KASSOY

What KASSOY does

KASSOY is a U.S.-based specialty distributor of gemological equipment and jewelry tools, headquartered at 101 Commercial Street, Plainview, NY. Founded circa 1935 with origins in New York's Diamond District, the company has operated continuously for nearly 90 years, building a catalog that spans gemological instruments (refractometers, polariscopes, spectroscopes, loupes), microscopes, precision scales (carat and gold), diamond and moissanite testers, CVD/HPHT synthetic-diamond detectors, gold and precious-metal analyzers (including Thermo-Scientific Niton XRF units), jewelry manufacturing tools (casting, laser/pulse-arc welders, rolling mills, polishing), 3D printing (NovaFab printers and proprietary PowerResins), thermal-transfer printers/labels/tags, watch repair tools, lighting, photography equipment, and packaging/display supplies. The portfolio combines two proprietary KASSOY-branded hardware lines (KASSOY Loupes and KASSOY Gemological Microscopes) with authorized distribution of established third-party brands (GIA, Leica, Kruss, Mettler Toledo, A&D, Ohaus, Tanita, Durston, Bergeon, Dino-Lite, Orion, Presidium).

The company serves a fragmented professional base of jewelers, gemologists, diamond graders, jewelry manufacturers, pawnbrokers, watchmakers, and trade guild members, reaching customers primarily through an e-commerce storefront (kassoy.com), phone-based sales support (1-800-452-7769), industry trade shows, email newsletters, and social channels. Pricing is largely quote-based or account-login-gated, with a $500 free-shipping threshold on most online orders and a financing option introduced alongside the "Celebrating 90 Years" campaign. Distribution is U.S.-domestic with signal intent toward the Canadian market via Canadian Jewellers Association membership.

KASSOY operates as a privately held LLC with 11–50 employees, no disclosed institutional ownership or funding rounds, and no parent/subsidiary structure. The business model is straightforward distribution plus a small private-label hardware overlay, monetized via hardware and consumables sales (e.g., PowerResins, thermal ribbons) across more than 20 product categories. Strategic posture is that of a mature, cash-generative specialist rather than a high-growth venture: defensible through 90 years of brand and trade relationships, constrained by single-country reach and reliance on third-party brand authorization.

Name

KASSOY

Legal name

KASSOY LLC

Website

https://kassoy.com

Company type

Private

Founded year

1935

Operating status

Operating

Headcount range

11–50 employees

Short description

KASSOY is a ~90-year-old U.S. specialty distributor selling gemological instruments, jewelry tools, microscopes, scales, diamond/gold testers, and manufacturing equipment to independent jewelers, gemologists, pawnbrokers, and jewelry manufacturers via e-commerce, phone sales, and trade shows.

Ownership category

akta.pro rank

Product category

Gemological Equipment and Jewelry Tools

NAICS

Jewelry, Watch, Precious Stone, and Precious Metal Merchant Wholesalers (423940)

SIC

Wholesale-Jewelry, Watches, Precious Stones & Metals (5094)

akta.pro primary industry

Fine Jewelry Wholesale & Trading (CRAKAAAL)

Keywords

• Gemological equipment
• Jewelry tools
• Diamond testing equipment
• Precious metal analyzers
• Jewelry supplies

Headquarters

HQ city

Plainview

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Supply Chain, Operations, Personnel, Marketing or Sales, Infrastructure

Revenue model

1. Hardware and Equipment Sales: KASSOY generates revenue primarily through the sale of gemological equipment, jewelry tools, microscopes, scales, diamond testers, gold testing equipment, and related supplies. This includes both proprietary KASSOY-branded products and third-party branded equipment from manufacturers like Thermo-Scientific, GIA, Presidium, Kruss, Leica, Mettler Toledo, and others.

Pricing tiers

Go-to-market motion1 record

Distribution channels1 record

Marketing channels5 records

Core offering

KASSOY is a specialized distributor and supplier of gemological equipment, jewelry manufacturing tools, microscopes, precision scales, diamond and gold testing equipment, and related retail supplies for the gemological and jewelry industries. The company sells both proprietary KASSOY-branded products (loupes and gemological microscopes) and established third-party brands (GIA, Leica, Kruss, Thermo-Scientific, Mettler Toledo, Durston, Bergeon) through its e-commerce storefront, phone sales support, and trade show presence.

Product overview

KASSOY is a specialized distributor and supplier of gemological equipment and jewelry tools serving the jewelry and gemstone industries for nearly 90 years. The company operates as an e-commerce platform offering a comprehensive product portfolio organized into distinct categories: Gemological Equipment (diamond grading, gemstone identification, loupes, refractometers, polariscopes, spectroscopes), Microscopes (bench, digital imaging, KASSOY-branded, Kruss, Leica, Dino-Lite), Precision Scales (A&D, Mettler Toledo carat/gold scales, Ohaus, Tanita), Diamond Testing (diamond/moissanite testers, CVD/HPHT synthetic diamond detectors), Gold and Precious Metal Testing (electronic testers, XRF analyzers including Thermo-Scientific Niton), Jewelry Manufacturing Tools (casting, cleaning, engraving, Orion laser/pulse arc welders, Durston rolling mills, polishing), 3D Printing (NovaFab printers and PowerResins), Printers/Labels/Tags, Photography equipment, Watch repair tools (Bergeon), Lighting solutions, and Packaging/Display materials. KASSOY distributes both proprietary KASSOY-branded products and established third-party brands including GIA, Leica, Kruss, Thermo-Scientific, Mettler Toledo, and Durston. The company is recognized as a leading distributor of gold/diamond scales, diamond grading lamps, and thermal transfer tags and printers.

