diamond report

De Beers and Blockchain: Revolutionising Diamond Tracking – But What About the Other 95%?

The diamond industry has long sought to improve transparency and accountability in how stones are tracked from mine to market. Historically, this relied on paper certificates and manual verification, which were open to forgery, loss, or human error. In recent years, blockchain technology has been introduced as a potential game-changer, offering an immutable digital record of a diamond’s provenance.

From Certificates to Blockchain

Where traditional certificates only provided a snapshot at one point in time, blockchain creates a permanent digital ledger that records every transaction across the supply chain. By using cryptography and decentralisation, platforms like De Beers’ Tracr system provide real-time verification and an unbroken chain of custody for participating diamonds.

For newly mined stones, this represents an important step forward in consumer confidence. Every registered diamond receives a unique digital identity, effectively becoming a “digital twin” of the physical gem. As the diamond travels through cutting, polishing, wholesale, and retail, each transfer is logged and verifiable.

The Limitation: 95% of Diamonds Already in Public Hands

However, while blockchain provides strong assurances for newly mined diamonds, it is important to recognise its limits. More than 95% of all natural diamonds ever mined are already in private hands in jewellery, collections, and across secondary markets. These stones, already in circulation, were never registered on blockchain platforms and therefore cannot be retrospectively traced using this technology.

This means the vast majority of diamonds in existence today remain outside blockchain systems. While blockchain strengthens transparency for future production, it does not solve the challenges of verifying provenance for the overwhelming supply of diamonds already circulating globally.

Why This Matters for Consumers

For buyers and sellers in the secondary market, blockchain is not yet a universal solution. Laboratory expertise remains essential in verifying authenticity, grading, and ensuring consumer protection. At DCLA, as the official CIBJO laboratory for Australia, we recognise the critical role of independent certification. Accurate grading and unbiased reporting remain the foundation of consumer trust particularly for stones not captured by blockchain.

The Future of Diamond Transparency

De Beers’ blockchain initiative is a milestone that may eventually become standard practice across the industry. It addresses many historical weaknesses in tracking systems and aligns with modern consumer demand for ethical sourcing. But for now, blockchain is only part of the answer. The larger challenge remains: how to ensure transparency and trust for the diamonds already in circulation, which make up the majority of the world’s natural supply.

At DCLA, we believe blockchain should be seen as a complementary tool not a replacement for independent laboratory grading and certification. Only by combining robust science with innovative digital systems can the diamond industry achieve true transparency.

The Industry’s “False Sense of Security” – Why Laser Inscriptions Alone Are Not Enough

In the diamond trade, we often speak of a laser inscription as if it is an unbreakable bond between a diamond and its grading certificate. However, anyone with real-world experience whether on the manufacturing floor or in the secondary market knows the truth: inscriptions can be removed, altered, or forged.

Polish the girdle and the inscription disappears. Re-cut the stone and it’s gone entirely. Worse still, an inscription can be duplicated onto a different diamond to mimic an existing report number. This is not speculation; it has happened, and more often than many in the trade care to admit.

Another serious vulnerability occurs after grading. Once a diamond is set into jewellery, nothing prevents a switch from taking place during setting, repair, or even in transit. This risk is not confined to smaller stones high-value diamonds have been switched in exactly this way.

Verification presents its own challenges. Even if the diamond is the original stone graded by the laboratory, the inscription is frequently obscured by the jewellery setting. Accessing it often requires removing the stone a delicate procedure that carries risk to both the stone and the setting. Most grading laboratories, including DCLA, will not remove diamonds from their mountings, and many jewellers are reluctant to attempt it due to the potential for irreversible damage.

Digital records, blockchain entries, and grading reports track the details, but they do not track the actual physical stone. If the diamond is switched but the paperwork remains unchanged, the system still appears to validate it as authentic. This is precisely how sophisticated fraud can go undetected.

Until the industry bridges the gap between the physical diamond and its digital record, laser inscriptions will remain a weak link in the chain of security.

