Trans Atlantic Gem Sales

What Trans Atlantic Gem Sales does

Trans Atlantic Gem Sales (TAGS) is a B2B rough diamond and gemstone tender and auction house connecting producers and suppliers with a curated international base of leading buyers and manufacturers. The company operates 5 strategic locations across three key diamond-producing and trading countries — the United Arab Emirates, South Africa, and Angola — with headquarters at 16C Almas Tower in Dubai's Jumeirah Lakes Towers (recognized as the world's leading rough diamond trading hub), a fully owned purpose-built tender facility in Johannesburg, an additional office in Cape Town, and exclusive tender operations in Luanda conducted in partnership with SODIAM, Angola's national diamond trading company. Its core product is a technology-driven sales platform enabling rough diamond producers to sell their entire production via tender or auction, supported by Sorting & Valuation services, state-of-the-art Viewing Facilities, and an official Branding service that allows mines to maintain their identity through TAGS events.

The underlying technology consists of a proprietary online e-auction platform (eauction.transatlanticgemsales.com) accessed by invitation-only registered bidders via secure user ID/password login, complemented by bespoke tender management systems tailored for diamond tender operations including secure bid submission and lot management, and physical viewing rooms with cutting-edge security infrastructure in Dubai and Johannesburg. The business is operated through the legal entity eDiamond DMCC (DMCC-071931), a private limited company incorporated in Dubai, UAE.

TAGS' go-to-market is event-driven, generating revenue through transaction fees on completed tender and auction sales and through professional services fees for sorting, valuation, and branding work. Pricing is not publicly disclosed and operates on a quote-based, individually negotiated model with registered bidders and suppliers. On the supply side, TAGS' two-sided platform is anchored by its February 2022 exclusive mandate from SODIAM and the Government of Angola to oversee the establishment of The Angolan Diamond Exchange and conduct tender organization and management in Luanda — a regulatory and partnership moat that provides differentiated access to Angolan production and helps position Angola as a manufacturing and trading hub. On the demand side, the company relies on direct relationship-based marketing through its industry network, with its international tenders (including the upcoming June/July 2026 Dubai Rough Diamond Tender) serving as the primary engagement mechanism. The company has 11–50 employees, no disclosed funding rounds, and no parent company.

Name

Trans Atlantic Gem Sales

Legal name

eDiamond DMCC

Website

https://transatlanticgemsales.com

Company type

Private

Founded year

2017

Operating status

Operating

Headcount range

11–50 employees

Short description

TAGS is a B2B rough diamond and gemstone tender and auction house operating from Dubai with facilities in South Africa and Angola, providing producers and suppliers global market access via a proprietary online e-auction platform, physical viewing facilities, and an exclusive partnership with SODIAM.

Ownership category

akta.pro rank

Product category

Diamond Tendering & Auction Services

NAICS

Jewelry, Watch, Precious Stone, and Precious Metal Merchant Wholesalers (42394), Wholesale Trade Agents and Brokers (4251)

SIC

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

akta.pro primary industry

Diamond/Gemstone Auction Houses & Tender Platforms (CRAKAJAI)

akta.pro secondary industry

Rough Diamond Trading & Brokerage (CRAKAJAC)

Keywords

• Rough diamond tenders
• Gemstone auctions
• Diamond sorting valuation
• Online diamond auctions
• Rough diamond sales

Headquarters

HQ city

Dubai

HQ country

United Arab Emirates

HQ region

Middle East

Offices4 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Infrastructure, Technology or R&D, Marketing or Sales, Supply Chain

Revenue model

1. Tender and Auction Services: TAGS generates revenue by facilitating rough diamond and gemstone tenders and auctions. Suppliers pay fees to sell their production through TAGS' platform, while buyers pay associated charges. The company operates a secure online auction system where registered bidders compete for lots, with transaction fees and commissions collected on completed sales.
2. Sorting and Valuation Services: TAGS provides assortment and valuation services across the full range of sizes, qualities and colours of rough diamonds, generating service fees from producers and suppliers.

Go-to-market motion1 record

Distribution channels2 records

Marketing channels1 record

Core offering

Trans Atlantic Gem Sales (TAGS) operates as a B2B rough diamond and gemstone tender/auction house, providing producers and suppliers with a technology-driven sales platform to sell their entire production via tender or auction. The company complements its auction services with sorting and valuation, state-of-the-art viewing facilities in Dubai and Johannesburg, and branded mine launch support.

