Information current as of 11 August 2026

A customer buys a diamond. The diamond is supposed to belong to the customer from day one. Over a term of twelve months, the customer receives monthly discount credits. Afterwards, the customer can take delivery of the stone, sell it independently or sell it back to the company at the original purchase price.

That is how the model was initially presented under Diamond Solution and, since 2026, under STIG Rock.

The decisive question is not whether a diamond exists. The decisive question is:

How can the same purchase price simultaneously finance the diamond, high monthly credits, the multi-level distribution system, all operating costs and a potential repurchase?

This article reconstructs the model using the published documents. Company statements, registry data, our own calculations and outstanding evidence are deliberately kept separate.

Editorial note: This article provides journalistic and economic analysis. It does not constitute individual investment, tax or legal advice. An unresolved question is not evidence of any particular legal or economic conclusion.

1. Overview: From Diamond Solution to STIG Rock

Diamond Solution offered so-called Solution Plans for the purchase of natural diamonds.

According to the published documents, these were not funds, shares or cryptocurrencies. The customer was intended to acquire a physical diamond as a tangible asset.

The plans were offered at different levels. The documented amounts ranged from US$100 to US$100,000. The standard term was twelve months.

The model consisted of four steps:

The customer selects a Solution Plan.

A physical diamond is supposed to be allocated to the customer immediately.

The customer receives monthly discount credits during the term.

At the end of the term, the customer can retain the diamond, take delivery of it or sell it back.

According to the published plans, additional VIP packages could increase the monthly credits.

In 2026, the model was reorganised. According to the company's account, Diamond Solution became the STIG Group. The former distribution division has since operated under the name STIG Rock.

The current website describes STIG Rock as a combination of diamond ownership, administration, digital records and international distribution. STIG Rock: current company website

2. The New Four-Pillar Structure

The STIG Group now presents its structure as comprising four divisions:

STIG Group: strategy, capital and corporate management;

STIG International: international trading in GIA-graded diamonds;

STIG Rock: network, reach and distribution; and

Ethical Mines: sourcing, provenance and conflict-free supply chains.

According to the company, these divisions are intended to form a largely integrated value chain: from sourcing rough diamonds, cutting and quality assessment through to trading and distribution to the customer. STIG Group: the group structure

This presentation does not, however, answer which divisions already operate as independent legal entities.

The group website refers to “four specialised companies”. The current legal notice, however, identifies only STIG Gemstone FZCO DMCC, registration number DMCC-1007195, as the responsible company. It does not provide separate registry details for STIG Group, STIG Rock or Ethical Mines. STIG Group: legal notice

This does not mean that no other companies or agreements exist. It means that the legal allocation of the four publicly presented divisions cannot be fully determined from the website alone.

For customers, that allocation is crucial:

Which company enters into the purchase agreement?

Which company receives the purchase price?

Which company owes the discount credits?

Who holds the diamond in custody?

Who promises to repurchase it?

Against which company can a delivery or payment claim be asserted?

A brand can describe services. Ultimately, however, the specific contractual counterparty is the party legally bound.

3. The Claimed Value Chain

The company explains the monthly credits by reference to margins generated in the diamond trade.

Rough diamonds are said to be purchased directly, cut, assessed and traded during the contractual term. Because traditional intermediary stages are eliminated, the associated margins are not supposed to remain with brokers, wholesalers or jewellers. Part of this trading margin is said to be passed on to customers.

At first glance, that sounds plausible: anyone able to buy more cheaply and sell more efficiently can generate a price advantage.

The decisive economic examination, however, begins only after that point.

At least the following figures would be required to make the calculation transparent:

the average purchase price of the rough diamonds;

the origin, weight and quality of the stones purchased;

the actual yield after cutting;

cutting and polishing costs;

the cost of GIA reports or other grading reports;

transport, insurance and storage costs;

the sale prices achieved in each trading cycle;

the duration and number of those trading cycles;

the amount of the trading margins actually realised;

how the monthly credits are financed; and

how previous repurchases were financed and the volume involved.

At the time the report was prepared, the complete basis for these calculations was not publicly transparent.

Nor does the current STIG International website provide specific purchase or sales calculations. It describes selected partner mines, international trading networks and partner cutting facilities. According to the website, an online shop is still under development; sales are conducted through direct enquiries and personal consultation. STIG International

4. Testing the Numbers: What Is Already Committed?

Our calculation uses only the percentages contained in the published product and business documents.

It does not examine whether the credits were actually paid. It shows only what proportion of revenue has, mathematically, already been promised or allocated to the compensation system.

The starting point is €100,000 in revenue.

The calculation includes:

the discount credits under the respective Solution Plan; and

the Unilevel bonus totalling 18 per cent.

It does not include:

the Infinity bonus;

the Matching bonus;

World Pools;

rank bonuses;

the purchase of the rough diamond;

cutting and polishing;

GIA grading;

insurance, transport and storage;

administration and technology;

repurchases;

taxes and fees; or

company profit.

