2003
Founding of Core Jewels
MERCURY COLLECTION
Announcement of first collection "MERCURY" with black diamond as the main stone
CJ BLACK
Special processing mixed with platinum type ruthenium
Invented "CJ BLACK"
2004
MOBIUS COLLECTION
Introducing "MOBIUS", a collection that combines ∞ = creative loop and X = unknown possibilities.
2005
ALECT COLLECTION
A collection of diamond beads made by making through holes in diamonds.
Announcing "ALECT"
ADAMAS COLLECTION
Announcing the collection "ADAMAS" that combines the shapes of diamonds and hearts.
COLLABORATION
Announcement of diamond jewelry co-produced with Tim Burton's ``The Nightmare Before Christmas''
MAIA COLLECTION
A new era of solitaire with a modern interpretation
Invented "MAIA setting"
2006
VOALCAN COLLECTION
Announcing the collection "VOALCAN", which uses special manufacturing methods on materials.
FRAGMENT DESIGN
Introducing a diamond silk bracelet in collaboration with fragment Design
FRAGMENT DESIGN
Introducing key hooks in collaboration with SOPHNET. & fragment Design
MASTERMIND JAPAN
Introducing a diamond skull ring in collaboration with mastermind JAPAN
2007
SELENA COLLECTION
Announcing the collection "SELENA" that explores new possibilities for pave settings.
CRIOUS ENGAGEMENT
Announcing an engagement ring from the Kleios collection inspired by honed light.
2008
AMALTHAEA COLLECTION
Announcing the collection "AMALTHAEA" with a modern interpretation inspired by Japanese family crests.
2009
NUMERAL COLLECTION
A collection of Arabic numerals
"NUMERAL" announced
UNDERCOVER
Introducing pyramid stud diamond leather bracelet in collaboration with UNDERCOVER