At DCLA, we believe the next step in true physical traceability lies in combining advanced identification technology with secure, tamper-proof verification processes ensuring that a diamond’s identity is as enduring as the stone itself.

South Africa Joins Luanda Accord to Promote Natural Diamonds

South Africa is to sign up to the milestone Luanda Accord, which is funding a global campaign to promote natural diamonds.

It joined the governments of Angola, Botswana, Namibia, Sierra Leone and the Democratic Republic of the Congo, in June in pledging to contribute 1 per cent of the value of their rough sales annually.

But the move was only approved South Africa’s cabinet last week. Minister in the Presidency Khumbudzo Ntshavheni and confirmed the decision on 7 August, committing 1 per cent of the annual revenues generated from rough diamond sales to a global marketing fund led by the Natural Diamond Council (NDC).

South Africa, the world’s sixth biggest diamond producing nation by value, saw sales down by 21 per cent last year amid the global slowdown.

The country’s mining minister mining minister Gwede Mantashe was listed as a signatory to the Luanda Accord in an official communique after the agreement.

But a conflicting Reuters report said South Africa did not actually sign at the time and has only done so now.

The Luanda Accord is seen as a potential turning point for the sector, aiming to rebuild consumer trust and interest in natural diamonds over lab growns, by emphasizing their origin, authenticity, and community impact.

It will highlight the positive economic and social contributions of the natural diamond industry to producing nations and their communities.

Governments of the African diamond producing nations have been joined by the Antwerp World Diamond Centre (AWDC), African Diamond Producers Association, India’s Gem and Jewellery Export Promotion Council (GJEPC) and the Dubai Multi Commodities Centre (DMCC).

Source: IDEX

Petra to Refinance as Sales Slide by a Third

Petra Diamonds has announced plans for a major refinancing program – together with a 33 per cent slide in revenue for FY2025.

The UK-based miner, which has recently sold off two of its four diamond mines, is facing substantial financial and operational challenges.

It is proposing an extension of senior secured bank debt and notes due early next year to 2029 and 2030 respectively, together with a $25m rights issue.

The moves are designed to preserve cash, extend debt repayment timelines, and ensure Petra can continue investing in its two remaining core mines – Cullinan and Finsch, both in South Africa.

Petra’s latest sales results, published on the same day (8 August) as its refinancing package, show some positive momentum in the market with like-for-like rough diamond prices from its latest tender, but revenue for Q4 was down 49 per cent year-on-year to $50m.

Revenue for FY2025 was $206m, down 33 per cent year-on-year from $309m and net debt increased to $264m.

“We would once again like to acknowledge the resilience shown by our employees in navigating a very difficult period for the company and the diamond sector as whole,” the company said in its Q4 and FY 2025 Operating Update.

Meanwhile, in its refinancing proposal Petra said: “Petra has, over the past 18 months, been focused on an internal restructuring that has resulted in a simpler and more streamlined business and operating model.

“This has included the sale of the Koffiefontein and Williamson mines, multiple labour restructuring initiatives and an optimisation and smoothing of the group’s capital development profiles.”

Source: IDEX

Tanishq Offers “First” In-Store Diamond Evaluation

*Tanishq Showroom in Iselin, New Jersey*

Indian jewelry retailer Tanishq is introducing in-store diamond evaluation some of its 500-plus outlets, as part of an ongoing partnership with de Beers.

Customers will be able to see proof that the diamond they’re buying is natural rather than lab grown, thanks to the De Beers SynthDetect machine, which works with loose and mounted stones.

They can also have diamonds tested with Lightscope, which measures light performance, and with other equipment for performance, inclusions, and laser markings.

Tanishq, part of the Titan group, says the launch of its Diamonds Expertise Centres is designed to give customers greater peace of mind by presenting complex gemological data as simple, visual insights. It says the centers are a “first of a kind initiative”.

The first three are in Bengaluru, but the company plans to expand them to 200 stores this year and eventually to all its outlets.

