Trusted lighting brand in India since 1958
Wholesale COB LED Downlights for Projects and Dealers
Order wholesale COB LED downlights for false ceilings in flats, offices, hotels and showrooms. Over 50 models from 1W to 50W in warm, natural, cool, 3-in-1 and tunable white, with a GST bill and PAN India delivery.
- Since 1958Kolkata lighting brand
- GST billOn every order
- PAN IndiaDelivery to India
- Talk to an expertCall or WhatsApp us
Quick answer
Looking for a trusted lighting brand in India for bulk orders? Diamond Electrical Industries has sold lighting from Kolkata since 1958 and in LED since 2005. We sell direct to resellers, factories, contractors and designers across India, with a GST bill on every order.
Wholesale price today: 12W LED bulb ₹60, 20W LED bulb ₹125, 12W COB downlight ₹500, 100W LED flood light ₹1,000 per piece + GST. See the full price list.
Our projects
Lighting the names India knows
Civic bodies, parks, townships, resorts and retail showrooms choose Diamond to light their spaces.
-
Civic body
-
Public attraction
-
Public park
-
Amusement park
-
Public infrastructure
-
Civic body
-
Real estate
-
Township
-
Real estate
-
Resort and water park
-
Retail showroom
-
Restaurant chain
“From one Kolkata shop in 1958 to civic bodies, parks and townships today, we light every project as if it were our own.”Diamond Electrical Industries
Enquire now
Talk to a lighting expert
- Tell us your project. Site type, rooms or area, and quantity.
- Get the right lights. We suggest models, wattage and colour.
- Get your price. A written quote on WhatsApp or email.
- Call090388 08043 · 090383 41552
- WhatsAppMessage us now
- Emaildas.30.aneek@gmail.com
- Showroom11A, Esplanade East, above K.C. Das, Kolkata, West Bengal 700069
Shop bulk LED lights by category
Popular wholesale COB LED Downlights
Price list
LED light wholesale price list
Live prices from our store, per piece. Add 18% GST. Ordering in bulk? Send your list on WhatsApp for a better rate.
| Product | Price before GST | Price incl. 18% GST |
|---|---|---|
| 10W LED bulb (B22 / E27)LED BULB | ₹40 | ₹47 |
| 12W LED bulb (B22 / E27)LED BULB | ₹60 | ₹71 |
| 20W LED bulb (B22 / E27)LED BULB | ₹125 | ₹148 |
| 30W LED bulb (B22 / E27)LED BULB | ₹225 | ₹266 |
| 20W LED tube light (2 ft)T8 X-TEND | ₹150 | ₹177 |
| 40W LED tube light (4 ft)T8 X-TEND | ₹280 | ₹330 |
| 12W COB downlight, 3-in-1D020462 | ₹500 | ₹590 |
| 50W LED flood lightOFL-DOB FLOOD LIGHT | ₹600 | ₹708 |
| 100W LED flood lightOFL-DOB FLOOD LIGHT | ₹1,000 | ₹1,180 |
| 50W LED street lightDOB METAL STREET LIGHT | ₹1,000 | ₹1,180 |
| 150W LED high bay lightHELIX BAY LIGHT | ₹4,000 | ₹4,720 |
Prices are pulled live from dewdiamond.com and can change. Every order comes with a GST invoice.
Why buyers choose Diamond
- Low priceBuy direct. No long chain of middlemen.
- High qualityLighting is all we do, since 1958.
- Free replacementDamaged on arrival? We replace it free.
- GST billClaim input tax credit on business orders.
- PAN India deliveryTracked shipping to your site or shop.
- Real peopleOur Kolkata team picks up your call.
Made for trade buyers
Resellers & dealers
Stock fast-moving downlights, strips, bulbs and flood lights at dealer slab rates for your shop.
See our productsFactories & industries
Bay lights, street lights and heavy-duty flood lights for sheds, warehouses, yards and roads.
See industrial lightsInterior designers & architects
COB downlights, profiles, tracks and decorative lights, with samples and project support.
See our projectsBrand comparison
Top LED light brands in India vs Diamond: price comparison
Our prices below include 18% GST, so you compare like for like. Bulk orders get an even better rate.
| Product | Diamond price (incl. GST) | Leading national brand | You save |
|---|---|---|---|
| 12W COB downlight, 3-in-1 colourD020462 | ₹590 | ₹1,250 | ₹660 |
| 100W LED flood lightOFL-DOB FLOOD LIGHT | ₹1,180 | ₹1,950 | ₹770 |
| 150W LED high bay lightHELIX BAY LIGHT | ₹4,720 | ₹19,686 | ₹14,966 |
Brand prices are public online listings of leading national brands with similar wattage, checked in November 2026. They can change, and models differ in specification and warranty.
