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Explore our latest collection of natural gems with our personalised astrological gems recommendation.
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Customized Ring
Let's work together to create a unique & meaningful ring for you. You can pick the gem, metal, & design & we'll make it special.
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Glow with Glamour
Explore Astrological Gemstones and Illuminate Your Life's Path.
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New Arrivals

Find Suitable Diamond based on Your Needs

  • R-22 PYR

    R-22

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  • B1

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  • ST-1

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  • LR-8

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Browse through your favorite categories. We’ve got them all!
Shapes of Diamond
princess
Princess
Princess
Rounded
Oval
Radiant

Our Certification

Our diamonds come with certified authenticity, quality, and compliance. Trusted independent gemological labs ensure each diamond meets industry standards, guaranteeing exceptional beauty and value.

Jewellery Guides

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Affiliation And Association
Koustubh Gems is proudly associated with world’s leading institutes and organizations.
FAQs About Diamonds

The 4Cs refer to a diamond’s Cut, Color, Clarity, and Carat Weight, which are universally recognized as the key factors that determine a diamond’s quality and value. Understanding the 4Cs is essential for making an informed decision when purchasing a diamond, as they help you evaluate its beauty, brilliance, and overall quality.

Choosing the right diamond shape is a matter of personal preference and style. Whether you prefer the timeless elegance of a round brilliant cut, the sleek sophistication of a princess cut, or the vintage charm of a cushion cut, our Diamond Collection offers a diverse selection of shapes to suit every taste and occasion. Consider factors such as your personal style, the setting of the jewelry, and the overall aesthetic you wish to achieve when choosing the perfect diamond shape for your jewelry.

Natural diamonds are formed deep within the Earth’s crust over millions of years, while lab-grown diamonds are created in a controlled laboratory environment using advanced technology. While both types of diamonds share the same physical and chemical properties, they differ in their origins and the process by which they are formed. Lab-grown diamonds offer a more sustainable and ethical alternative to natural diamonds, with the same beauty and brilliance at a more affordable price point.

To keep your diamond jewelry looking its best, it’s essential to care for it properly. Avoid exposing your diamonds to harsh chemicals, extreme temperatures, or abrasive materials that can dull or damage the stones. Regular cleaning with a soft brush and mild detergent can help remove dirt and debris and restore the sparkle of your diamonds. Additionally, store your diamond jewelry separately from other pieces to prevent scratching and damage.

Yes, we offer custom design services to help you create a one-of-a-kind piece of diamond jewelry that reflects your unique style and personality. Whether you have a specific design in mind or need inspiration, our experienced designers will work with you to bring your vision to life, from selecting the perfect diamond to crafting a bespoke setting that is as unique as you are.

Diamond certification, also known as diamond grading, is the process of evaluating and documenting a diamond’s quality and characteristics by an independent gemological laboratory. A diamond certificate provides essential information about the diamond’s 4Cs, including its cut, color, clarity, and carat weight, as well as any additional details such as fluorescence or symmetry. Diamond certification is necessary to ensure transparency and trust in the diamond industry, allowing consumers to make informed decisions and accurately assess the value and quality of a diamond.

Yes, we stand behind the quality and craftsmanship of our diamond jewelry and offer a warranty on all our products. Our warranty covers any manufacturing defects or issues with the materials used in the jewelry, providing you with peace of mind and assurance that your investment is protected. Additionally, we offer a satisfaction guarantee, allowing you to return or exchange your diamond jewelry within a specified period if you are not completely satisfied with your purchase. Your satisfaction is our top priority, and we are committed to ensuring that you are delighted with your Koustubh Gems experience.

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