House of Diamonds

House of Diamonds is a family-owned custom jewelry studio in Overland Park, Kansas, founded by Gene Cullinane in 1995 and run with his wife Karen Cullinane. They design engagement rings and fine jewelry, and perform all custom work, repairs, and refurbishment 100% on-site by trained craftspeople — a true in-house maker rather than a pure-retail counter. Now in its fourth decade, it bills itself as one of the most complete jewelry studios in the Midwest.

Description

House of Diamonds is a custom jewelry studio specializing in engagement rings, wedding bands, and fine jewelry, alongside diamond sales, jewelry repair, refurbishment, and appraisal. The defining feature is craft: the business states that 100% of all custom work and jewelry repairs are completed on-site by trained craftspeople, and that a customer’s jewelry never leaves the premises until it is finished — repairs are frequently done while you wait or within a few days.¹² The studio markets a pre-selection process in which it stocks only the top tier within each diamond grade, and offers a lifetime warranty on its work.¹

This in-house maker profile — original design and hand fabrication, not just resale of vendor inventory — is why the business qualifies as a maker/craft entry rather than pure retail.¹

Ownership and history

House of Diamonds was founded by Gene Cullinane in 1995 and is co-owned and operated with his wife Karen Cullinane; the two are publicly identified as the owners on the company’s own materials and in reviews.¹³ The corporate entity is registered as House of Diamonds, Inc.⁴ Gene Cullinane’s professional profile lists him in connection with House of Diamonds, Inc.⁵

Over more than 30 years the studio has grown from a startup into what it describes as “one of the most complete and talented jewelry studios in the Midwest,” serving clients from across the Kansas City metro and beyond.¹ The business has operated continuously at its College Boulevard location in southern Overland Park (Johnson County), placing it squarely within the KC metro as a born-and-operated local jeweler.¹²

Note: a same-named “House of Diamonds” exists in other markets nationally; this page concerns specifically the Overland Park, KS jeweler at 11805 College Blvd owned by the Cullinane family. Identity confirmed by matching the official site (mybigrock.com), Yelp, BBB, and the registered corporate name across the same address and phone.¹²⁴

Links

• Official site: https://www.mybigrock.com/
• Yelp: https://www.yelp.com/biz/house-of-diamonds-overland-park
• BBB: https://www.bbb.org/us/ks/overland-park/profile/jewelry-stores/house-of-diamonds-inc-0714-96010056

Sources

Disputes

None at this time.

Footnotes

1. https://www.mybigrock.com/about/ — official “About” page. asserts: founded by Gene Cullinane in 1995; owners Gene and Karen Cullinane; 100% of custom work and repairs done on-site by trained craftspeople; pre-selects top diamonds per grade; lifetime warranty; “one of the most complete and talented jewelry studios in the Midwest,” serving the metro and across the USA; “more than 30 years.” ↩ ↩² ↩³ ↩⁴ ↩⁵ ↩⁶ ↩⁷

2. https://www.yelp.com/biz/house-of-diamonds-overland-park — Yelp business listing, updated March 2026. asserts: address 11805 College Blvd, Overland Park, KS; jewelry category; phone; reviews; active. ↩ ↩² ↩³

3. https://www.mybigrock.com/ — official homepage. asserts: “local, family-owned custom jewelry store”; owners Gene and Karen; hours Tue–Fri 10–6, Sat 10–5; phone (913) 469-0111. ↩

4. https://www.bbb.org/us/ks/overland-park/profile/jewelry-stores/house-of-diamonds-inc-0714-96010056 — BBB business profile. asserts: registered entity “House of Diamonds, Inc.”; Overland Park location; jewelry store. ↩ ↩²

5. https://www.linkedin.com/in/genecullinane/ — LinkedIn profile. asserts: Gene Cullinane associated with House of Diamonds, Inc. ↩