Ultra Rare

Gem-Knight Crystal Battles of Legend: Monster Mayhem #BLMM-EN100

Card #BLMM-EN100

Market value · ungraded

$0.19

▲ 58.3% · 30d

PSA 10

$31

163× raw

Blended from live market data · graded from real sold data
Confidence medium · How we price →

Buy from here

TCGplayerUS ebay CardmarketEU

Gem-Knight Crystal is a Ultra Rare Yu-Gi-Oh! card from Battles of Legend: Monster Mayhem (#BLMM-EN100). Its current blended market value is $0.19 ungraded, with a PSA 10 worth around $31. Prices update from real market data.

Graded prices

Ungraded (raw)$0.19

PSA graded price estimates by grade
Grade	Relative value	Price
PSA 10		$31$31–$31
PSA 9		$6$6–$6

“Sold” = median of real recent sold listings at that grade (eBay or Fanatics Collect — hover a badge to see which). Other figures are blended marketplace estimates. Confidence reflects source backing and price spread — not PSA-official values.

Available to buy nowLive on eBay

Card details

Set: Battles of Legend: Monster Mayhem
Number: #BLMM-EN100
Rarity: Ultra Rare
Game: Yu-Gi-Oh!

More from Battles of Legend: Monster Mayhem

Blue-Eyes White Dragon (Starlight Rare)

#BLMM-EN001 · Starlight Rare

$150.43

Necroquip Princess (Starlight Rare)

#BLMM-EN146 · Starlight Rare

$76.91

Galatea-i, the Orcust Automaton (Starlight Rare)

#BLMM-EN052 · Starlight Rare

$73.50

Battles of Legend: Monster Mayhem Booster Box [1st Edition]

#N/A

$57.51

Lady's Dragonmaid (Starlight Rare)

#BLMM-EN049 · Starlight Rare

$56.50

Enlilgirsu, the Orcust Mekk-Knight (Starlight Rare)

#BLMM-EN053 · Starlight Rare

$50.08

Herald of Orange Light (Starlight Rare)

#BLMM-EN103 · Starlight Rare

$46.80

Skull Servant (Starlight Rare)

#BLMM-EN002 · Starlight Rare

$38.64

All Battles of Legend: Monster Mayhem cards →

Where to buy & check prices

Check recent sold prices

eBay sold

Frequently asked questions

How much is Gem-Knight Crystal worth?

Gem-Knight Crystal (Battles of Legend: Monster Mayhem #BLMM-EN100) is worth around $0.19 ungraded, or about $31 in PSA 10, based on live Yu-Gi-Oh! market data.

What is a PSA 10 Gem-Knight Crystal worth?

A PSA 10 Gem-Knight Crystal sells for around $31, roughly 163× the ungraded price.

Where can I buy Gem-Knight Crystal?

You can buy Gem-Knight Crystal on TCGplayer, Cardmarket and eBay — see the live listings on this page. Always compare against the blended market value first.

What rarity is Gem-Knight Crystal?

Gem-Knight Crystal is a Ultra Rare Yu-Gi-Oh! card from the Battles of Legend: Monster Mayhem set.