This guide focuses on leve allotment efficiency on your way to becoming a level 50 Goldsmith. How you choose to approach leveling and deciding on which leves to use is up to you, but hopefully some of this information will come in handy.
Some points before moving forward:

Each listing assumes you have reached the required level with no experience past 0. This can be demonstrated in the second listing, Pretty Enough to Eat, which provides 11,616 XP when turned in at high quality. The level 10 XP requirement is 11,800 – the number of HQ turn-ins listed is two, because it is above the amount the leve pays out on its own. Keep this is mind moving forward, because you will rarely ever be at 0 XP right when you reach a level.
Repeatable/Charity/triple turn-in leves are noted with asterisks next to their experience numbers. These listings assume you intend to make full use of these leves and turn in the requirements all three times, and hence their listed XP numbers are three times the base (plus bonuses on HQ turn-ins).
To be 100% honest, I recommend avoiding leves until level 20.
If you are looking for mass-leveling I highly recommend repeatables/triples. If for shorter bursts, Ingenuity may be better suited to your budget (though they require travel).

If you're looking for something more compact to have on hand, head over to my Complete Goldsmith Leves Guide.
Most efficient leve-wise options per tier:

Level 10: Point of Honor
Level 15: Bad to the Bone
Level 20: King for a Day; Dog Tags Are For Dogs
Level 25: All Booked Up; Dancing with The Stars
Level 30: A Little Bird Told Me; Get The Green Stuff
Level 35: Burning The Midnight Oil; Fashion and Faith
Level 40: It's My Business to Know Things; If You've Got It, Flaunt It
Level 45: The Big Red; Light in The Darkness

Remember: Crafting XP is not taken into consideration in these numbers!
(If you see any mis-types on the numbers, please let me know. I've gone through these a couple of times looking for mistakes, but they always seem to slip through.)
Level 10 leves

All That Glitters (Ul'dah) - 2230 XP (HQ: 6690 XP)
Requires: 1 Copper Ear Cuffs
Completions to level: Level 10 (11,800 XP): 6 (HQ: 2)
Level 11 (15,600 XP): 7 (HQ: 3)
Level 12 (19,600 XP): 9 (HQ: 3)
Level 13 (23,700 XP): 11 (HQ: 4)
Level 14 (26,400 XP): 12 (HQ: 4)
All at once (97100 XP needed): 44 (15)
Straight from 10-20 (300200 XP): 135 (HQ: 45)

An Offer We Can't Refuse (Ul'dah) - 3849 XP (HQ: 11547 XP)
Requires: 1 Decorated Bone Staff
Completions to level: Level 10-11 (11,800 XP): 3 (HQ: 2)
Level 11-12 (15,600 XP): 4 (HQ: 2)
Level 12-13 (19,600 XP): 6 (HQ: 2)
Level 13-14 (23,700 XP): 7 (HQ: 3)
Level 14-15 (26,400 XP): 7 (HQ: 3)
All at once (97100 XP needed): 26 (HQ: 9)
Straight from 10-20 (300200 XP): 78 (HQ: 26)

The Tusk at Hand (Ul'dah) - 3872 XP (HQ: 11616 XP)
Requires: 1 Fang Earrings
Completions to level: Level 10-11 (11,800 XP): 4 (HQ: 2)
Level 11-12 (15,600 XP): 5 (HQ: 2)
Level 12-13 (19,600 XP): 6 (HQ: 2)
Level 13-14 (23,700 XP): 7 (HQ: 3)
Level 14-15 (26,400 XP): 7 (HQ: 3)
All at once (97100 XP needed): 26 (HQ: 9)
Straight from 10-20 (300200 XP): 77 (HQ: 26)

Point of Honor (Horizon) - 4057 XP (HQ: 12171 XP)
Requires: 1 Amateur's Needle
Completions to level: Level 10-11 (11,800 XP): 3 (HQ: 1)
Level 11-12 (15,600 XP): 4 (HQ: 2)
Level 12-13 (19,600 XP): 5 (HQ: 2)
Level 13-14 (23,700 XP): 6 (HQ: 2)
Level 14-15 (26,400 XP): 7 (HQ: 3)
All at once (97100 XP needed): 24 (HQ: 8)
Straight from 10-20 (300200 XP): 74 (HQ: 25)