Top 10 LED light brands in India, and where Diamond fits
Lists of the top LED light brands in India usually include national names such as Philips (Signify), Havells, Wipro, Syska, Bajaj, Crompton, Surya, Halonix, Polycab and Orient. They are strong retail brands with large dealer networks, and their shelf prices carry that cost.
Diamond Electrical Industries is a trusted lighting brand in India since 1958, based in Kolkata. We sell direct, so bulk buyers get similar wattages at the prices in the table above, with a GST bill and free replacement for transit damage.
Luxury and decorative lighting
Beyond everyday LED lights, we also sell decorative chandeliers, wall lights and LED mirror lamps for homes, hotels and showrooms, at direct prices.
Do we deliver to you?
Type your city or 6-digit pincode.
Find a product
Pick a category or type a model or wattage.
Flood lightDownlightStrip lightBulbIndustrial lightsCabinet lightTube lights
See all our products →We deliver PAN India
Bulk LED lights across India
Pick your city for local prices, delivery and lighting tips.
- KolkataWest BengalOur home since 1958
- MumbaiMaharashtraFit-outs and towers
- DelhiDelhi NCRDealers and factories
- NoidaUttar PradeshIndustrial sectors
- BengaluruKarnatakaOffices and tech parks
- ChennaiTamil NaduIndustrial corridor
- HyderabadTelanganaBuilders and offices
- PuneMaharashtraFactories and IT parks
- AhmedabadGujaratIndustry and trade
- SuratGujaratTextile and diamond units
- RajkotGujaratEngineering hub
- JaipurRajasthanShowrooms and hotels
- CoimbatoreTamil NaduMills and pump units
- LucknowUttar PradeshBuilders and dealers
- PatnaBiharClose to Kolkata
- RanchiJharkhandPlants and mines
- BhubaneswarOdishaClose to Kolkata
- GuwahatiAssamGateway to North East
Wholesale COB LED downlights for every ceiling
A COB chip packs many tiny LEDs into one small surface, so the light comes out as one clean beam instead of many dots. That is why wholesale COB LED downlights look neat in a ceiling and give less glare than older panels.
Which wattage of COB downlight to choose
For most rooms, 7W to 12W downlights spaced about 1 to 1.2 metres apart work well. Higher ceilings and lobbies need 12W to 18W. 1W to 3W pencil and spot lights add accent light on art, shelves and puja corners.
Which colour temperature to choose
Warm white (2700K) feels cosy in bedrooms and restaurants. Natural white (4000K) suits living rooms and showrooms. Cool white (6000K) keeps offices and kitchens bright. If the client cannot decide, 3-in-1 downlights switch colour with the wall switch.
COB LED downlights wholesale for dealers
Dealers stock fast-moving 7W and 12W 3-in-1 models, deep anti-glare COBs for showrooms and slim models for low ceilings. We supply matching panel lights and LED profiles so you can sell a complete ceiling package.
All orders are supplied by Diamond Electrical Industries.
Frequently asked questions
Which wattage of COB downlight is best for a room?
For a 10 x 12 feet room with a 9 to 10 feet ceiling, four to six 7W or 9W COB downlights give comfortable light. Bigger halls need 12W to 18W.
Are 3-in-1 COB downlights good for projects?
Yes. Users switch between warm, natural and cool white with the existing switch, so buyers can choose the mood later without changing fittings.
What is the difference between COB and SMD downlights?
A COB downlight uses one compact chip for a clean, focused beam with less glare. An SMD panel spreads many small LEDs for wide, flat light. COB suits feature and accent lighting; SMD panels suit general office lighting.
Where can I buy LED lights in bulk in India?
You can buy bulk LED lights online direct from Diamond Electrical Industries, a trusted lighting brand in India since 1958, with a GST bill and delivery to your city. We also have city pages with local market guides, like the LED light wholesale market in Delhi.
What is the wholesale price of a 12 watt LED bulb?
Our 12W LED bulb (B22 or E27) is ₹60 per piece + GST, about ₹71 including 18% GST. The 20W bulb is ₹125 + GST. Larger quantities get a better rate on request.
Where can I buy the cheapest LED lights?
The lowest sticker price is often an unbranded light with no bill or warranty. For the best value, buy direct with a GST invoice: our 12W LED bulb is ₹60 + GST and our 100W flood light is ₹1,000 + GST, delivered across India.
Will I get a GST bill?
Yes. Every order comes with a proper GST invoice. Share your GST number so your business can claim input tax credit.
Which are the top 10 LED light brands in India?
Well-known LED light brands in India include Philips (Signify), Havells, Wipro, Syska, Bajaj, Crompton, Surya, Halonix, Polycab and Orient. For bulk and project buying, Diamond Electrical Industries, a Kolkata lighting brand trusted since 1958, sells direct at lower prices with a GST bill.