Differentiator

Problem solved

Functional benefit

Products and services

• Gemological Equipment

Quantifiable outcome

• 90 years in business providing tools to the gemological and jewelry industry

Segments2 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature2 records

Partnerships

Eleven partnerships are on record, tiered minor.

• National Pawnbrokers AssociationminorOthersIndustry membership association for pawnbrokers. KASSOY displays the NPA logo indicating membership and presumably serves pawnbrokers as a customer segment requiring jewelry and gem authentication equipment.
• American Gem SocietyminorOthersPrestigious gemological society and trade organization. KASSOY's membership indicates alignment with professional gemological standards and access to AGS member resources.
• International Watch and Jewelry GuildminorOthersTrade guild for watch and jewelry professionals. KASSOY's affiliation demonstrates market presence in the watch and jewelry servicing sector.
• American Gem Trade AssociationminorOthersAGTA is a trade association for the colored gemstone industry. Membership supports KASSOY's positioning as a trusted supplier for gemstone-related equipment.
• Continental Buying GroupminorOthersA buying group for independent jewelers that negotiates vendor partnerships. KASSOY's affiliation indicates distribution reach to CBG member jewelers.
• Diamond Council of AmericaminorOthersOrganization providing diamond education and certification for jewelry professionals. Affiliation reinforces KASSOY's commitment to the diamond industry.
• Natural Color Diamond AssociationminorOthersTrade association for natural color diamond professionals. Membership supports KASSOY's market positioning in the colored diamond segment.
• MJSAminorOthersManufacturing Jewelers & Suppliers of America trade association. Affiliation indicates KASSOY's role as a supplier to jewelry manufacturers.
• Women's Jewelry AssociationminorOthersProfessional association for women in the jewelry industry. Membership supports diversity and networking within the industry.
• National Watch and Clock AssociationminorOthersNAWCC is the association for horology professionals. Affiliation supports KASSOY's watch tools and repair equipment business.
• Canadian Jewellers AssociationminorOthersNational trade association for Canadian jewelry businesses. KASSOY displays CJA membership badge indicating service to Canadian market.

Scale indicators4 records

Recent moves6 records

Expansion highlights4 records

Direct peers

• Rio Grande Jewelry Supply: One of the largest US wholesalers/distributors of jewelry-making supplies, findings, tools, and equipment serving jewelers and manufacturers. Mirrors KASSOY's distribution model, professional B2B focus, and e-commerce storefront strategy in a directly overlapping TAM.
• Otto Frei & Sons: Long-established (founded 1935) US distributor of jewelry tools, watch repair tools, and findings widely used by jewelers, gemologists, and watchmakers. Overlap with KASSOY spans bench tools, loupes, packaging, and watchmaker supplies through direct e-commerce.
• Esslinger & Co. (Contenti): Specialty jewelry supply distributor offering tools, equipment, metals, and findings to jewelers and metalsmiths. Strong overlap with KASSOY's bench tools, polishing, and basic gemological categories via direct e-commerce.
• Halstead Jewelers Supply: Wholesale supplier and platform (Bead & JewelleryMaker) focused on jewelry-making findings, tools, and supplies. Competes with KASSOY on tools, packaging, and findings categories, particularly with hobbyist and prosumer clientele.
• Fire Mountain Gems & Beads: US mail-order/e-commerce jewelry-making and gemstone supplier with deep catalog across tools, findings, and gemological supplies. Adjacent-to-overlapping assortment makes it a credible peer for KASSOY, especially in loupes, scales, and packaging.

Broad incumbents

• Stuller: One of the largest US jewelry manufacturers and wholesale suppliers, offering findings, finished jewelry, equipment, packaging, and digital tools to retail jewelers. Operates a broader B2B platform but competes directly in KASSOY's tools/equipment and packaging categories.

Others

• Gemological Institute of America (GIA): Educational and certification body whose branded instruments (refractometers, microscopes, fluorescence blocks) KASSOY distributes as a partner. Ecosystem participant whose standards drive demand for the equipment KASSOY sells; comparable as a strategic supplier rather than direct competitor.
• Mettler-Toledo (Industrial Division): Manufacturer whose jewelry-grade carat and gold scales (JE/JET/JLGE/JP series) KASSOY distributes and re-brands. Indirect peer via shared end customers and overlapping scale-equipment category, though Mettler-Toledo is also one of KASSOY's principal suppliers.

Emerging players

• Presidium Instruments: Singapore-based manufacturer of gem and diamond testing instruments (diamond/moissanite testers, hardiness gauges, spectrometers). Direct overlap with KASSOY's diamond-testing category, accessible to KASSOY buyers through competing distribution channels.

Regional players

• GRS / Bergeon / Horotec (Swiss watch tools): European-based specialty watchmaker and jeweler toolmakers (Bergeon, Horotec, GRS) whose products KASSOY distributes into the US. Comparable as peer in the watch repair and precision-tooling category, while operating from non-US geographies.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights6 records

Customer concentration

• YouTubeyoutube.com/user/KASSOYLLC
• Instagraminstagram.com/kassoyllc
• Xx.com/kassoy
• Facebookfacebook.com/kassoy1936
• LinkedInlinkedin.com/company/kassoy-llc

Revenue estimate

Valuation estimate

Number of profiles

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about KASSOY