Magic Crystal

Biodata

Appearance & Properties

• Physical appearance: The crystals Kroya uses for his first magic field are crystal-clear. After modification, they extend rootlike structures that shine with crystalline blue light, even in sunlight 4 5.
• Elemental variation: Water-attribute crystals are clear, sparkling blue, distinct from ordinary non-elemental crystals 37.
• Stored power: Their mana can be extracted, released into water, or absorbed by a spell scroll 6 10 17.
• Preservation: Properly stored mana crystals do not decay, although they can lose their mana and become dull 9.
• Stability: Kroya distinguishes Water Luminary Crystals from ordinary magic crystals because the former contain unusually volatile water mana 14.

Grades & Exchange Value

Uses

Research, Meditation & Mana Recovery

• Magic crystals are essential supplies for a mage’s research and daily meditation 1.
• Magic Drain is commonly used to draw power from crystals and rapidly replenish a mage’s mana 17.
• Their scarcity matters especially in remote territories: Rob warns that Reef Island is unlikely to provide enough tax revenue to replace Kroya’s reserves, while remote regions produce practically no crystals 2.

Magic Field Method

• Kroya draws intricate, plant-root-like patterns on three crystals using a crystal pen dipped in mana solution 4.
• The modified crystals sprout mana roots, which spread through the ground and supply magical plants with the power needed to grow in mana-poor soil 5.
• Their released mana gradually transforms the soil. This is only the first stage; later treatments can alter the field’s elemental composition with substances such as flame or frost potions 5.
• Kroya uses the resulting field to cultivate his inscribed sunflowers and later checks the crystals powering it 5 11.

Magic Power Baths

• A crystal dissolves in the prepared bath, releasing its power into the water and producing a faint magical mist 10.
• A secret Mage Association spell lets trained knights use that power to open their meridians and strengthen their bodies 10.
• The treatment requires both the Association’s knight-training manuals and a mage’s active guidance. Kroya’s bath for Rob and four knights leaves him exhausted after half an hour 10.

Spell Activation & Magical Objects

• Mansion Spell scroll: Absorbs a crystal’s energy before transforming Kroya’s room into a furnished, decorated space 6.
• Sacred Spring outlet: Kroya’s first summoning uses two crystals. One dissolves to form the outlet; the remaining crystal is consumed as an additional transaction fee 15.
• Guild membership card: Appears to be made from magic crystal and allows Kroya to summon a Sacred Spring outlet through mana and an incantation 15 26.

Trade & Purchasing Power

Magic crystals serve as a pricing and payment standard for magical materials, knowledge, plants, and services 15 16 26 45.

Guild Compensation

• The Sacred Spring Trade Guild discovers that Kroya’s flawless waterlight essence was mistaken for a form worth one-tenth as much 47.
• It offers thirty-seven grade-two crystals, equivalent to 3,700 grade-one crystals, and a Magic Spring Jellyfish as compensation 47.
• Kroya prioritizes magic-field development and plant seeds over a tower spirit, choosing investments that can generate continuing income 47 48.

Alternative Mana Sources

• Inscribed sunflowers: Gather sunlight and store Sunflame Power in their seeds. Kroya compares a mature crop to a field of fire-attribute magic crystals and anticipates a renewable energy supply 2.
• Magic Spring Pearl: Enriches spring water with mana and can recharge inside its Sea Moon Clam shell. Kroya uses the enriched water for baths and growth potions, although his bath still consumes a magic crystal 10.
• Coral Mana Pools: Kroya builds three pools storing pure, water, and fire magic, with a combined capacity equivalent to roughly five hundred level-one magic crystals 45.