• A collection of diamond engagement rings displayed on a white surface, featuring various designs with silver and gold bands. Text on the left reads: "LAB Diamond Engagement Rings.
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  • A couple stands in a city scene at night, with city lights and a tower in the background. The woman wears a backless dress, and the man is in a suit. Text reads "Endless Love, Timeless Sparkle. Discover Our Exquisite Natural & Lab Diamonds.
  • Three diamond engagement rings displayed on a marble surface. One ring has a gold band, while the other two have silver bands. The text "LAB Diamond Engagement Rings" is on the left side of the image.
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Shop By Shape

Choosing a diamond shape at CTJ makes your shopping experience delightful. From timeless round diamonds to elegant emerald cuts, each shape offers unique brilliance and charm. CTJ’s extensive collection ensures you find the perfect match for any style or occasion. Expert guidance helps you understand how different shapes reflect light and complement various settings, making your selection process both enjoyable and informed. Discover your ideal diamond shape with CTJ today.

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Round Diamond

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Oval Diamond

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Pear Diamond

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Radiant Diamond

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Emerald Diamond

Round Diamond

Oval Diamond

Pear Diamond

Radiant Diamond

Emerald Diamond

Featured Products

Browse our featured Diamond Jewellery below.

CTJ’s featured diamonds and diamond jewellery products showcase the pinnacle of craftsmanship and design. Each piece, from exquisite diamond rings to elegant necklaces, embodies timeless beauty and exceptional quality. Hand-selected for their brilliance and uniqueness, these featured items highlight CTJ’s commitment to excellence. Whether you’re looking for a special gift or a stunning addition to your collection, CTJ’s featured products promise to captivate and inspire, making every occasion memorable with a touch of luxury.

A gold ring with an oval-cut diamond centerpiece displayed on a white background.

SHOP LAB DIAMOND ENGAGEMENT RINGS

Three sparkling diamond rings are stacked on a smooth, white surface. The rings feature different diamond cuts: the top has round cuts, the middle has oval cuts, and the bottom has emerald cuts. The background is softly blurred.

SHOP WEDDING & ETERNITY RINGS

A pair of diamond stud earrings with round, clear diamonds set in a silver metal, displayed on a white background.

SHOP LAB DIAMOND STUDS

Close-up of two parallel rows of sparkling rhinestones set on a light fabric, reflecting light with a range of colors.

SHOP LAB DIAMOND TENNIS BRACELETS

Special Offers

See our Special Offers on Diamond Jewellery and find a bargain.

CTJ Diamond & Jewellery offers exclusive special deals on stunning jewellery pieces. Discover discounted luxury rings, necklaces, and bracelets crafted with precision. Shop now for elegant designs and unbeatable prices, perfect for any occasion.

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How Lab Grown Diamonds are made. Close-up of a hand with red-painted nails, showcasing an oval diamond ring being held by tweezers over the ring finger. A jeweler's loupe is placed in the background on a white surface.

HOW LAB GROWN DIAMONDS ARE MADE

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CTJ STORY

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Learn about the 4 C's - A jeweller's loupe labeled "Triplet 10X" and a pair of tweezers lie on a white cloth beside a small, sparkling gemstone. The background appears to be a light-colored, textured surface.

LEARN ABOUT THE 4 C’s

Discover What People Are Saying About CTJ

Our Treasures, Their Words: CTJ Testimonials.