Plan

Discount credits

Unilevel bonus

Already committed

Mathematically remaining

SP5 without VIP

37.2%

18.0%

55.2%

44.8%

SP5 with VIP 3

73.2%

18.0%

91.2%

8.8%

SP6 without VIP

38.4%

18.0%

56.4%

43.6%

SP6 with VIP 3

74.4%

18.0%

92.4%

7.6%

SP7 without VIP

39.6%

18.0%

57.6%

42.4%

SP7 with VIP 3

75.6%

18.0%

93.6%

6.4%

Under the SP7 plan with VIP 3, €93,600 of every €100,000 is therefore already mathematically committed to discount credits and the Unilevel bonus.

That leaves €6,400.

Under this simplified calculation, that €6,400 would still have to finance the diamond, all processing, grading, storage and administration, every bonus not included in the calculation and the company's profit.

The calculation does not prove insolvency or insufficient asset backing. It illustrates the exceptionally high operating margin that would be required to finance every component simultaneously.

A complete answer is possible only if the complete calculation is disclosed.

5. The Distribution System

In addition to the purchase of diamonds, the model includes a multi-level distribution system.

The published documents refer to:

the Unilevel bonus;

the Infinity bonus;

the Matching bonus;

World Pools; and

rank bonuses.

The Unilevel bonus covers sales generated across multiple levels. Further participations are added once certain career levels are reached. According to the documents, three per cent of worldwide revenue is to be distributed among various World Pools. Rank bonuses can be awarded in the form of diamonds.

During one documented sales conversation, high personal sales figures and monthly income were presented. The person speaking also stated that he had moved from TGI in December.

Two statements summarise the way the opportunity was presented:

“This is all solid, everything is legal, everything is documented, everything has been checked.”

and:

“You do not even have to buy anything yourself to qualify for full commissions.”

These quotations document statements made during the conversation. They do not constitute independent evidence that all legal, economic and technical claims had been verified.

Further figures are required to assess the economics of the distribution system:

the proportion of sales made to independent end customers;

the proportion of purchases made by distribution partners;

the number and volume of actual repurchases;

the total amount paid out under every type of bonus;

the proportion of credits reinvested;

the cost of international distribution; and

the relationship between the product margin and distribution remuneration.

Only then can it be determined whether value is generated predominantly through diamond trading or through the continuing sale of new plans.

6. Ownership: Which Diamond Belongs to Which Customer?

STIG Rock advertises “ownership from day one” and refers to a purchase agreement, an invoice and certified storage. STIG Rock

For ownership to be enforceable in practice, however, the wording of the agreement is not the only relevant factor. The specific diamond must be clearly identifiable and allocated to the customer.

Reliable evidence of ownership and inventory should include at least:

a precise description of the diamond;

carat weight, colour, clarity and cut;

an individual GIA report number or equivalent identification;

a matching laser inscription on the stone;

the storage location and independent confirmation from the custodian;

evidence of segregated custody or clear individual allocation;

insurance cover and the identity of the policyholder;

rules governing loss, damage and replacement;

a clear delivery process; and

provisions governing the insolvency of any company involved.

A simple credit entry in the back office or a non-individualised confirmation would not fully answer the question of which specific stone belongs to the customer.

The same applies to a repurchase. A repurchase promise is only as reliable as the specific company bound by it and that company's ability to finance the repurchases when they fall due.

7. What a GIA Report Confirms – and What It Does Not

Advertising materials frequently refer to “GIA-certified diamonds”.

The GIA itself does not use this term. It expressly states that it neither certifies nor appraises diamonds. The institute issues grading reports containing technical information about dimensions, quality characteristics and identification. It does not determine a monetary value. GIA: certification and appraisal

A GIA report can document characteristics including shape, colour, clarity, cut, carat weight and treatments. The information recorded can be checked using the report number.

It does not automatically confirm:

the purchase price paid by the customer;

the current market value;

a guaranteed resale price;

the customer's ownership;

the storage location;

the financing of the discount credits; or

a company's ability to repurchase the stone.

GIA examines both natural and laboratory-grown diamonds and identifies them differently. Whether a specific stone is natural or laboratory-grown can therefore be verified using the appropriate report and corresponding laser inscription. Without that individual allocation, no reliable statement can be made about a specific stone. GIA: natural and laboratory-grown diamonds

8. The Kimberley Process: Proof of Origin with Clear Limits

Ethical Mines states that every diamond is documented from mine to market and that its supply chain fully complies with the Kimberley Process. Ethical Mines

The Kimberley Process is an important international system. Its legal core, however, is narrower than many advertising statements might suggest.

According to official information, the system primarily regulates the cross-border trade in rough diamonds. Every relevant shipment between participating countries requires a valid government-issued Kimberley Process certificate. Cut and polished diamonds, by contrast, do not require such a certificate. Kimberley Process: information for business · Kimberley Process: FAQ

A Kimberley Process certificate for a shipment of rough diamonds is therefore not automatically a complete, individual record of origin for every stone subsequently cut from that shipment.