Ajoy Chawla, CEO at Tanishq, said: “Our aim is to set a new standard in natural diamond retail â€” one that goes beyond traditional display and transforms the buying journey into a transparent, educational, and truly immersive experience.”

Last August Tanishq and De Beers jointly announced that they’d be working together to promote natural diamonds in India, now the world’s second biggest diamond market.

The partnership leverages Tanishq’s retail presence and De Beers’ expertise and proprietary diamond verification technology.

Source: IDEX

Double Whammy: Trump Hikes India Tariff to 50%

US President Donald Trump today (6 August) doubled the tariff on all imports from India to 50 per cent, as a punishment for its oil purchases from Russia.

India’s diamond industry, already reeling from confirmation last week of a 25 per cent reciprocal tariff, is in shock that their goods will be subject to a second 25 per cent surcharge.

“I find that the Government of India is currently directly or indirectly importing Russian Federation oil,” Trump said in an executive order.

“Accordingly, and as consistent with applicable law, articles of India imported into the customs territory of the United States shall be subject to an additional ad valorem rate of duty of 25 per cent.”

The first 25 per cent tariff comes into force tomorrow (Thursday 7 August) and the new, punitive tariff is applicable three weeks from now, on 27 August.

The US is the single largest destination for Indian diamonds and gems, accounting for nearly $10bn or about 30 per cent of India’s annual gems and jewelry exports.

Industry leaders were already warning of the dire consequences of a 25 per cent tariff. Now they are facing an unprecedented body blow with the introduction of a 50 per cent double-tariff.

India’s Ministry of External Affairs said in a statement today that the tariffs were “unfair, unjustified and unreasonable”.

It defended its Russian oil purchases, saying they were “based on market factors and done with the overall objective of ensuring the energy security of 1.4 billion people of India”.

The US imposition of an extra tariff was, it said, “extremely unfortunate”.

Source: IDEX

Capacity Boost: Indian Company Buys 1,100 Lab Grown Machines

Greenlab, recognized as India’s largest lab-grown diamond producer, is set for a huge increase in capacity, after buying more than 1,100 new growing machines.

The company already has 1,600 machines, producing 2.9m carats of rough diamonds a year.

It has reportedly bought 105 high-tech growers from the Israeli firm Isrough and 1,000 more from India-based Bhanderi Lab Grown.

It said it chose Isrough’s machines for their ability to produce top-quality diamonds: D and E colors, with much of their output in the VVS clarity range.

Greenlab sells its polished diamonds through its US subsidiary, Labon, and has a distribution partnership with Florida-based Green Rocks.

India is the world’s second-largest lab-grown diamond producer with a 15 per cent market share, but trails a long way behind China, which produces about half of the world’s lab-grown diamonds.

Source: IDEX

US Watch and Jewelry Sales Dip in June Ahead of Tariffs

Watch and jewelry sales in the US slipped into negative growth during June – down 1.7 per cent – after 19 months of almost uninterrupted increases.

The decline, after such a prolonged positive period, reflects growing concern over the impact of US reciprocal tariffs which came into force on 1 August, along with broader economic uncertainty in the market and higher gold prices.

Meanwhile the US Department of Commerce has made significant changes to figures published last month. Sales for May have been revised down from +2.8 per cent to +0.7 per cent, based on actual transactions rather than estimates, and April is down from +2.3 per cent to +1.8 per cent.

The original figures indicated that things were better than they actually were, especially after a number of months when monthly sales increases were hovering just above zero. The June dip appears to signal a downturn ahead of the 1 August implementation of tariffs.

Source: IDEX

Making a Gold Ring in 18K or Platinum: Understanding the Cost and Weight Differences

When choosing a precious metal for a custom-made ring, the two most popular options are 18-carat gold andWhen choosing a precious metal for a custom-made ring, the two most popular options are 18-carat gold and platinum. Both metals are prized for their beauty, durability, and prestige, but they differ significantly in terms of cost, weight, and long-term maintenance. Whether you’re designing a bespoke engagement ring, a wedding band, or a statement piece, understanding the key differences between 18K gold and platinum will help you make an informed decision.

