🎀 COSMOS KIDS
Tiny Treasures, Endless Joy
Designed for tiny dreams.
BORN BEYOND EARTH
Cosmic Bloom Collection
A celestial bloom, shaped by the wonder of space.
What Makes a Diamond Lab Grown?
Grown from the same carbon, under the same heat and pressure, just without the million-year wait. Chemically and optically identical to mined diamonds, IGI-certified so you don't have to take our word for it.
Our Story
Crafted by Innovation. Guided by Purpose.
Cosmos began with a problem. Diamond pricing and sourcing were not clear, so we created lab-grown diamond jewellery with nothing hidden in the fine print.
CERTIFIED & FEATURED
Trusted names behind every piece
Real Diamonds, Real Reviews
Loved by 10,000+ Women and Counting
From first-time buyers to repeat customers, women across India trust Cosmos for lab-grown diamond jewellery that's certified, honestly priced and made to last.
The Way to Your Perfect Piece
From our workshop to your doorstep. Simple, secure and stress-free.
Find a Storenear you
Visit us to explore the collection, get personalised styling and try on your favourites. Find your nearest Cosmos store today.
AJ Forte, 2343, 17th Cross Rd, near Gayatri Temple, Vanganahalli, 1st Sector, HSR Layout, Bengaluru, Karnataka 560102
Ground Floor, Lakshmi Ram Plaza, Museum Rd, beside DBS Bank, Governor Peta, Vijayawada, Andhra Pradesh 520002
Explore Our Blogs
Everything about lab-grown diamonds.
Lab-Grown Diamonds vs Natural Diamonds: Which One Should You Choose?
Lab-grown diamonds have moved from a niche curiosity to a mainstream choice in just the past decade, and the comparison to natural diamonds comes up in almost every buying decision now. Here's wha...
Types of Lab Grown Diamonds: CVD vs HPHT Explained
Not every lab grown diamond is made the same way. Two different processes, CVD and HPHT, both produce genuine diamonds with the same chemical, physical and optical properties as a mined stone. The ...
How Lab Grown Diamonds Are Made
Every lab grown diamond starts life the same way a natural one does: as pure carbon. The difference is where that carbon crystallises. Instead of forming under the earth's crust over a billion year...
Lab Grown Diamond Jewellery for Special Moments
Most women shopping for diamond jewellery in India end up settling: gold that's plated instead of real, or a diamond smaller than she wanted, because mined pricing forced the trade-off. Others just keep waiting for a "someday" piece that never quite arrives.
Cosmos exists because that compromise shouldn't be the default. Every piece is lab grown diamond jewellery set in BIS hallmarked gold, with each stone IGI certified before it's set, so nothing about it is a smaller, cheaper version of the real thing. Buy a piece and you get lifetime exchange, a 100% buyback promise, a 7-day trial at home, and free insured delivery.
Why Choose Lab-Grown Diamonds
A lab grown diamond forms through the same carbon process as a mined one, compressed from billions of years into a few weeks inside a controlled chamber. What comes out is chemically, optically and physically identical to a diamond pulled from the ground, graded on the same 4Cs and backed by the same IGI paperwork a jeweller or insurer would ask for. That's why lab grown diamonds hold their resale value the way people assume only mined stones can. More buyers across India are comparing lab-grown against mined diamonds before they even walk into a store.
The gap shows up mostly in price. Skip the mining, the decades-long supply chain, and the markup that comes with it, and a lab grown diamond price typically lands 40% to 60% below an equivalent mined stone.
Cosmos Collection of Lab-Grown Diamond Jewellery
Cosmos covers the pieces a woman reaches for on an ordinary day, styled to be worn often rather than saved for a photograph. Every category is built on the same "5th C", a quality standard Cosmos holds itself to beyond the usual cut, colour, clarity and carat.
- Engagement Rings & Solitaires for brides comparing lab-grown diamonds with mined diamonds for a piece they can wear every day
- Tennis Bracelets & Mangalsutra for everyday and traditional wear, designed for comfort beyond special occasions
- Gifts Under ₹35,000 for first-time buyers comparing prices before their first purchase, or thoughtful gifts for everyday celebrations
- Cosmos also brings the same standard to men, with rings, bracelets and chains crafted in lab-grown diamonds and BIS-hallmarked gold
Why Cosmos, Not Just Any Lab-Grown Brand
Plenty of brands sell lab-grown diamonds in India now. Fewer sell real gold alongside them, fewer still let you try a piece at home before deciding, and none of them have sent a diamond to space.
Real Gold, Not Gold-Plated
Every setting is BIS hallmarked, not a lab-grown diamond price shortcut that cuts corners on the metal.
Buyback and Trial, Together
Most brands offer one or the other. Cosmos backs every purchase with both, at full value, so a lower lab grown diamonds price never comes with a smaller safety net.
Founder-Led Design
Built by a NID-trained designer who researched close to 1,000 women before opening the first store, with design leading the business from day one.
Two Stores You Can Walk Into
Bengaluru and Vijayawada, for buyers who would rather see a lab-grown diamond jewellery piece in hand and compare it in person than trust a listing online.
Your Diamond That's Been to Space
A piece of Cosmos jewellery flew to space. Cosmic Bloom, a 16.16 ct diamond lotus set in 18K gold, rode as a payload on Skyroot Aerospace's Vikram-I, one of India's premier private launch vehicles. That comes from how Cosmos was built: founder Sanjana Tripuramallu left a design role at Samsung R&D to start the brand in 2021, sourcing rough diamonds from Surat and growing them through CVD, the same slow, deliberate process the brand applies to everything it makes. She funded the first store by selling her own wedding jewellery. Cosmic Bloom is what that kind of conviction looks like when it's had five years to grow.
Visit, Ask, Try Before You Buy
Cosmos has stores in Bengaluru and Vijayawada, and a WhatsApp styling line and video call shopping for anyone who isn't near either one. Walk in and try a piece, or book a free store visit at either location.
If you'd rather start from home, request a piece and get a 7-day window to wear it before deciding. Start your 7-day trial and send it back if it's not the one. The brand has been covered by Inc42, The Times of India, BBC, NDTV and The Hindu, coverage earned for lab grown diamonds india buyers by what Cosmos has built, not a marketing push.
your personal jewel consultant
