Jewels

Company type	Private
Industry	Mixed martial arts promotion
Predecessor	Smackgirl
Founded	October 2008 (2008-10)
Headquarters	Shibuya, Tokyo,Japan
Area served	Japan
Key people	Yuichi Ozono (president) Shigeru Saeki (supervisor)
Parent	Marverous Japan Co., Ltd.
Website	w-jewels.jp

Jewels (styledJEWELS in capitals) is a mixed martial arts organization owned by Marverous Japan Co., Ltd., focused onfemale fighters. It is the direct successor ofSmackgirl.^[1][2][3] It has a working relationship with fellow mixed martial arts promotionDeep presided byShigeru Saeki (also the Jewels supervisor).^[4]

After the women MMA promotion Smackgirl faced severe financial difficulties caused by the unexpected departure of major sponsors and television network deals, an executive from Japanese event production company Archery Inc., Yuichi Ozono, formed the company Marverous Japan and acquired the assets and rights formerly belonging to Smackgirl parent company Kilgore.^[3] Since the reputation of Smackgirl was tarnished by all the problems it faced, it was decided to start anew.^[3]

On June 9, 2012, it was announced that Jewels has formed a strategic partnership with American promotionInvicta Fighting Championships to cross-promote the world's top female fighters on their respective fight cards in the United States and Japan.^[5]

On May 25, 2013 (2013-05-25) Jewels announced that it would cease operations as an independent company, with Yuichi Ozono, then head of Jewels, stepping down and Shigeru Saeki fromDeep, formerly supervisor, taking the full direction, and transferring fighters and brand to the newDeep Jewels brand, which would be managed byDeep.^[6][7]

Class	Champion	Since	Defences	-
Featherweight 65.8 kg (145.1 lb)	Yoko Higashi	May 8, 2022 (2022-05-08)	0
Bantamweight 61.2 kg (134.9 lb)	Vacant
Flyweight 56.7 kg (125.0 lb)	Rin Nakai	May 8, 2022 (2022-05-08)	0
Strawweight 52.2 kg (115.1 lb)	Machi Fukuda	September 7, 2025 (2025-09-07)	0
Atomweight 47.6 kg (104.9 lb)	Seika Izawa	March 24, 2024 (2024-03-24)	0
Microweight 44 kg (97.0 lb)	Saori Oshima	May 26, 2024 (2024-05-26)	0

No.	Name	Event	Date	Defenses
1	Yoko Higashi def.Reina Miura	Deep Jewels 37 Tokyo, Japan	May 8, 2022

Formerly known as middleweight until May 2015.

No.	Name	Event	Date	Defenses
1	Takayo Hashi def.Shizuka Sugiyama	Deep Jewels 4 Tokyo, Japan	May 18, 2014
2	Ji Yeon Kim	Deep Jewels 9 Tokyo, Japan	August 22, 2015
Kim vacated the title when she signed with theUFC.

No.	Name	Event	Date	Defenses
1	Rin Nakai def.Shizuka Sugiyama	Deep Jewels 37 Tokyo, Japan	May 8, 2022

Formerly known as lightweight until May 2015.

No.	Name	Event	Date	Defenses
1	Ayaka Hamasaki def.Seo Hee Ham	Jewels 11th Ring Tokyo, Japan	December 17, 2010	1. def.Seo Hee Ham atJewels 17th Ring on December 17, 2011 inTokyo, Japan 2. def.Yuka Tsuji atJewels 19th Ring on May 26, 2012 inOsaka, Japan 3. def.Emi Fujino atJewels 22nd Ring on December 15, 2012 inOsaka, Japan
Ayaka Hamasaki vacated the title on August 31, 2013.
2	Emi Tomimatsu def.Mizuki Inoue	Deep Jewels 3 Tokyo, Japan	February 16, 2014
3	Mizuki Inoue	Deep Jewels 5 Tokyo, Japan	August 9, 2014	1. def.Emi Fujino atDeep Jewels 9 on August 29, 2015 inTokyo, Japan
-	Miki Motono def. Asami Naki for interim title	Deep Jewels 29 Tokyo, Japan	July 23, 2020
-	Seika Izawa def. interim championMiki Motono	Deep Jewels 33 Tokyo, Japan	June 19, 2021
Inoue vacated the title on March 15, 2022. Izawa was promoted to full champion status.[8]
4	Seika Izawa promoted to undisputed champion	—	March 15, 2022
-	Arisa Matsuda def. Machi Fukuda for interim title	Deep Jewels 43 Tokyo, Japan	November 23, 2023
-	Si Woo Park def. Machi Fukuda for interim title	Deep Jewels 45 Tokyo, Japan	May 26, 2024
Izawa vacated the title on July 11, 2025. Park was promoted to full champion status[9]
5	Si Woo Park promoted to undisputed champion	—	July 11, 2025
6	Machi Fukuda	Deep Jewels 50 Tokyo, Japan	September 7, 2025

Formerly known as featherweight until May 2015.

