Introduction
India stands at the forefront of a global jewellery revolution, and the new BIS Standard for Diamonds (IS 19469:2025) marks a pivotal shift for the sector. As one of the world’s fastest-growing markets, transparency is now more critical than ever. However, with rapid growth comes a risk: Confusion. As the market floods with both Natural and Lab-Grown stones, how does a consumer in Kerala, Tamil Nadu, Maharashtra, Rajasthan, or Karnataka know exactly what they are buying?
To address this, the Bureau of Indian Standards (BIS) has launched a groundbreaking new rule: IS 19469:2025. In this article, I will break down this new BIS Standard for Diamonds. Specifically, we will look at why terms like “LGD” are now banned, why “Diamond” now means only Natural, and how this protects you.
India’s Booming Market: The Context
First, let us look at the numbers. India has recently overtaken China to become the second-largest diamond jewellery market worldwide, valued at around $10 billion. Therefore, experts predict demand will double by 2030. You can read more about this rivalry in my article on Indian vs Chinese Jewelry.
However, as penetration extends beyond metropolitan areas into smaller cities, transparency becomes increasingly essential. Consumers now demand clear, transparent information to make informed purchasing decisions. Consequently, the government has stepped in to standardize the language used by jewellers.
What is the BIS Standard for Diamonds (IS 19469:2025)?
The Gem & Jewellery Export Promotion Council (GJEPC) has welcomed the new BIS Standard for Diamonds. Technically, this standard adopts a modified version of ISO 18323:2015 (Consumer Confidence in the Diamond Industry). Developed by the BIS MTD 10 Committee, it ensures clarity in diamond nomenclature (naming).
Furthermore, the standard followed GJEPC’s initiative and close collaboration with the Ministry of Consumer Affairs. As a result, India now has comprehensive rules for:
- Natural Diamonds
- Laboratory-Grown Diamonds
- Treated Diamonds
- Imitations (Simulants like CZ)
This milestone promotes ethical trade and eliminates misleading claims.
The “Name Game”: Key Definitions
At its core, IS 19469:2025 changes the vocabulary of the trade.
Rule 1: “Diamond” means Natural
Specifically, under the new law, the single word “Diamond” can only be used for a natural, earth-mined stone. Therefore, if a jeweler sells you a “Diamond Ring,” it must be natural.
Rule 2: Lab-Grown must be spelled out
In fact, Laboratory-grown diamonds require explicit disclosure. Importantly, the standard mandates the use of specific terms:
- “Laboratory-grown diamond”
- “Laboratory-created diamond”
Rule 3: No Abbreviations (The “LGD” Ban)
This is the most critical update for consumers. Previously, jewelers would write “LGD” or “Lab Dia” on the invoice. Many customers did not understand these acronyms. Now, abbreviations like “lab-grown,” “lab-created,” or “LGD” are prohibited. Consequently, the seller must write the full English words. This prevents ambiguity.
For more on the science of these stones, check my guide on the Future of Lab-Grown Diamonds.
Prohibited Terms in the BIS Standard for Diamonds
Additionally, the standard bans outdated or misleading marketing terms. Jewelers can no longer use words like:
- “Fake”
- “Artificial”
- “Synthetic”
- “Real” or “Genuine” (when referring to Lab-Grown)
Why? Because “Synthetic” sounds like plastic (which diamond is not), and “Real” is too vague. The new standard forces scientific accuracy. In essence, it empowers consumers with accurate information, much like how certified gemologists verify stone authenticity. If you want to know how to spot fakes yourself, read my Gemstone Buying Mistakes guide.
Disclosure of Treatments
Moreover, the standard mandates full disclosure of any treatments. For instance, if a diamond has been laser-drilled to remove black spots or fracture-filled to improve clarity, this must be clearly stated. Therefore, jewellers, exporters, and certification labs gain uniform guidelines.
This clarity extends to both domestic sales and international trade. Ultimately, it aligns India with global best practices found in the US and Europe.
Impact of the BIS Standard for Diamonds
This development positions India as a leader in transparent diamond practices. Previously, vague terminology risked consumer confusion amid the rising popularity of CVD Diamond Uses. Now, the standard bridges that gap.
According to Kirit Bhansali, Chairman of GJEPC, “This globally harmonized framework enhances confidence in both natural and laboratory-grown diamonds.” For the consumer, this means you can walk into a shop in Mumbai or Thrissur and get the same standardized invoice.
Conclusion: A Win for the Buyer
In conclusion, the BIS Standard for Diamonds is a game-changer. It forces the industry to be honest. As a buyer, you should now look at your invoice carefully. If you see “LGD” or “Syn Dia,” tell the jeweler they are not compliant with IS 19469:2025. Demand the full description. It is your right.
FAQ: The BIS Standard for Diamonds
What does “diamond” mean under the new BIS standard?
It refers exclusively to natural, earth-mined diamonds. If the stone is man-made, the word “Diamond” cannot be used alone.
Are abbreviations like “LGD” allowed on invoices?
No. The standard strictly prohibits “lab grown,” “LGD,” or similar shortcuts. The full terms “Laboratory-grown diamond” or “Laboratory-created diamond” must be used.
Why introduce the BIS Standard for Diamonds?
To align India with ISO guidelines and boost consumer trust in the booming $10 billion domestic diamond market.
Who developed IS 19469:2025?
It was developed by the BIS MTD 10 Committee, with significant input from the GJEPC and the Ministry of Consumer Affairs.
How does it affect jewellers?
It simplifies compliance but mandates strict labeling. Jewellers must update their billing software and tags to ensure no banned abbreviations are used.
Author Bio
P.J. Joseph, also known as Saju Elizamma, Gemstone & Gold Consultant serving Kerala, Tamil Nadu, and Karnataka.
Credits
This article draws on reporting originally published by Solitaire International.
Credit to Solitaire International for first sharing BIS Standards Align with Global Consumer Protection Guidelines for Diamonds.
This story is adapted from the Solitaire International, India’s leading B2B gem and jewellery magazine of the Gem & Jewellery Export Promotion Council (GJEPC), with additional SEO and contextual research by Saju Elizamma.