Material Comparison: 18K Gold vs. Platinum

1. Purity and Composition

18K Gold is made up of 75% pure gold and 25% alloy metals (such as copper, silver, or palladium), which influence its colour and strength. It is available in yellow, white, or rose tones.
Platinum is typically 95% pure, making it denser and more hypoallergenic than gold. It retains its naturally white colour over time without the need for rhodium plating.

2. Weight

Platinum is approximately 60% heavier than gold. For example, a ring that weighs 5 grams in 18K gold would weigh about 8 grams if made in platinum. This weight difference gives platinum rings a more substantial feel but also impacts the price.

Cost Breakdown: Gold vs. Platinum Ring

Example: Classic Solitaire Ring Design

Feature	18K Gold (5g)	Platinum (8g)
Metal Cost per Gram	AUD $123-145	AUD $73 -85
Total Metal Cost	AUD $615–725	AUD $584–680
Crafting Charges	AUD $300–500	AUD $400–600
Total Estimated Cost	AUD $915–1125	AUD $984–1280

Note: These figures are approximations and vary based on ring design complexity, jeweller’s rates, and daily bullion prices.

Why Choose 18K Gold?

Affordable luxury: Gold offers the prestige of a precious metal at a more accessible price.
Colour variety: Choose from yellow, white, or rose tones to suit your personal style.
Classic and timeless: 18K is the standard for luxury jewellery, combining durability with rich colour.

Why Choose Platinum?

Exceptional durability: Platinum is more resistant to wear and ideal for heirloom pieces.
Hypoallergenic: A top choice for sensitive skin.
Low-maintenance: Maintains its natural white lustre without plating.

Choosing between 18K gold and platinum comes down to your budget, lifestyle, and personal preferences. If you’re looking for a lighter, more affordable option with colour flexibility, 18K gold is a great choice. If you value longevity, weight, and purity, platinum may be worth the higher investment.

Either way, a well-crafted ring in either metal will provide a lifetime of beauty and meaning. Always consult with a reputable jeweller to discuss your design and get an accurate quote based on current metal prices.

Trump Imposes 25% Tariff, Plus “Penalty” on India Exports

*President Donald Trump and Indian Prime Minister Narendra Modi*

India’s diamond industry today (30 July) had its worst fears confirmed as the US announced all imports would be subject to 25 per cent tariffs, effective as of Friday (1 August).

In addition it will face an unspecified extra penalty for buying military equipment, oil and other goods from Russia.

Lingering hopes of a last-minute deal to avoid the additional tariffs were crushed when President Donald Trump singled out India, the world’s biggest diamond manufacturer, for special mention on his Truth Social platform.

“While India is our friend, we have, over the years, done relatively little business with them because their Tariffs are far too high, among the highest in the World, and they have the most strenuous and obnoxious non-monetary Trade Barriers of any Country,” he wrote.

Kirit Bhansali, chairman of the India’s Gem and Jewelry Export Promotion Council (GJEPC) reacted to the news saying: “This is a deeply concerning development. The Indian gem and jewellery sector, in particular, stands to be severely impacted.

“The United States is our single largest market, accounting for over $10 billion in exports – nearly 30% of our industry’s total global trade.

“A blanket tariff of this magnitude will place immense pressure on every part of the value chain.”

Colin Shah, managing director of diamond jewelry manufacturer Kama Jewelry, reacted to today’s news, said: “With the US being one of the key export destinations, this will severely impact the sectors like gems and jewellery that are heavily dependent on exports.

“Going ahead, we expect trade activities to remain muted with U.S. However, we also need to wait and watch how the situation unfolds.”

Less than two weeks ago, Trump said the US and India were “very close” to reaching an interim agreement, but those talks stalled, primarily over agricultural and dairy goods.

And only days ago US Trade Representative Jamieson Greer told reporters: “We continue to speak with our Indian counterparts. We’ve always had very constructive discussions with them.”

Source: IDEX