T Nagar has always been Chennai’s most trusted jewellery destination. But in 2025, one trend has taken over the entire market: lab grown diamonds. With their eco-friendly process, lower price range, and identical brilliance to natural diamonds, more Chennai shoppers are choosing lab-grown diamonds for engagement rings, wedding sets, and daily-wear jewellery.
If you’re specifically searching for the best lab grown diamond showroom in T Nagar, this guide brings you the top 10 stores, complete with locations, contact numbers, reviews, and what makes each shop special.
Whether you want a budget-friendly stud or a premium solitaire, this list will help you find the best lab grown diamonds in Chennai.
What Makes Lab Grown Diamonds Popular in 2025?
Before we explore the showrooms, let’s understand why there is a massive shift towards lab-grown diamonds:
Eco-Friendly & Ethical
Lab-grown diamonds avoid harmful mining practices. They are sustainably produced using advanced technology.
Cost-Effective
Lab grown diamonds are 40% to 70% cheaper than natural diamonds with the same clarity, cut, and size.
Scientifically Identical to Natural Diamonds
They have the same:
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Carbon structure
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Hardness
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Brilliance
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Shine
They're real diamonds, not substitutes.
More Choices for Custom Designs
If you want a unique engagement ring or designer bridal jewellery, lab grown diamonds give jewellers more freedom to experiment.
Top 10 Lab Grown Diamond Showrooms in T Nagar 2025
Below are the best-rated, most trusted, and most popular lab grown diamond shops in T Nagar, updated for 2025.
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Diahart Diamonds – Best Lab Grown Diamond Jewelry in Chennai
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Balu Jewellers – A Trusted Name with Lab Grown Options
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Prasanthi Jewellery – Excellent Daily-Wear Lab Grown Pieces
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P.R. Jewellery – Trusted for Solitaire Designs
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K P Jewellery & Gems – Known for Quality Craftsmanship
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Prasanthi Jewellery
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Mahendra Jewellers – Traditional Store With Lab Diamond Options
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Vummidi Bangaru Srihari Sons – Renowned Jeweller With Lab Grown Collection
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GRT Silversmith – Trusted Brand With a Modern Touch
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Sri Swathi Jewellery – Simple & Affordable Jewellery in T Nagar
1. Diahart Diamonds – Best Lab Grown Diamond Jewelry in Chennai
If you’re looking for the best lab grown diamonds in Chennai, Diahart Diamonds ranks at the top. Known for high-quality IGI-certified lab-grown diamonds, custom bridal designs, and premium jewellery collections, Diahart has quickly become the most trusted showroom for modern buyers.
Why Diahart Diamonds Is #1
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Known for IGI-certified solitaires
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100% ethical & sustainable diamonds
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Customised engagement & wedding rings
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Premium craftsmanship and finishing
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Modern and elegant showroom experience
What They Offer
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Engagement rings
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Solitaire earrings
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Tennis bracelets
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Pendants
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Bridal lab grown diamond jewellery
Store Details
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Contact: 8014885588
If you want top-quality diamonds with beautiful designs, Diahart Diamonds is the best showroom to visit in T Nagar.
2. Balu Jewellers – A Trusted Name with Lab Grown Options
Balu Jewellers is one of T Nagar’s long-standing jewellery stores. Known for its traditional gold collections, it now offers lab grown diamond rings and earrings at highly affordable prices.
Highlights
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Established and trusted local store
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Budget-friendly lab grown options
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Good customer service
What They Offer
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Studs
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Daily wear lab-grown rings
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Small pendants
Store Details
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Location: 72, N Usman Rd, T. Nagar, Chennai – 600017
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Contact: 07358471185
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Google Review: ⭐ 4.1
If you want simple, value-for-money lab-grown jewellery, this is a great option.
3. Prasanthi Jewellery – Excellent Daily-Wear Lab Grown Pieces
Prasanthi Jewellery has carved a niche in offering lightweight, everyday-use jewellery. Their lab-grown collection focuses on simple and elegant designs.
Why People Love This Shop
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Affordable collections
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Good variety for regular use
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Convenient location
Store Details
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Location: New No. 35, Old 14, Rameswaram St, T. Nagar, Chennai – 600017
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Contact: 09566060664
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Review: ⭐ 3.6
Perfect for those who want simple, elegant, budget-friendly lab grown jewellery.
4. P.R. Jewellery – Trusted for Solitaire Designs
P.R. Jewellery is known for curated solitaire collections at reasonable prices. Their lab-grown diamonds include rings, earrings, and pendants with modern designs.