Product overview

Trans Atlantic Gem Sales (TAGS) operates as a rough diamond and gemstone tender/auction house offering a unified sales platform. The core product is the Tenders & Auctions service, supported by Sorting & Valuation, Viewing Facilities, and Branding modules. The company operates an e-auction platform at eauction.transatlanticgemsales.com for online bidding, with physical operations in Dubai, Luanda, Johannesburg, and Cape Town.

Differentiator

Problem solved

Functional benefit

Products and services

• Tenders & Auctions Technology-driven sales platform enabling rough diamond producers to sell their entire production via either tender or auction. Targets mining producers, national diamond trading companies, and registered global buyers/manufacturers.
• Sorting & Valuation Assortment and valuation services across the full range of sizes, qualities, and colours of rough diamonds, provided to producers and suppliers.
• Viewing Facilities State-of-the-art viewing rooms in Dubai and Johannesburg facilities incorporating cutting-edge technology, stringent security measures, and immaculate design for hosting sale events. Used by registered bidders to inspect diamonds prior to bidding.
• Branding Services Official company branding enabling producers and mines to launch their product line through TAGS tenders/auctions while maintaining their own brand identity.

Segments2 records

Ideal customer profiles2 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Partnerships

One partnership is on record.

• SODIAM (Angola)coreStrategic or Co-development Partner · 1 February 2022In February 2022, TAGS was selected from leading Tender Houses worldwide to oversee the establishment of The Angolan Diamond Exchange and conduct the Organisation and Management of Tenders on behalf of SODIAM and the Government of Angola in Luanda. TAGS has since commenced tender operations and held multiple successful sales in Luanda, helping Angola establish itself as a world-class manufacturing and trading hub.

Scale indicators3 records

Recent moves7 records

Expansion highlights4 records

Direct peers

• I. Hennig & Co. I. Hennig is a global rough diamond brokerage and tender house based in London/Antwerp. Directly competes with TAGS for rough diamond producer mandates and runs parallel tender operations across producing countries.
• Bonas Group: Bonas is a long-established rough and polished diamond tender/brokerage house operating from Antwerp and other centres. Directly comparable to TAGS as a B2B tender operator serving diamond producers and buyers worldwide.
• Rapaport Group: Rapaport operates the RapNet trading network and benchmark price list for polished and rough diamonds. Comparable to TAGS as a diamond trading platform, though focused on polished and price-information rather than physical rough tenders.
• Joseph N. Weyl (JNW): Joseph N. Weyl is a specialist rough diamond consulting and tender house serving African producers. Closely comparable to TAGS in tender operations and producer-side service offering.

Broad incumbents

• Sotheby's: Sotheby's auctions include significant diamond and jewellery sales. Comparable to TAGS as an auction-driven distribution channel for precious stones, though retail/collector-oriented rather than wholesale rough.
• Christie's: Christie's runs luxury auctions including notable diamond and gemstone sales. Comparable to TAGS as a high-end auction house, though serving end collectors rather than B2B rough producers.
• Gübelin Gem Lab: Gübelin operates gemstone auction, grading and trading services. Comparable to TAGS in the high-value gemstone/diamond auction space, though focused on coloured gemstones and signed jewels rather than rough industrial tenders.
• Anglo American (De Beers) - rough sales division: Anglo American owns De Beers, which historically ran the dominant rough diamond sales system (sight boxes). Comparable to TAGS as the incumbent rough diamond distribution channel whose clients increasingly seek TAGS-style alternative tenders.
• HB Antwerp: HB Antwerp is a rough diamond manufacturer and technology-enabled trader. Comparable to TAGS as a participant in rough diamond value-chain infrastructure, though vertically integrated into manufacturing rather than purely a tender house.

Others

• Dubai Multi Commodities Centre (DMCC): DMCC is the Dubai free zone in which TAGS is incorporated (eDiamond DMCC, Licence DMCC-071931) and operates the Dubai Diamond Exchange. Comparable as the host ecosystem for TAGS' trading infrastructure and as a broader rough diamond marketplace enabler.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks5 records

Key highlights6 records

Customer concentration

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 Trans Atlantic Gem Sales