Harry Kotlar

What Harry Kotlar does

Harry Kotlar & Co. is a privately held, family-owned luxury diamond jewelry design house founded in 1948 in Los Angeles by Harry Kotlar, an emigrant from Germany/Poland who built the business on small diamonds sourced via Helen's brother Aria from Israel. The company is now in its third generation under David Weiner, Harry's grandson, who joined in 1987 and transitioned the firm from a loose-stone supplier into a producer of mounted fine jewelry starting in 1990. Headcount is 51-100 employees and the firm operates from a single Los Angeles operations base, with no external venture or private equity capital disclosed.

The company's commercial core is handmade diamond jewelry — rings, bands, bracelets, earrings, necklaces, and pendants — produced by Italian master artisans using old-world techniques with no computers or digital methods; four artisans touch each piece (forger, carver/setter, polisher, quality-control expert). Its defensible intellectual property consists of the trademarked Kotlar Cushion® (a 61-facet proprietary cushion cut, AGS-certified and laser-inscribed), the Artisan Pavé hallmark (hand-carved platinum or 18k gold with pavé melee in motifs including Bloom, Chevron, Scallop, Criss Cross, French Cut, Leaf, and Lily), the Plasmare Collection (hand-forged platinum-wire gallery technique), and the Kotlar 1948 line targeting younger collectors. All Kotlar Cushion stones greater than 0.70 ct are accompanied by American Gem Society Laboratory certificates numerically mapped to the GIA scale, and diamond rough is sourced from Botswana, Namibia, and South Africa with cutting/polishing in Antwerp and Israel.

The revenue model is one-time direct and channel sales of high-ticket pieces with quote-based, non-public pricing; items under $185,000 ship via FedEx Overnight (US) or FedEx International Priority (ex-US), while items above $185,000 are fulfilled via a concierge service. The lifetime trade-up program (original price applied to a new piece at least 50% more valuable) and Passport registration create an embedded upgrade and warranty loop. Distribution combines a network of 25+ authorized fine-jewelry retailers across 12+ US states (BC Clark Jewelers, Shreve & Co., Lux Bond & Green, London Jewelers, Fredric H. Rubel Jewelers, Russell Korman, E.D. Marshall, Eiseman Jewels, Solomon Brothers, Rogers, etc.), the company e-commerce site at harrykotlar.com, and high-touch direct programs (Kotlar Luxury Experience trips to Hong Kong and Luxury Viewing Experience) for orders above $50,000, with international reach into China, Hong Kong, Japan, Macau, Singapore, Taiwan, and Guam.

Name

Harry Kotlar

Legal name

Harry Kotlar & Co.

Website

https://harrykotlar.com

Company type

Private

Founded year

1948

Operating status

Operating

Headcount range

51–100 employees

Short description

Harry Kotlar is a privately held, family-owned luxury diamond jewelry house founded in 1948 in Los Angeles. It crafts handmade fine jewelry — including its proprietary Kotlar Cushion® diamond — through Italian master artisans, distributing via 25+ US authorized retailers and white-glove concierge services to high-net-worth clientele.

Ownership category

akta.pro rank

Product category

Luxury Diamond Jewelry

NAICS

Jewelry and Silverware Manufacturing (339910), Jewelry, Watch, Precious Stone, and Precious Metal Merchant Wholesalers (423940)

SIC

Jewelry, Precious Metal (3911), Wholesale-Jewelry, Watches, Precious Stones & Metals (5094)

akta.pro primary industry

High Jewelry & Haute Joaillerie (CRAKAAAE)

akta.pro secondary industries

Engagement Rings (CRAKACAA), Bridal & Engagement Jewelry Manufacturing (CRAKAIAC), Bridal Diamond Jewelry (Earrings, Necklaces, Bracelets) (CRAKACAD)

Keywords

• Luxury diamond jewelry
• Handcrafted engagement rings
• Fine bridal jewelry
• Loose cushion diamonds
• Artisan pave designs

Headquarters

HQ city

Los Angeles

HQ country

United States

HQ region

North America

Offices22 records

Markets served

GTM type

B2C

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Fine Jewelry Sales: Direct sales of handcrafted jewelry including rings, bands, bracelets, earrings, necklaces, and pendants through retail partners and direct concierge services. High-value items ($185,000+) handled through specialized concierge with personalized service options.
2. Loose Diamond Sales: Sales of Kotlar Cushion loose diamonds and potentially other certified diamonds. Diamonds range from 0.70 carats to 20 carats with AGS Laboratory certification.
3. Custom/Special Orders: Custom jewelry creation services including custom sizing, engraving, stone resetting, and combining elements from different collections. Master craftsmen work directly with clients to realize desired pieces.
4. Lifetime Trade-Up: Lifetime trade-up plan allowing clients to exchange previously purchased Harry Kotlar jewelry for new pieces. Original purchase price is applied toward new item, which must be 50% more expensive.