Highlights
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Attractive solitaire designs
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Good range of lab grown diamonds
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Trusted by many local customers
Store Details
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Location: Shop No. 102/138, N Usman Rd, Postal Colony, T Nagar, Chennai – 600017
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Contact: 09840417360
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Review: ⭐ 3.8
If you want solitaire rings without spending a fortune, this is a good place to visit.
5. K P Jewellery & Gems – Known for Quality Craftsmanship
K P Jewellery & Gems offers detailed craftsmanship and clean finishing in their lab-grown pieces. Their ring designs especially are quite popular.
Why Shop Here
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High attention to finishing
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Value-based pricing
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Good variety in ring sets
Store Details
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Location: 11, BBC Manor, Duraiswamy Rd, T. Nagar, Chennai – 600017
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Contact: 09600117755
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Review: ⭐ 3.9
Great for those who want beautiful handcrafted diamond jewellery.
6. Prasanthi Jewellery
Another branch of Prasanthi Jewellery offers the same affordable, lightweight lab-grown diamond jewellery.
Store Details
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Location: New No. 35, Old 14, Rameswaram St, T. Nagar, Chennai – 600017
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Contact: 09566060664
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Review: ⭐ 3.6
Ideal for regular office wear jewellery.
7. Mahendra Jewellers – Traditional Store With Lab Diamond Options
Mahendra Jewellers is a known name for gold jewellery and has begun offering selected pieces in lab grown diamonds as demand rises.
Why Buy Here
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Good reputation
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Simple lab grown collections
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Ideal for first-time buyers
Store Details
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Location: 59/3, S Usman Road, Parthasarathi Puram, T Nagar, Chennai – 600017
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Contact: 04424346572
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Review: ⭐ 3.7
Perfect for customers who prefer simple and neat lab grown designs.
8. Vummidi Bangaru Srihari Sons – Renowned Jeweller With Lab Grown Collection
This is a well-established jewellery business known for quality craftsmanship. Their lab-grown diamond collection focuses on premium and traditional designs.
Highlights
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Popular among Chennai families
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Good-quality stones
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Traditional diamond designs
Store Details
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Location: Shop No. 11, Nageswaran Rao Rd, T. Nagar, Chennai – 600017
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Contact: 09790794358
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Review: ⭐ 3.9
Ideal for people who want classic diamond designs in lab grown options.
9. GRT Silversmith – Trusted Brand With a Modern Touch
GRT is a known name in the jewellery industry, and their Silversmith outlet includes select lab-grown diamond jewellery.
Why Choose GRT Silversmith
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Trusted Chennai brand
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Quality assurance
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Good for gifting options
Store Details
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Location: No. 134, N Usman Road, T. Nagar, Chennai – 600017
A perfect store for gifting and premium small diamond jewellery.
10. Sri Swathi Jewellery – Simple & Affordable Jewellery in T Nagar
Sri Swathi Jewellery is a reliable store in T Nagar known for its lightweight gold and budget-friendly lab grown diamond jewellery. The shop offers simple, elegant designs suited for daily wear, office wear, and small occasions. Customers appreciate its straightforward pricing and friendly service.
Store Details
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Location: Shop No. 5, Ramanathan St, Postal Colony, T. Nagar, CIT Nagar, Chennai – 600017
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Contact: 044 2434 3511
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Review: ⭐ 3.7
A good choice for shoppers looking for affordable, everyday jewellery with trustworthy service.
How to Choose the Best Lab Grown Diamond Showroom in T Nagar
With so many options, finding the right showroom can be tricky. Here’s what you should consider:
1. Certification
Always look for:
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IGI
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SGL
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GIA (for some stones)
2. Price Transparency
A good showroom provides:
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Cost breakdown
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Stone quality details
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Clarity and color grades
3. Design Variety
Look for showrooms offering:
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Solitaire rings
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Custom designs
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Bridal sets
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Tennis bracelets
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Daily wear studs
4. Customer Support
Good after-sales service matters, especially for resizing or maintenance.
5. Return/Exchange Policies
Reliable shops always have clear policies for lab-grown jewellery.
Final Thoughts Where Should You Buy Lab Grown Diamonds in T Nagar?
While T Nagar is filled with jewellery stores, only a few specialise in premium-quality lab grown diamonds. Based on quality, reviews, design variety, and service, Diahart Diamonds stands out as the best lab grown diamond showroom in T Nagar.
However, stores like Balu Jewellers, K P Jewellery, and Mahendra Jewellers offer good options for those who want economical pieces or everyday jewellery.
Whether you're looking for:
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an engagement ring,
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a wedding set,
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or daily wear diamond studs,
this list ensures that you find the right showroom in T Nagar in 2025.