Gorgeous Gorget (Horizon) - 3872 XP (HQ: 11616 XP)
Requires: 1 Brass Gorget
Completions to level: Level 10-11 (11,800 XP): 4 (HQ: 2)
Level 11-12 (15,600 XP): 5 (HQ: 2)
Level 12-13 (19,600 XP): 6 (HQ: 2)
Level 13-14 (23,700 XP): 7 (HQ: 3)
Level 14-15 (26,400 XP): 7 (HQ: 3)
All at once (97100 XP needed): 26 (HQ: 9)
Straight from 10-20 (300200 XP): 77 (HQ: 26)
Level 15 leves

Brothers in Arms (Ul'dah) - 4057 XP (HQ: 12171 XP)
Requires: 1 Brass Wristlets of Crafting
Completions to level: Level 15-16 (30,500 XP): 8 (HQ: 3)
Level 16-17 (35,400 XP): 9 (HQ: 3)
Level 17-18 (40,500 XP): 10 (HQ: 4)
Level 18-19 (45,700 XP): 12 (HQ: 4
Level 19-20 (51,000 XP): 13 (HQ: 5)
All at once (203,100 XP needed): 51 (HQ: 17)
Straight from 15-25 (561,200 XP): 139 (HQ: 47)

Forever 21K (Ul'dah) - 6109 XP (HQ: 18327 XP)
Requires: 1 Brass Ring
Completions to level: Level 15-16 (30,500 XP): 5 (HQ: 2)
Level 16-17 (35,400 XP): 6 (HQ: 2)
Level 17-18 (40,500 XP): 7 (HQ: 3)
Level 18-19 (45,700 XP): 8 (HQ: 3)
Level 19-20 (51,000 XP): 9 (HQ: 3)
All at once (203,100 XP needed): 34 (HQ: 12)
Straight from 15-25 (561,200 XP): 92 (HQ: 31)

Bad to the Bone (Ul'dah) - 6573 XP (HQ: 19719 XP)
Requires: 1 Brass Circlet (Sunstone)
Completions to level: Level 15-16 (30,500 XP): 5 (HQ: 2)
Level 16-17 (35,400 XP): 6 (HQ: 2)
Level 17-18 (40,500 XP): 7 (HQ: 3)
Level 18-19 (45,700 XP): 7 (HQ: 3)
Level 19-20 (51,000 XP): 8 (HQ: 3)
All at once (203,100 XP needed): 31 (HQ: 11)
Straight from 15-25 (561,200 XP): 86 (HQ: 29)

Bad Guys Eat Brass (Drybone) - 6109 XP (HQ: 18327 XP)
Requires: 1 Brass Ring of Crafting
Completions to level: Level 15-16 (30,500 XP): 5 (HQ: 2)
Level 16-17 (35,400 XP): 6 (HQ: 2)
Level 17-18 (40,500 XP): 7 (HQ: 3)
Level 18-19 (45,700 XP): 8 (HQ: 3)
Level 19-20 (51,000 XP): 9 (HQ: 3)
All at once (203,100 XP needed): 34 (HQ: 12)
Straight from 15-25 (561,200 XP): 92 (HQ: 31)

Sharp Worlds (Drybone) - 4057 XP (HQ: 12171 XP)
Requires: 1 Bat Fang Needle
Completions to level: Level 15-16 (30,500 XP): 8 (HQ: 3)
Level 16-17 (35,400 XP): 9 (HQ: 3)
Level 17-18 (40,500 XP): 10 (HQ: 4)
Level 18-19 (45,700 XP): 12 (HQ: 4
Level 19-20 (51,000 XP): 13 (HQ: 5)
All at once (203,100 XP needed): 51 (HQ: 17)
Straight from 15-25 (561,200 XP): 139 (HQ: 47)
Level 20 leves

Perk of Fiction (Ul'dah) - 6373 XP (HQ: 19119 XP)
Requires: 1 Coral Ring
Completions to level: Level 20-21 (56,600 XP): 9 (HQ: 3)
Level 21-22 (63,900 XP): 11 (HQ: 4)
Level 22-23 (71,400 XP): 12 (HQ: 4)
Level 23-24 (79,100 XP): 13 (HQ: 5)
Level 24-25 (87,100 XP): 14 (HQ: 5)
All at once (358,100 XP needed): 57 (HQ: 19)
Straight from 20-30 (984,000 XP): 155 (HQ: 52)