Pricing tiers

Go-to-market motion2 records

Distribution channels4 records

Marketing channels5 records

Core offering

Harry Kotlar designs, manufactures, and sells handcrafted luxury diamond jewelry including rings, bands, bracelets, earrings, necklaces, and pendants, alongside proprietary loose Kotlar Cushion® 61-facet diamonds. All pieces are crafted by Italian master artisans using old-world techniques unchanged for centuries, distributed through 25+ authorized retail partners across the United States and direct concierge and e-commerce channels.

Product overview

Harry Kotlar is a luxury jewelry design house offering handmade diamond jewelry crafted by Italian master artisans using old-world techniques. The company operates three main collections: The Kotlar Collection (15 sub-lines including Arabesque, Edwardian, Victorian, etc.), Artisan Pavé (the hallmark design with motifs like Bloom, Scallop, Criss Cross, French Cut, Leaf, and Lily), and Kotlar 1948 (contemporary collection for younger collectors). The proprietary Kotlar Cushion® diamond (61-facet cushion cut) serves as a core product alongside loose stones. All pieces are made by hand with no computers or digital techniques, by a team of four artisans per piece. The company also offers premium services including The Concierge (personalized customer service), Kotlar Luxury Experience (exclusive Hong Kong trip for $50K+ orders), and Lifetime Trade-Up program. Founded in 1948 in California, the company has built a seven-decade legacy spanning jewelry design, ethical diamond sourcing, and artisanal craftsmanship.

Differentiator

Problem solved

Functional benefit

Brands

• Kotlar Cushion: The World's Most Brilliant Cushion Cut Diamond - a 61-facet cushion cut diamond, described as the company's signature diamond product.
• Artisan Pavé
• Kotlar 1948
• Plasmare Collection
• Interlude Collection
• Lily Artisan Pavé

Products and services

• Artisan Pavé Collection The hallmark Harry Kotlar collection featuring old-world hand carving of platinum or 18k gold with pavé melee in motifs including Bloom, Chevron, Diamond Star, Floral, Criss Cross, French Cut, Leaf, Lily, and Scallop, sold through retail partners and direct channels.
• The Kotlar Collection Main luxury jewelry collection featuring 15 sub-lines including Arabesque, Chantilly, Classico, Crescendo, Crown, Edwardian, Harmonie, Helen, Luca, Luminesce, The Vault, Twist, Unity, Victorian, and Kotlar Petite.
• Kotlar 1948 Collection Contemporary collection aimed at younger jewelry collectors, featuring delicate and refined motifs without sacrificing old-world craftsmanship, including exclusive ruby pieces for the American Heart Association Go Red for Women benefit.
• Kotlar Cushion® Diamond Proprietary 61-facet cushion cut diamond marketed as 'The World's Most Brilliant Cushion Cut Diamond,' available in color range D to K, clarity IF to SI2, sizes from 0.70 to 20 carats, each laser-inscribed by AGS Laboratory.
• Harry Kotlar Jewelry (Rings, Bands, Bracelets, Earrings, Necklaces, Pendants) Full range of handmade diamond jewelry including engagement rings, wedding bands, bracelets, earrings, necklaces, and pendants, all crafted by Italian master artisans using old-world techniques without computers or digital tools.
• Lily Artisan Pavé Collection Sub-collection of 18 pieces including rings, bracelets, pendants, and earrings in 18k white, yellow, or rose gold, named after founder Harry Kotlar's wife Helen's favorite flower.
• Plasmare Collection Collection featuring artistic bending of platinum wires using hand-forged, hand-pulled, and hand-shaped techniques in four-prong and six-prong heads with platinum, 18k white, yellow, or rose gold shanks.
• Interlude Collection Full suite including engagement ring, band, and earrings inspired by Baroque era orchestral music, featuring double-prong hand-pulled metal and Hearts and Arrows melee diamonds.
• Loose Stones Individual Kotlar Cushion and other certified diamond stones available for purchase with AGS or GIA laboratory certification, ranging from 0.70 carats to 20 carats.
• Kotlar Luxury Experience Exclusive white-glove program for clients with $50,000+ orders, including airfare and luxury accommodations to Hong Kong for in-person collection of jewelry, offered to clients in China, Guam, Hong Kong, Japan, Macau, Singapore, Taiwan, and United States.
• Luxury Viewing Experience Commitment-free viewing of pieces valued at $50,000+ at a secure viewing venue in Hong Kong, with a complimentary two-night hotel suite provided upon future purchase; customer covers travel expenses.
• Lifetime Trade-Up Program Trade-in plan allowing clients to exchange previously purchased Harry Kotlar jewelry for new pieces, with original purchase price applied toward a new item that must be at least 50% more expensive than the original.

Quantifiable outcome

• 61 facets in Kotlar Cushion diamond (compared to standard cushion cuts)
• +3 more outcomes

Named customers11 records

Segments2 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Partnerships

Eight partnerships are on record, tiered core, major and minor.

