	3	4
Ocher			11%	20%	12	9	4
Coral			21%	30%	18	13	3
Beryl	120	Poison Resist	5%	5%	1-4	1	3
			5%	10%	5	3	4
Viridian			11%	20%	12	9	4
Jade			21%	30%	18	13	3
Monk's	125	Paladin Skill Levels	1	1	35	27	4
Priest's			2	2	65	58	2

Suffixes

Suffix	Group	Bonus(es)	Min	Max	Alvl	RLvl	Freq
of Health	1	Damage Reduced	1	1	7	5	4
of Protection			2	2	24	18	4
of Absorption			3	3	32	24	4
of Life			4	7	41	33	4
of Warding	2	Magic Damage Reduced	1	1	7	5	4
of the Sentinel			2	2	24	18	4
of Guarding			3	3	32	24	4
of Thorns	6	Attack Takes Damage	1	1	1-13	1	4
			1	3	14	10	4
of Spikes			4	6	21	15	4
of Blocking	8	Increased Chance of Blocking	10%	10%	1	1	7
		Faster Block Rate	15	15
of Deflecting		Increased Chance of Blocking	20%	20%	11	8	6
		Faster Block Rate	30	30
of Thawing	11	Half Freeze Duration	1	1	10	7	4
of Maiming	14	Maximum Damage	3	4	42	34	4
of Balance	18	Faster Hit Recovery	10	10	5	3	4
of Equilibrium			17	17	9	6	4
of Regeneration	19	Replenish Life	3	5	40	30	4
of Light	25	Light Radius	1	1	6	4	1
		Attack Rating	15	15
of Amelioration	29	Poison Length Reduced	50%	50%	18	13	3
of Defiance			75%	75%	25	18	2
of Ease	30	Requirements	-20%	-20%	15	11	3
of Simplicity			-30%	-30%	25	18	2
of Strength	31	Strength	1	2	12	8	3
of Might			3	5	33	25	3
of the Ox			6	9	45	37	3