M. Geller
- Company typePrivate
- Founded1984
- HeadquartersChicago, United States
- Headcount11–50
- GTM typeB2B
- OfferingServices
What M. Geller does
M. Geller Ltd. is a Chicago-based, founder-owned wholesale distributor of loose diamonds and gemstones that has operated since 1984 under a 'never-say-no' expert-curated memo service model targeting independent retail jewelers across the United States. Retailers submit specific diamond requests by phone, text, email, or through the company website and receive two to three hand-selected, quality-controlled options within 48 hours, with flexible memo terms that allow evaluation before purchase. The company aggregates inventory across four product categories—natural diamonds (including fancy color yellows, oranges, pinks, blues, greens, browns, and blacks), lab-grown diamonds (CVD and HPHT, including fancy color variants), fancy color lab-grown diamonds, and colored gemstones (sapphire, ruby, emerald)—with all natural diamonds sourced under Kimberley Process certification and the company maintaining Responsible Jewelry Council certified membership.
The supporting technology stack consists of a web-based B2B search tool (First Choice Web Search) for filtering aggregated inventory by standard 4Cs plus lab certification, native iOS and Android mobile applications, a coming-soon B2B2C Bridal Ring Creator, and the M. Geller Academy digital education hub. A strategic partnership with WD Lab Grown Diamonds extends the inventory pool to include climate-neutral, US-origin-traceable lab-grown stones. The company is differentiated primarily by human expertise rather than automation, with the firm claiming '250 years of combined diamond expertise' across its team of roughly 15 specialists as the core value driver.
M. Geller generates revenue through wholesale transaction margins on diamond and gemstone sales to retail jewelers, operating on a quote-based, pay-as-you-go pricing model with no public rate cards. Distribution is exclusively B2B through the direct expert sales team plus website and mobile channels; the company does not run a direct-to-consumer storefront. The customer base consists of independent SMB retail jewelers, with several named long-term relationships spanning more than three decades, indicating high account persistence but fragmentation across many small accounts rather than concentration on a few enterprise buyers.
M. Geller firmographics
Firmographics- Name
- M. Geller
- Legal name
- M. Geller Ltd.
- Website
- https://mgellerdiamonds.com
- Company type
- Private
- Founded year
- 1984
- Operating status
- Operating
- Headcount range
- 11–50 employees
- Ownership category
- akta.pro rank
M. Geller industry classification
Industry- Product category
- Wholesale Diamond Distribution
- NAICS
- Jewelry, Watch, Precious Stone, and Precious Metal Merchant Wholesalers (423940)
- SIC
- Wholesale-Jewelry, Watches, Precious Stones & Metals (5094)
- akta.pro primary industry
- Polished Diamond Trading & Brokerage (CRAKAJAD)
- akta.pro secondary industries
- Synthetic/Lab-Grown Diamonds & Gemstones (Manufacturing & Trading) (CRAKAJAM), Polished Gemstone Trading & Brokerage (CRAKAJAF), Diamond & Gemstone B2B Exchanges/Marketplaces (CRAKAJAJ)
Keywords
Where M. Geller is headquartered
LocationHeadquarters
- HQ city
- Chicago
- HQ country
- United States
- HQ region
- North America
Offices1 record
Markets served
M. Geller business model
Business model- GTM type
- B2B
- Offering type
- Services
- Cost components
- Personnel, Operations, Marketing or Sales, Technology or R&D, Supply Chain
Revenue model
- Wholesale Loose Diamond Sales: M. Geller operates as a B2B wholesale diamond distributor selling special order loose natural and lab-grown diamonds to retail jewelers on a memo (memorandum) basis. Jewelers can request stones for evaluation without upfront payment, with flexible terms. Revenue is generated through the sale of diamonds at wholesale prices to retail jeweler customers.
- Lab-Grown Diamond Sales: Sale of lab-grown diamonds (CVD and HPHT varieties) including fancy color lab-grown diamonds. The company also partners with WD Lab Grown Diamonds for climate-neutral sustainability-rated options with full US origin traceability.
- Fancy Color Diamond Sales: Sale of fancy color natural diamonds (yellow, orange, pink, blue, green, brown, black) and fancy color lab-grown diamonds to retail jewelers for custom jewelry creation.