You Burnt It, You Bought It (Ul'dah) - 10289 XP (HQ: 30867 XP)
Requires: 1 Wind Brand
Completions to level: Level 20-21 (56,600 XP): 6 (HQ: 2)
Level 21-22 (63,900 XP): 7 (HQ: 3)
Level 22-23 (71,400 XP): 8 (HQ: 3)
Level 23-24 (79,100 XP): 8 (HQ: 3)
Level 24-25 (87,100 XP): 9 (HQ: 3)
All at once (358,100 XP needed): 35 (HQ: 12)
Straight from 20-30 (984,000 XP): 96 (HQ: 32)

King for a Day (Ul'dah) - 21993* XP (HQ: 65979* XP)
Requires: 3 Decorated Copper Scepter (9 total)
Completions to level: Level 20-21 (56,600 XP): 3 (HQ: 1)
Level 21-22 (63,900 XP): 3 (HQ: 1)
Level 22-23 (71,400 XP): 4 (HQ: 2)
Level 23-24 (79,100 XP): 4 (HQ: 2)
Level 24-25 (87,100 XP): 4 (HQ: 2)
All at once (358,100 XP needed): 17 (HQ: 6)
Straight from 20-30 (984,000 XP): 45 (HQ: 15)

Dog Tags Are for Dogs (Quarrymill) - 21993* XP (HQ: 65979* XP)
Requires: 3 Brass Ring (9 total)
Completions to level: Level 20-21 (56,600 XP): 3 (HQ: 1)
Level 21-22 (63,900 XP): 3 (HQ: 1)
Level 22-23 (71,400 XP): 4 (HQ: 2)
Level 23-24 (79,100 XP): 4 (HQ: 2)
Level 24-25 (87,100 XP): 4 (HQ: 2)
All at once (358,100 XP needed): 17 (HQ: 6)
Straight from 20-30 (984,000 XP): 45 (HQ: 15)

Music to Their Ears (Quarrymill) - 6373 XP (HQ: 19119 XP)
Requires: 1 Brass Ear Cuffs
Completions to level: Level 20-21 (56,600 XP): 9 (HQ: 3)
Level 21-22 (63,900 XP): 11 (HQ: 4)
Level 22-23 (71,400 XP): 12 (HQ: 4)
Level 23-24 (79,100 XP): 13 (HQ: 5)
Level 24-25 (87,100 XP): 14 (HQ: 5)
All at once (358,100 XP needed): 57 (HQ: 19)
Straight from 20-30 (984,000 XP): 155 (HQ: 52)
Level 25 leves

Love in the Time of Umbra (Ul'dah) - 9885 XP (HQ: 29655 XP)
Requires: 1 Silver Ring
Completions to level: Level 25-26 (95,200 XP): 10 (HQ: 4)
Level 26-27 (109,800 XP): 12 (HQ: 4)
Level 27-28 (124,800 XP): 13 (HQ: 5)
Level 28-29 (140,200 XP): 15 (HQ: 5)
Level 29-30 (155,900 XP): 16 (HQ: 6)
All at once (625,900 XP needed): 64 (HQ: 22)
Straight from 25-35 (1,575,300 XP): 160 (HQ: 54)

Thaumaturge is Magic (Ul'dah) - 16550 XP (HQ: 49650 XP)
Requires: 1 Fluorite Ring
Completions to level: Level 25-26 (95,200 XP): 6 (HQ: 2)
Level 26-27 (109,800 XP): 7 (HQ: 3)
Level 27-28 (124,800 XP): 8 (HQ: 3)
Level 28-29 (140,200 XP): 9 (HQ: 3)
Level 29-30 (155,900 XP): 10 (HQ: 4)
All at once (625,900 XP needed): 38 (HQ: 13)
Straight from 25-35 (1,575,300 XP): 96 (HQ: 32)