• BC Clark JewelerscoreChannel Partner/ Reseller/ DistributorOklahoma's oldest jewelry store (founded 1892) and oldest business under same family ownership. Partnership spanning nearly 30 years. Commissioned the Heart of Oklahoma Diamond masterpiece with Harry Kotlar featuring an 18.92 carat Fancy Intense Yellow diamond. Three Oklahoma City locations carry Harry Kotlar products.
• Shreve & Co.coreChannel Partner/ Reseller/ DistributorHistoric San Francisco retailer with Harry Kotlar boutique. Hosted the premiere of 'Made by Hand, Shaped by History' film in December 2017. Also partnered for Shop for a Cause event benefiting American Heart Association with exclusive Harry Kotlar pieces from Kotlar 1948 collection featuring rubies.
• London JewelerscoreChannel Partner/ Reseller/ DistributorMulti-location fine jewelry retailer in New York (Manhattan, Southampton, Americana Manhasset, Wheatley Plaza, Glen Cove, East Hampton) carrying Harry Kotlar products.
• Fredric H. Rubel JewelerscoreChannel Partner/ Reseller/ DistributorCalifornia fine jewelry retailer (Laguna Beach and Mission Viejo locations). Shared anniversary celebration with Harry Kotlar in October 2019, celebrating over 150 years of combined history.
• Lux Bond & GreenmajorChannel Partner/ Reseller/ DistributorConnecticut and Massachusetts fine jewelry retailer (West Hartford and Boston locations) carrying Harry Kotlar products.
• American Heart AssociationminorStrategic or Co-development PartnerPartnership through 'Shop for a Cause' event where 20% of proceeds supported AHA's Go Red for Women initiative for Heart Month. Harry Kotlar created three exclusive pieces from Kotlar 1948 collection incorporating rubies.
• American Gem Society Laboratory (AGS)coreTechnology or IntegrationReputable independent diamond laboratory providing certification for Kotlar Cushion diamonds. AGS uses unique numerical grading system quantifying diamond color, clarity, and cut. Each Kotlar Cushion is laser-inscribed by AGS with its certificate number and Kotlar Cushion logo.
• Gemological Institute of America Laboratory (GIA)coreTechnology or IntegrationLeading independent diamond laboratory used by Harry Kotlar for diamond certification. AGS Laboratory numbers correspond to GIA's internationally accepted diamond grading scale.

Scale indicators5 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• De Beers Jewellers: Diamond house operating both vertically integrated diamond supply and a branded high-jewelry retail business, comparable to Harry Kotlar on proprietary diamond branding and high-end engagement/branded diamond jewelry.
• Graff: London-based ultra-luxury diamond house specializing in exceptional single-stone and high-jewelry pieces for HNW collectors, the closest direct competitor to Harry Kotlar's precious-stone, handcrafted haute joaillerie positioning.
• Harry Winston: Iconic American diamond jeweler famous for exceptional stones and handcrafted high jewelry, directly comparable to Harry Kotlar on HNW/celebrity clientele, proprietary diamond branding (Winston Legacy), and bespoke craftsmanship.
• Kwiat: Family-owned NYC diamond heritage brand (founded 1907) focused on signature diamond cuts (Kwiat Star, Kwiat Round) and handcrafted fine jewelry — closest peer on heritage, family ownership, proprietary diamond technology, and US-centric fine-jewelry distribution.
• Chopard: Geneva-based high jewelry and watch maison with an artisan-craft emphasis (in-house ateliers in Geneva), closely comparable to Harry Kotlar on handcrafted high jewelry, HNW clientele, and red-carpet positioning.

Broad incumbents

• Cartier: Dominant luxury jewelry house under Richemont with extensive high-jewelry, bridal, and watch portfolios, comparable to Harry Kotlar on HNW/celebrity clientele and diamond-jewelry positioning, but vastly larger scale and global distribution.
• Boucheron: Historic Parisian high-jeweler renowned for handcrafted couture pieces and signature bridal/engagement jewelry, comparable to Harry Kotlar on heritage craftsmanship and HNW client base, though operating globally within a larger luxury group.
• Tiffany & Co. Iconic diamond and bridal jeweler recently acquired by LVMH, directly comparable on diamond/engagement ring leadership and HNW consumer reach, but operating on a vastly larger mass-luxury to high-luxury continuum.
• Van Cleef & Arpels: Maison's flagship high-jewelry and bridal lines (including signature engagement designs) place it as a broader incumbent operating at the same haute joaillerie tier Harry Kotlar targets, but at vastly greater scale and global reach.
• Bvlgari: Italian heritage jeweler within LVMH offering high-jewelry, bridal, and celebrity-driven designs; comparable on Italian artisan heritage, HNW positioning, and celebrity marketing at much greater international scale.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks5 records

Key highlights7 records

Customer concentration

• Xx.com/harrykotlar
• Facebookfacebook.com/harrykotlarjewelry
• Instagraminstagram.com/harrykotlar

Compliance3 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 records

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 Harry Kotlar