No.	Name	Event	Date	Defenses
1	Naho Sugiyama def. Misaki Takimoto	Jewels 17th Ring Tokyo, Japan	December 17, 2011
2	Ham Seo-hee	Jewels 24th Ring Tokyo, Japan	May 25, 2013	1. def. Sadae Numata atDeep Jewels 2 on November 4, 2013 inTokyo, Japan 2. def.Saori Ishioka atDeep Jewels 6 on November 3, 2014 inTokyo, Japan
Seo Hee Ham vacated the title on December 11, 2014.
3	Mei Yamaguchi def. Satomi Takano	Deep Jewels 8 Tokyo, Japan	May 31, 2015
Mei Yamaguchi vacated the title on April 19, 2016.
4	Naho Sugiyama (2) def. Emi Tomimatsu	Deep Jewels 12 Tokyo, Japan	June 5, 2016
5	Mina Kurobe	Deep Jewels 15 Tokyo, Japan	February 25, 2017	1. def.Satomi Takano atDeep Jewels 19 on March 10, 2018 inTokyo, Japan
6	Tomo Maesawa	Deep Jewels 22 Tokyo, Japan	December 1, 2018	1. def. Emi Tomimatsu atDeep Jewels 26 on October 21, 2019 inTokyo, Japan 2. def. Hikaru Aono at Deep Jewels 30 on October 31, 2020 inTokyo, Japan
Maesawa retired following her second title defense.[10]
7	Saori Oshima def. Hikaru Aono	Deep Jewels 33 Tokyo, Japan	June 20, 2021	1. def.Moeri Suda atDeep Jewels 37 on May 8, 2022 inTokyo, Japan
8	Park Si-yoon	Deep 115 Impact: Deep Vs. Black Combat 2 Tokyo, Japan	September 18, 2023
9	Seika Izawa	Deep Jewels 44 Tokyo, Japan	March 24, 2024

A four woman tournament was scheduled prior to Deep Jewels 28 to crown the promotions first Microweight Champion with the challengers being Emi Sato, Mizuki Furuse,Suwanan Boonsorn andYasuko Tamada with Moe Sasaki as reserve. Furuse and Boonsorn advanced to the final which was scheduled to take place at Deep Jewels 29 before theCOVID-19 pandemic, however this event and the match couldn't be rescheduled when the promotion returned with the show. On November 5, it was announced that Furuse would be taking an extended absence as she was both pregnant and getting married. As a result of these developments, Jewels declared Boonsorn as the inaugural champion.

No.	Name	Event	Date	Defenses
1	Suwanan Boonsorn	-	November 5, 2020
2	Aya Murakami	Deep Jewels 42 Tokyo, Japan	September 10, 2023
3	Saori Oshima	Deep Jewels 45 Tokyo, Japan	May 26, 2024

Tournament	Winner
Rough Stone Grand Prix 2009 -60 kilograms (132 lb)	Alexandra Sanchez
Rough Stone Grand Prix 2009 -54 kilograms (119 lb)	Mika Nagano
Rough Stone Grand Prix 2009 -48 kilograms (106 lb)	Asami Kodera
Rough Stone Grand Prix 2010 -56 kilograms (123 lb)	Mizuki Inoue
Rough Stone Grand Prix 2010 -52 kilograms (115 lb)	Hiroko Kitamura
Rough Stone Grand Prix 2010 -48 kilograms (106 lb)	Kikuyo Ishikawa
First lightweight queen decision tournament	Ayaka Hamasaki
First featherweight queen decision tournament	Naho Sugiyama
Jewels/Deep Kickboxing Tournament 2012 -47 kilograms (104 lb)	Momoka
Deep - Jewels Lightweight Grand Prix 2013 -52 kilograms (115 lb)	Emi Tomimatsu
Deep - Jewels Featherweight Grand Prix 2015 -48 kilograms (106 lb)	Mei Yamaguchi
Deep - Jewels Atomweight Grand Prix 2021 -48 kilograms (106 lb)	Saori Oshima

• List of Deep champions
• List of Deep events
• Deep Jewels events

• Official website(in Japanese)
• JEWELS event results on Sherdog
• DEEP JEWELS event results on Tapology

• 2008 establishments in Japan
• Mixed martial arts promotions
• Sports organizations established in 2008
• Mixed martial arts events lists
• Women's mixed martial arts

• All articles with dead external links
• Articles with dead external links from February 2020
• Articles with permanently dead external links
• CS1 Japanese-language sources (ja)
• Articles with short description
• Short description matches Wikidata
• Articles with Japanese-language sources (ja)