All Booked Up (Ul'dah) - 33345* XP (HQ: 100035* XP)
Requires: 3 Silver Magnifiers (9 total)
Completions to level: Level 25-26 (95,200 XP): 3 (HQ: 1)
Level 26-27 (109,800 XP): 4 (HQ: 2)
Level 27-28 (124,800 XP): 4 (HQ: 2)
Level 28-29 (140,200 XP): 5 (HQ: 2)
Level 29-30 (155,900 XP): 5 (HQ: 2)
All at once (625,900 XP needed): 19 (HQ: 7)
Straight from 25-35 (1,575,300 XP): 48 (HQ: 16)

Necklet of Champions (Quarrymill) - 9885 XP (HQ: 29655 XP)
Requires: 1 Horn Necklace
Completions to level: Level 25-26 (95,200 XP): 10 (HQ: 4)
Level 26-27 (109,800 XP): 12 (HQ: 4)
Level 27-28 (124,800 XP): 13 (HQ: 5)
Level 28-29 (140,200 XP): 15 (HQ: 5)
Level 29-30 (155,900 XP): 16 (HQ: 6)
All at once (625,900 XP needed): 64 (HQ: 22)
Straight from 25-35 (1,575,300 XP): 160 (HQ: 54)

Dancing with the Stars (Quarrymill) - 33345* XP (HQ: 100035* XP)
Requires: 3 Toothed Staghorn Staff (9 total)
Completions to level: Level 25-26 (95,200 XP): 3 (HQ: 1)
Level 26-27 (109,800 XP): 4 (HQ: 2)
Level 27-28 (124,800 XP): 4 (HQ: 2)
Level 28-29 (140,200 XP): 5 (HQ: 2)
Level 29-30 (155,900 XP): 5 (HQ: 2)
All at once (625,900 XP needed): 19 (HQ: 7)
Straight from 25-35 (1,575,300 XP): 48 (HQ: 16)
Level 30 leves

A Little Bird Told Me (Ul'dah) - 53010* XP (HQ: 159030* XP)
Requires: 3 Malachite Bracelet (9 total)
Completions to level: Level 30-31 (162,500 XP): 4 (HQ: 2)
Level 31-32 (175,900 XP): 4 (HQ: 2)
Level 32-33 (189,600 XP): 4 (HQ: 2)
Level 33-34 (203,500 XP): 4 (HQ: 2)
Level 34-35 (217,900 XP): 5 (HQ: 2)
All at once (949,400 XP needed): 18 (HQ: 6)
Straight from 30-40 (2,290,520 XP): 44 (HQ: 15)

One Man's Trash (Ul'dah) - 15141 XP (HQ: 45423 XP)
Requires: 1 Horn Ring
Completions to level: Level 30-31 (162,500 XP): 11 (HQ: 4)
Level 31-32 (175,900 XP): 12 (HQ: 4)
Level 32-33 (189,600 XP): 13 (HQ: 5)
Level 33-34 (203,500 XP): 14 (HQ: 5)
Level 34-35 (217,900 XP): 15 (HQ: 5)
All at once (949,400 XP needed): 63 (HQ: 21)
Straight from 30-40 (2,290,520 XP): 152 (HQ: 51)

He Has His Quartz (Ul'dah) - 23912 XP (HQ: 71736 XP)
Requires: 1 Silver Circlet (Goshenite)
Completions to level: Level 30-31 (162,500 XP): 7 (HQ: 3)
Level 31-32 (175,900 XP): 8 (HQ: 3)
Level 32-33 (189,600 XP): 8 (HQ: 3)
Level 33-34 (203,500 XP): 9 (HQ: 3)
Level 34-35 (217,900 XP): 10 (HQ: 4)
All at once (949,400 XP needed): 40 (HQ: 14)
Straight from 30-40 (2,290,520 XP): 96 (HQ: 32)

It's Only Love (Costa del Sol) - 15141 XP (HQ: 45423 XP)
Requires: 1 Silver Choker
Completions to level: Level 30-31 (162,500 XP): 11 (HQ: 4)
Level 31-32 (175,900 XP): 12 (HQ: 4)
Level 32-33 (189,600 XP): 13 (HQ: 5)
Level 33-34 (203,500 XP): 14 (HQ: 5)
Level 34-35 (217,900 XP): 15 (HQ: 5)
All at once (949,400 XP needed): 63 (HQ: 21)
Straight from 30-40 (2,290,520 XP): 152 (HQ: 51)