The “mine-to-market” traceability presented by STIG would additionally require:

identification of the specific mine of origin;

the number and a copy of the relevant Kimberley Process documents;

allocation of the rough-diamond shipment to the individual cut stone;

documentation of every transfer of ownership and processing stage;

the names of all cutting facilities, dealers and custodians involved; and

independent verification of the chain.

The current STIG website describes this type of evidence in general terms. The documents reviewed did not include publicly accessible sample files or independent audit reports covering the complete chain.

9. Mario Steinrigl and Previous Companies

Mario Steinrigl appeared publicly as an executive and distribution partner in connection with Diamond Solution and STIG Rock.

Published articles cited the following company figures, among others:

operations in 16 countries;

more than 5,800 active distribution partners; and

revenue exceeding €31 million.

These are company or distribution statements. The report was not based on any independent public audit of these figures.

Public registries also record previous Austrian companies associated with Mario Steinrigl, including ST.M Sachwerte GmbH, ST.M True Values Holding GmbH and ST.My Trade GmbH.

The original report also examined a court publication stating that, in 2026, requested debt settlement proceedings were not opened because the available assets were insufficient to cover the costs of the proceedings, and insolvency was established.

This is not a criminal conviction. The publication records only the outcome of those specific debt settlement proceedings. On its own, it proves neither a breach of duty in connection with STIG nor any particular quality of the current business model.

10. Further Developments Since the Report

The community analysis was completed on 28 June 2026. Two publicly documented developments followed.

The New STIG Website

The new group website now presents the rebranding and four-pillar structure publicly. It therefore confirms the transition from Diamond Solution to the STIG Rock distribution division and the positioning of STIG International and Ethical Mines within the new brand identity.

At the same time, the key economic figures remain undisclosed: the website does not quantify purchases, sales, margins, the cost of trading cycles, the volume of repurchases or the complete financing of every type of bonus.

ST.M Sachwerte GmbH in Liquidation

According to the official Austrian company register, ST.M Sachwerte GmbH was dissolved in July 2026 and is in liquidation. Mario Steinrigl has been registered as liquidator since 21 July 2026. EVI/company register: ST.M Sachwerte GmbH in liquidation

This does not automatically establish anything about STIG Rock or the companies in Dubai. It is a different company. Because the personal connection is publicly documented, however, this development belongs in the complete chronology.

11. What Is Documented – and What Remains Unresolved?

Publicly Documented

Diamond Solution offered twelve-month Solution Plans for diamonds.

The plans combined the purchase of a product with monthly discount credits.

Additional VIP packages could increase the credits.

Delivery, an independent sale or repurchase were described as options at the end of the term.

The product was accompanied by a multi-level compensation system.

Diamond Solution was incorporated into the STIG Group's new brand structure in 2026.

STIG Rock now forms the distribution division.

The current group legal notice identifies STIG Gemstone FZCO DMCC.

GIA reports can document a diamond's technical characteristics and whether it is natural or laboratory-grown.

The Kimberley Process regulates the international trade in rough diamonds between participating countries through a government certification system.

ST.M Sachwerte GmbH has been in liquidation since July 2026.

Not Conclusively Verifiable from Publicly Available Information

the complete calculation supporting the claimed trading margins;

the financing of all discount credits and types of bonus;

the number and volume of repurchases actually completed;

the identity of the specific company responsible for repurchases;

the complete legal allocation of all four STIG divisions;

clear customer-specific allocation of every diamond;

independent inventory and storage confirmations;

the complete chain of origin for each individual stone;

independent verification of the published revenue and partner figures; and

the overall economic calculation including the product, operations, distribution and profit.

12. Summary

The diamond is not the complicated part of the model.

The complicated part is the sum of the promises surrounding the diamond.

The customer is supposed to own it from day one.

The customer is supposed to receive high credits over twelve months.

Multiple distribution levels are supposed to be remunerated.

Additional pools and rank bonuses are added.

The diamond must be purchased, cut, graded, transported, insured and stored.

At the end, repurchase at the original purchase price is also supposed to be possible.

Under the highest model calculated, 93.6 per cent of the initial revenue is already committed to discount credits and only one part of the commissions. Mathematically, 6.4 per cent remains for every other cost.

That is not a final assessment. It is an open calculation.

It can be answered only with complete figures: purchases, sales, margins, costs, inventory, repurchases and every form of remuneration.

A diamond can be examined.

So can a business model.

The Full Report

The report “STIG Group / Diamond Solution – Communityanalyse” contains the business model, the distribution system, the complete sample calculations, the verbatim transcript of the sales conversation, registry information and all unresolved questions.

The report is available as a free download in German only. No English-language version of the full report is currently available. HustlerBiz serves as the download and distribution platform.

Download the full report – German only

Sources and Editorial Note

This article is based on the community analysis dated 28 June 2026, Diamond Solution product and business documents, STIG Group publications, public registries, official company-register data, documented distribution statements and our own calculations using the published percentages.

Company statements are identified as such. Our calculations do not include assumed purchase, sale or cost figures.

STIG, Mario Steinrigl and any other parties referred to may submit verifiable additions or corrections. Verifiable amendments will be identified and incorporated into the chronology.