0.5 Carat Lab Grown Diamond Price in India: Latest Guide 2026

If you’re searching for 0.5 carat lab grown diamond price in India, you’re basically looking at one of the most practical diamond sizes right now. In 2026, half-carat diamonds are selling fast because the size is perfect. 

As per current retailer pricing across India, the 0.5 carat diamond cost India depends on the 4Cs. But you can get loose diamonds from ₹9,000 to ₹45,000. Most people spend from ₹20,000 to ₹30,000 when they choose a good cut, nice clarity, and good color grades.

Before you buy lab diamonds online, slow down and check a few things. See whether the diamond has IGI or SGL certification. Read the exact 4Cs written in the report. If it’s already set in a ring or pendant, check the metal price separately. When you look at these basics clearly, you avoid paying extra for nothing. 

What Is a 0.5 Carat Lab Grown Diamond?

Understanding Carat Weight: Carat is weight, not size. One carat means 200 milligrams or 0.2 grams. So 0.5 carat means 100 milligrams or 0.1 grams. That’s it. It does not matter if the diamond is lab-grown or natural; the weight rule does not change. A half-carat is a half-carat. 

Physical Size in Millimeters: In a round shape, 0.5 carat comes around 5.1 to 5.2mm in width. A 1 carat is roughly 6.5mm. And a 0.25 carat is around 4mm. See, weight increases fast. Size increases slowly. That’s why 1 carat does not look double the size of 0.5 carat even though weight is double. 

Visual Comparison with Natural Diamonds: When you see a 0.5 carat lab-grown diamond and a natural one side by side, you will not see a difference. Because sparkle is the same. Shine is the same. Hardness is the same. Both are pure carbon. Both score 10 on Mohs scale.

CVD and HPHT Creation Methods: In India, especially in Surat, most lab-grown diamond jewellery is made using the CVD method. HPHT is also used. Both methods create real diamonds. The only difference is where the diamond grows. One is created inside the earth and one is created inside a controlled lab setup. Everything else that matters to your eye remains the same.

0.5 Carat Lab Grown Diamond Price in India (2026 Updated)

1. Price Breakdown by Quality (Loose Diamonds)

2. Price by Shape (Certified, 0.50 ct, D-E Color)

3. Key Cost Considerations

Finished Jewellery: If you are not buying loose diamonds and instead choosing a 0.5 carat diamond ring, pendant, or earrings, the metal cost comes separately. Gold or platinum setting can add anywhere between ₹15,000 to ₹40,000 depending on weight and design.

Certification: When the diamond is certified by IGI or GIA, the price may be slightly higher. But that extra amount gives you proof of cut, color, clarity, and carat. Without certification, you are just trusting the seller’s words.

Natural vs. Lab-Grown: To compare clearly, a 0.5 carat natural diamond in India can cost ₹50,000 to ₹1,00,000. A lab-grown version costs much less, roughly 70–75% lower for similar quality. That price gap is the main reason many buyers are shifting.

What Affects a 0.5 Carat Lab-Grown Diamond Price?

Cut Quality Impact: Cut controls sparkle. And that is the truth. When the cut is Excellent, light reflects properly, and the diamond shines more. When the cut is just “Good”, the shine drops. In 0.5 carat diamonds, the difference between “Good” and “Excellent” cut can be very different. You must remember this: a well-cut 0.4 carat will shine better than a badly cut 0.6 carat because size cannot fix a poor cut.

Color Grading: Diamonds are graded from D (completely colorless) downwards. For 0.5 carat size, G-H color gives very good balance. They look white once set in gold. And they cost ₹5,000–₹8,000 less than D-F grades. Without side-by-side lab lighting, most people cannot tell the difference between D and G. So, paying extra does not always change what your eye sees.

Clarity Considerations: Clarity talks about tiny marks inside or on the surface. Every diamond has some. VS2 clarity is a strong value choice in 0.5 carat. Marks are not visible to the naked eye, but the price stays controlled. Jumping to VVS adds ₹5,000–₹7,000, but during normal wear, you will not see that difference.

Certification Value: Certified lab-grown diamonds cost slightly more. Maybe ₹2,000–₹3,000 extra. But certification is very important. IGI and SGL are common in India. They confirm the exact cut, color, clarity, and carat. GIA also certifies lab-grown diamonds, but pricing can go 30–50% higher because grading is stricter.