Get the Green Stuff (Costa del Sol) - 53010* XP (HQ: 159030* XP)
Requires: 3 Malachite Earrings (9 total)
Completions to level: Level 30-31 (162,500 XP): 4 (HQ: 2)
Level 31-32 (175,900 XP): 4 (HQ: 2)
Level 32-33 (189,600 XP): 4 (HQ: 2)
Level 33-34 (203,500 XP): 4 (HQ: 2)
Level 34-35 (217,900 XP): 5 (HQ: 2)
All at once (949,400 XP needed): 18 (HQ: 6)
Straight from 30-40 (2,290,520 XP): 44 (HQ: 15)
Level 35 leves

Lode It Up (Ul'dah) - 20517 XP (HQ: 61551 XP)
Requires: 1 Mythril Ring
Completions to level: Level 35-36 (232,320 XP): 12 (HQ: 4)
Level 36-37 (249,900 XP): 13 (HQ: 5)
Level 37-38 (267,800 XP): 14 (HQ: 5)
Level 38-39 (286,200 XP): 14 (HQ: 5)
Level 39-40 (304,900 XP): 15 (HQ: 5)
All at once (1,341,120 XP needed): 66 (HQ: 22)
Straight from 35-45 (3,126,620): 153 (HQ: 51)

Actually, It's Loyalty (Ul'dah) - 32396 XP (HQ: 97188 XP)
Requires: 1 Aquamarine Bracelet
Completions to level: Level 35-36 (232,320 XP): 8 (HQ: 3)
Level 36-37 (249,900 XP): 8 (HQ: 3)
Level 37-38 (267,800 XP): 9 (HQ: 3)
Level 38-39 (286,200 XP): 9 (HQ: 3)
Level 39-40 (304,900 XP): 10 (HQ: 4)
All at once (1,341,120 XP needed): 42 (HQ: 14)
Straight from 35-45 (3,126,620): 97 (HQ: 33)

Burning the Midnight Oil (Ul'dah) - 71820* XP (HQ: 215460* XP)
Requires: 3 Fire Brand (9 total)
Completions to level: Level 35-36 (232,320 XP): 4 (HQ: 2)
Level 36-37 (249,900 XP): 4 (HQ: 2)
Level 37-38 (267,800 XP): 4 (HQ: 2)
Level 38-39 (286,200 XP): 4 (HQ: 2)
Level 39-40 (304,900 XP): 5 (HQ: 2)
All at once (1,341,120 XP needed): 19 (HQ: 7)
Straight from 35-45 (3,126,620): 44 (HQ: 15)

Dead Can't Defang (Observatorium) - 20517 XP (HQ: 61551 XP)
Requires: 1 Wolf Necklace
Completions to level: Level 35-36 (232,320 XP): 12 (HQ: 4)
Level 36-37 (249,900 XP): 13 (HQ: 5)
Level 37-38 (267,800 XP): 14 (HQ: 5)
Level 38-39 (286,200 XP): 14 (HQ: 5)
Level 39-40 (304,900 XP): 15 (HQ: 5)
All at once (1,341,120 XP needed): 66 (HQ: 22)
Straight from 35-45 (3,126,620): 153 (HQ: 51)

Faith and Fashion (Observatorium) - 71820* XP (HQ: 215460* XP)
Requires: 3 Mythril Earrings (9 total)
Completions to level: Level 35-36 (232,320 XP): 4 (HQ: 2)
Level 36-37 (249,900 XP): 4 (HQ: 2)
Level 37-38 (267,800 XP): 4 (HQ: 2)
Level 38-39 (286,200 XP): 4 (HQ: 2)
Level 39-40 (304,900 XP): 5 (HQ: 2)
All at once (1,341,120 XP needed): 19 (HQ: 7)
Straight from 35-45 (3,126,620): 44 (HQ: 15)
Level 40 leves

When We Were Blings (Ul'dah) - 27107 XP (HQ: 81321 XP)
Requires: 1 Mythril Ear Cuffs
Completions to level: Level 40-41 (324,000 XP): 12 (HQ: 4)
Level 41-42 (340,200 XP): 13 (HQ: 5)
Level 42-43 (356,800 XP): 14 (HQ: 5)
Level 43-44 (373,700 XP): 14 (HQ: 5)
Level 44-45 (390,800 XP): 15 (HQ: 5)
All at once (1,785,500 XP needed): 66 (HQ: 22)
Straight from 40-50 (4,125,800): 153 (HQ: 51)