- Gemstone Sales: Sale of loose gemstones including sapphires, rubies, and emeralds to retail jewelers for use in custom jewelry designs.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Other | Pay-as-you-go | Quote-based special order pricing for retail jewelers |
Go-to-market motion2 records
Distribution channels3 records
Marketing channels6 records
M. Geller product offering
Product offeringCore offering
M. Geller is a wholesale distributor of special order loose diamonds and colored gemstones, supplying retail jewelers across the United States on memo terms. The company curates natural diamonds, fancy color natural diamonds, lab-grown diamonds, fancy color lab-grown diamonds, and gemstones (sapphires, rubies, emeralds), hand-selecting and quality-controlling 2-3 options per retailer request and delivering them within 48 hours. Sales are supported by a proprietary web search tool, iOS/Android mobile apps, and an in-development Bridal Ring Creator.
Product overview
M. Geller is a Chicago-based wholesale diamond and gemstone company offering a curated special-order memo service for retail jewelers. The core offering centers on four main product categories: Natural Diamonds (including Fancy Color varieties), Lab-Grown Diamonds (including Fancy Color varieties), and Gemstones (Sapphire, Ruby, Emerald). The portfolio is supported by M. Geller Academy for education, First Choice Web Search for inventory access, and a Mobile App for on-the-go sourcing, all powered by VDB platform technology. The company operates on a 'never-say-no' philosophy, providing hand-selected, quality-controlled stones within 48 hours of request.
Differentiator
Problem solved
Functional benefit
Products and services
- Natural Diamonds Special order loose mined natural diamonds sourced from conflict-free, ethically verified suppliers, curated and quality-controlled by M. Geller experts for retail jewelers. Sold on memo terms across the United States.
- Fancy Color Natural Diamonds Rare natural diamonds occurring in colors including yellow, orange, pink, blue, green, brown, and black, graded by GIA on hue, tone, and saturation scales. Supplied to retail jewelers for custom jewelry creation.
- Lab-Grown Diamonds Diamonds created using HPHT or CVD growth methods from diamond crystal seeds in laboratory reactors, offering ethical and sustainable alternatives to mined diamonds. Includes partnership with WD Lab Grown Diamonds for climate-neutral, sustainability-rated, full US origin traceability stones.
- Fancy Color Lab-Grown Diamonds Lab-grown diamonds engineered to exhibit vibrant colors including pink, yellow, blue, and green through trace element introduction and treatments during growth. Supplied to retail jewelers for custom jewelry creation.
- Gemstones (Sapphire, Ruby, Emerald) Special order colored gemstones including sapphires, rubies, and emeralds, sourced and curated by M. Geller for retail jewelers for use in custom jewelry designs.
Quantifiable outcome
- Diamond search time reduced from up to 1 hour to approximately 2 minutes with M. Geller expert assistance
- +2 more outcomes
Companies that use M. Geller
Customer profileNamed customers4 records
Segments2 records
Ideal customer profiles2 records
M. Geller technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature3 records
M. Geller partnerships and signals
Strategic signalPartnerships
Four partnerships are on record, tiered core and minor.
- WD Lab Grown DiamondscoreM. Geller has partnered with WD Lab Grown Diamonds to offer customers 100% lab grown, climate neutral, and sustainability-rated diamonds with full US origin traceability. WD Lab Grown Diamonds is a pioneering technology company founded in 2008 and based in the Washington D.C. area, and a global leader in high-quality, precision-made CVD lab grown diamonds.
- Responsible Jewelry Council (RJC)coreM. Geller is a certified member of the Responsible Jewelry Council, an industry-led organization that sets standards for ethical practices across the jewelry supply chain, from miners to retailers. RJC certification involves regular third-party audits of management and production processes. The company is committed to proving through independent third-party verification that it respects human rights, does not engage in bribery or corruption, supports transparency of government payments, and implements the OECD 5-Step framework for due diligence.
- Kimberley ProcesscoreM. Geller is a committed member of the Kimberley Process, an international certification scheme established to prevent the trade in conflict diamonds. The company only sells diamonds that are fully compliant with the Kimberley Process Certification Scheme and requires all suppliers to adhere to the same policies in their memos and invoices.
- Jewelers for ChildrenminorM. Geller supports Jewelers for Children (JFC), a charity founded in 1999 by the U.S. jewelry industry to help children in need. Since its inception, JFC has donated more than $61 million to programs benefiting children affected by illness, abuse, or neglect through partners including St. Jude Children's Research Hospital, Make-A-Wish America, and the Elizabeth Glaser Pediatric AIDS Foundation.