Brand Premium: Premium lab grown diamond brands may charge ₹3,000–₹5,000 more for the same 0.5 carat diamond. That extra money covers service, warranty, and buy-back policies. But if someone is offering ₹10,000 below normal market rate, you should not buy. Because very low pricing means uncertified or incorrectly graded diamonds.

0.5 Carat Lab Grown Diamond Ring Price in India

14K Gold Solitaire Ring with 0.5ct Diamond

If you're looking for a 0.5ct solitaire ring in 14K gold, Lukson has some really lovely options. Like:

• Oval Serenity - Pure Gold Lab Diamond Solitaire Ring (₹34,800)
• Oval Radiance - Pure Gold Lab Diamond Solitaire Ring (₹35,183)
• Elegant Oval - Pure Gold Lab Diamond Solitaire Ring (₹37,419)
• Baroque Grace - Pure Gold Oval Lab Diamond Ring (₹38,635).

18K Gold Settings: 18K gold settings will be a little higher than 14K gold. And for this, you can consult with the Lukson team to customize your order. 

White Gold vs Yellow Gold: White gold normally has a small price difference over yellow gold because of rhodium plating. At Lukson, both options are available across their 14K range.

Hidden Halo Pricing: Hidden halo settings add extra diamonds around the centre stone, so naturally, the price goes up a little compared to a plain solitaire.

Is 0.5 Carat Diamond Big Enough?

Yes, for most people in India, a 0.5 carat is more than enough. On an average ring size (12–14 Indian), the 5mm spread looks neat and noticeable. It does not look tiny, and it does not look oversized either. For office wear, this size is perfect. Because you can wear it daily in your work life.

Many couples also choose 0.5 carat for engagement rings in the ₹40,000–₹60,000 range. Since the 1 carat lab grown diamond price in India goes much higher, half-carat is a good starting point for most people.

Lab Grown vs Natural 0.5 Carat Diamond Price Comparison

In India, a 0.5 carat lab-grown diamond costs far less than a natural one. On average, lab-grown stones in this size sell between ₹9,000 and ₹18,000. A natural diamond with similar cut, color, and clarity starts around ₹40,000 and can go up to ₹1,20,000.

Price Comparison (0.5 Carat Loose Stones – 2026)

What Changes Beyond Price?

The resale value is different. Natural diamonds may recover part of their value in resale. In India, lab-grown diamonds do not have strong resale in the open market. Because visually, both are the same with carbon structure, hardness, and sparkle.

Why Many Indian Buyers Prefer Lukson

In the growing space of lab-grown diamond brands in India, Lukson lab grown diamonds have built trust step by step. Here’s why you should buy from the Lukson store. 

SGL Certified Diamonds: Every diamond comes with SGL certification. The report clearly shows cut, clarity, color, and carat weight. You can see the exact details on paper.

Transparent Pricing Structure: The 0.5 carat lab grown diamond price in India at Lukson is close to real market value. For example, a 0.5 carat VS2, G color, excellent cut diamond can cost you around ₹22,000–₹28,000.

18K Gold BIS Hallmarking: Gold used in Lukson jewellery is BIS hallmarked. That means purity is officially checked. You get proof for both diamond and gold.

Lifetime Buy-Back Program: Lukson offers a lifetime buy-back. If later you want a bigger diamond or a new design, your old purchase gets adjusted.

Affordable Luxury Positioning: Prices start from ₹2,999 for simple pieces. Our 0.5 carat collection is perfect for daily wear and gifting, designed keeping Indian taste in mind. 

Final Verdict 

There, you have it all. In this guide, we have described the price for 0.50 carat lab grown diamond and explained what changes the final cost. We spoke about cut, color, clarity, certification, and even how the gold setting affects the total amount.

You now know that a half-carat stone gives a clean, noticeable look. You also understand why checking IGI or SGL certification and BIS hallmarking is important before buying.

If you compare it with 1 carat lab grown diamond price in India or 2 carat lab grown diamond price in India, you will see why many people prefer this size. The growing lab diamonds India market gives you so many options. But a smart choice is simply about knowing what to check before you buy. 

Having said that, if you want to buy lab-grown diamond jewellery, Lukson is one of the best brands in India. You can see all our collections for different occasions and budgets.