Coral on My Mind (Ul'dah) - 41831 XP (HQ: 125493 XP)
Requires: 1 Red Coral Ring
Completions to level: Level 40-41 (324,000 XP): 8 (HQ: 3)
Level 41-42 (340,200 XP): 9 (HQ: 3)
Level 42-43 (356,800 XP): 9 (HQ: 3)
Level 43-44 (373,700 XP): 9 (HQ: 3)
Level 44-45 (390,800 XP): 10 (HQ: 4)
All at once (1,785,500 XP needed): 43 (HQ: 15)
Straight from 40-50 (4,125,800): 99 (HQ: 33)

It's My Business to Know Things (Ul'dah) - 96147* XP (HQ: 288441* XP)
Requires: 3 Red Coral Armillae (9 total)
Completions to level: Level 40-41 (324,000 XP): 4 (HQ: 2)
Level 41-42 (340,200 XP): 4 (HQ: 2)
Level 42-43 (356,800 XP): 4 (HQ: 2)
Level 43-44 (373,700 XP): 4 (HQ: 2)
Level 44-45 (390,800 XP): 5 (HQ: 2)
All at once (1,785,500 XP needed): 19 (HQ: 7)
Straight from 40-50 (4,125,800): 43 (HQ: 15)

If You've Got It, Flaunt It (Whitebrim) - 96147* XP (HQ: 288441* XP)
Requires: 3 Peridot Earrings (9 total)
Completions to level: Level 40-41 (324,000 XP): 4 (HQ: 2)
Level 41-42 (340,200 XP): 4 (HQ: 2)
Level 42-43 (356,800 XP): 4 (HQ: 2)
Level 43-44 (373,700 XP): 4 (HQ: 2)
Level 44-45 (390,800 XP): 5 (HQ: 2)
All at once (1,785,500 XP needed): 19 (HQ: 7)
Straight from 40-50 (4,125,800): 43 (HQ: 15)

Tough Job Market (Whitebrim) - 27107 XP (HQ: 81321 XP)
Requires: 1 Horn Staff
Completions to level: Level 40-41 (324,000 XP): 12 (HQ: 4)
Level 41-42 (340,200 XP): 13 (HQ: 5)
Level 42-43 (356,800 XP): 14 (HQ: 5)
Level 43-44 (373,700 XP): 14 (HQ: 5)
Level 44-45 (390,800 XP): 15 (HQ: 5)
All at once (1,785,500 XP needed): 66 (HQ: 22)
Straight from 40-50 (4,125,800): 153 (HQ: 51)
Level 45 leves

Green and Bear It (Ul'dah) - 53280 XP (HQ: 159840 XP)
Requires: 1 Tourmaline Choker
Completions to level: Level 45-46 (408,200 XP): 8 (HQ: 3)
Level 46-47 (437,600 XP): 9 (HQ: 3)
Level 47-48 (467,500 XP): 9 (HQ: 3)
Level 48-49 (498,000 XP): 10 (HQ: 4)
Level 49-50 (529,000 XP): 10 (HQ: 4)
All at once (2,340,300 XP needed): 44 (HQ: 15)

The Big Red (Ul'dah) - 117261* XP (HQ: 351783* XP)
Requires: 3 Red Coral Necklace (9 total)
Completions to level: Level 45-46 (408,200 XP): 4 (HQ: 2)
Level 46-47 (437,600 XP): 4 (HQ: 2)
Level 47-48 (467,500 XP): 5 (HQ: 2)
Level 48-49 (498,000 XP): 5 (HQ: 2)
Level 49-50 (529,000 XP): 5 (HQ: 2)
All at once (2,340,300 XP needed): 20 (HQ: 7)

Gold Is So Last Year (Ul'dah) - 33573 XP (HQ: 100719 XP)
Requires: 1 Electrum Circlet (Amber)
Completions to level: Level 45-46 (408,200 XP): 13 (HQ: 5)
Level 46-47 (437,600 XP): 14 (HQ: 5)
Level 47-48 (467,500 XP): 14 (HQ: 5)
Level 48-49 (498,000 XP): 15 (HQ: 5)
Level 49-50 (529,000 XP): 16 (HQ: 6)
All at once (2,340,300 XP needed): 70 (HQ: 24)