Scale indicators4 records
Recent moves6 records
Expansion highlights6 records
M. Geller competitors and assessment
Company assessmentEmerging players
- Rare Carat: Rare Carat is an online diamond and engagement ring marketplace with both B2C and B2B components, offering natural and lab-grown diamond search. Comparable to M. Geller through its diamond search technology and aggregator role, though with stronger DTC orientation.
- Diamond Foundry: Diamond Foundry is a vertically integrated lab-grown diamond producer selling directly to retailers and consumers. Comparable to M. Geller through its lab-grown diamond line and partnerships with retail jewelers, though operating upstream as a manufacturer rather than as a multi-source distributor.
Direct peers
- Leibish & Co. Leibish & Co. is a specialist in fancy color natural diamonds, serving both retail jewelers and end consumers. Closely comparable to M. Geller's fancy color diamond offering and B2B memo model, with similar curation and expertise positioning.
- Adamas Lab-Grown Diamond Suppliers: Adamas International is a B2B lab-grown diamond supplier serving retail jewelers with inventory and sourcing support. Directly comparable to M. Geller's lab-grown diamond wholesale operations and memo-based B2B model.
Broad incumbents
- Brilliant Earth: Brilliant Earth is a leading DTC jewelry retailer specializing in ethically sourced natural and lab-grown diamonds. Comparable to M. Geller's lab-grown line and ethical sourcing positioning (RJC-aligned), though Brilliant Earth sells direct to consumers rather than through retail jewelers.
- Rio Grande: Rio Grande is a long-established B2B wholesaler supplying retail jewelers with findings, metals, loose gemstones, and tools. Comparable to M. Geller in its trade-focused wholesale model serving independent jewelers across the US, though broader in category coverage.
- Blue Nile (Signet): Blue Nile, now part of Signet Jewelers, is one of the largest online diamond and engagement ring retailers. Comparable to M. Geller in loose diamond aggregation and search, though primarily DTC and significantly larger in scale.
- Stuller: Stuller is one of the largest US B2B wholesalers of jewelry supplies, findings, loose diamonds, and gemstones to retail jewelers. While much broader in scope (findings, metals, packaging, tools), it overlaps with M. Geller in wholesale loose diamonds and gemstones serving retail jewelers.
Market position
Strengths1 record
Weaknesses5 records
Competitive moat4 records
Key risks3 records
Key highlights7 records
Customer concentration
M. Geller social profiles
Digital presenceM. Geller compliance and trust
Trust signalCompliance2 records
M. Geller financial estimates
Financial estimateRevenue estimate
Valuation estimate
M. Geller leadership team
Management profileNumber of profiles
Profiles9 records
M. Geller funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
M. Geller M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about M. Geller
What does M. Geller do?
M. Geller is a wholesale distributor of special order loose diamonds and colored gemstones, supplying retail jewelers across the United States on memo terms. The company curates natural diamonds, fancy color natural diamonds, lab-grown diamonds, fancy color lab-grown diamonds, and gemstones (sapphires, rubies, emeralds), hand-selecting and quality-controlling 2-3 options per retailer request and delivering them within 48 hours. Sales are supported by a proprietary web search tool, iOS/Android mobile apps, and an in-development Bridal Ring Creator.
Is M. Geller a public or private company?
M. Geller is a private company. It is classified as founder individual operated bootstrapped and is currently operating.
When was M. Geller founded?
M. Geller was founded in 1984. It employs 11 to 50 people.
Where is M. Geller based?
M. Geller is headquartered in Chicago, United States, in the North America region.
How does M. Geller make money?
Four revenue lines are on record. Wholesale Loose Diamond Sales are the primary driver. The others are lab-Grown Diamond Sales, fancy Color Diamond Sales and gemstone Sales.
Who are M. Geller's main competitors?
Emerging players on record are Rare Carat and Diamond Foundry. Direct peers are Leibish & Co. and Adamas Lab-Grown Diamond Suppliers. Broad incumbents are Brilliant Earth, Rio Grande, Blue Nile (Signet) and Stuller.
Does M. Geller have an API?
No public API is recorded for M. Geller.
What industry is M. Geller in?
M. Geller's product category is Wholesale Diamond Distribution. Its primary akta.pro industry code is CRAKAJAD, Polished Diamond Trading & Brokerage, with a secondary code of CRAKAJAM, Synthetic/Lab-Grown Diamonds & Gemstones (Manufacturing & Trading). Its NAICS code is 423940 and its SIC code is 5094.