Sweet Charity (St. Coinach's Find) - 34552 XP (HQ: 103656 XP)
Requires: 1 Amber Ring
Completions to level: Level 45-46 (408,200 XP): 12 (HQ: 4)
Level 46-47 (437,600 XP): 13 (HQ: 5)
Level 47-48 (467,500 XP): 14 (HQ: 5)
Level 48-49 (498,000 XP): 15 (HQ: 5)
Level 49-50 (529,000 XP): 16 (HQ: 6)
All at once (2,340,300 XP needed): 68 (HQ: 23)

Light in the Darkness (St. Coinach's Find) - 117261* XP (HQ: 351783* XP)
Requires: 3 Amber Choker (9 total)
Completions to level: Level 45-46 (408,200 XP): 4 (HQ: 2)
Level 46-47 (437,600 XP): 4 (HQ: 2)
Level 47-48 (467,500 XP): 5 (HQ: 2)
Level 48-49 (498,000 XP): 5 (HQ: 2)
Level 49-50 (529,000 XP): 5 (HQ: 2)
All at once (2,340,300 XP needed): 20 (HQ: 7)

The listed experience amounts are the bare minimum. Multiple high quality turn-ins will result in much more XP.

(If you see any errors here, please let me know!)
Level 20

Ul'dah - King for a Day (7331 XP)
Requires: 3 Decorated Copper Scepter
Decorated Copper Scepter components:
2 Wind Shard
1 Fire Shard
1 Brass Ingot
1 Ragstone Whetstone
1 Marbled Eye

Quarrymill - Dog Tags Are for Dogs (7331 XP)
Requires: 3 Brass Ring
Brass Ring components:
2 Wind Shard
1 Fire Shard
1 Brass Ingot
1 Ragstone Whetstone
Level 25

Ul'dah - All Booked Up (11115 XP)
Requires: 3 Silver Magnifiers
Silver Magnifiers components:
3 Wind Shard
2 Fire Shard
2 Silver Ingot
2 Clear Glass Lens

Quarrymill - Dancing with the Stars (11115 XP)
Requires: 3 Toothed Staghorn Staff
Toothed Staghorn staff components:
3 Wind Shard
2 Fire Shard
2 Antelope Horn
1 Marbled Eye
1 Scalekin Blood
Level 30

Ul'dah - A Little Bird Told Me (17670 XP)
Requires: 3 Malachite Bracelets
Malachite Bracelets components:
3 Wind Shard
3 Fire Shard
1 Silver Ingot
2 Malachite

Costa del Sol - Get the Green Stuff (17670 XP)
Requires: 3 Malachite Earrings
Malachite Earrings components
3 Wind Shard
3 Fire Shard
1 Silver Ingot
2 Malachite
Level 35

Ul'dah - Burning the Midnight Oil (23940 XP)
Requires: 3 Fire Brand
Fire Brand components:
5 Wind Shard
3 Fire Shard
1 Silver Ingot
1 Aldgoat Horn
1 Eye of Fire

Coerthas (Observatorium) - Faith and Fashion (23940 XP)
Requires: 3 Mythril Earrings
Mythril Earrings components:
4 Wind Shard
3 Fire Shard
1 Mythril Ingot
1 Siltstone Whetstone
Level 40

Ul'dah - It's My Business to Know Things (32049 XP)
Requires: 3 Red Coral Armillae
Red Coral Armillae components:
5 Wind Shard
4 Fire Shard
3 Red Coral

Coerthas - If You've Got It, Flaunt It (32049 XP)
Requires: 3 Peridot Earrings
Peridot Earrings components:
5 Wind Shard
4 Fire Shard
1 Mythril Ingot
2 Peridot
Level 45

Ul'dah - The Big Red (39087 XP)
Requires: 3 Red Coral Necklace
Amber Choker components:
6 Wind Shard
5 Fire Shard
1 Electrum Ingot
1 Amber

Mor Dhona - Light in the Darkness (39087 XP)
Requires: 3 Amber Choker
Amber Choker components:
6 Wind Shard
5 Fire Shard
1 Electrum Ingot
1 Amber