IGI Certified Lab Grown Diamonds

Explore our premium collection of ethically sourced and sustainably grown IGI certified lab grown diamonds. These diamonds deliver exceptional clarity, brilliance and fire, making them ideal for custom jewellery making, engagement rings or accent pieces.

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4.00ct Marquise Lab Grown Diamond - The Carat Club

0.30ct Marquise Lab Grown Diamond

Regular price From £140.00
Sale price From £140.00 Regular price
Unit price
0.30ct Marquise Lab Grown Diamond - IGI Certified IGI certified 0.30ct marquise lab grown diamond,...
4.00ct Marquise Lab Grown Diamond - The Carat Club

0.40ct Marquise Lab Grown Diamond

Regular price From £190.00
Sale price From £190.00 Regular price
Unit price
0.40ct Marquise Lab Grown Diamond - IGI Certified IGI certified 0.40ct marquise lab grown diamond,...
4.00ct Marquise Lab Grown Diamond - The Carat Club

0.50ct Marquise Lab Grown Diamond

Regular price From £200.00
Sale price From £200.00 Regular price
Unit price
0.50ct Marquise Lab Grown Diamond - IGI Certified IGI certified 0.50ct marquise lab grown diamond,...
4.00ct Marquise Lab Grown Diamond - The Carat Club

0.60ct Marquise Lab Grown Diamond

Regular price From £220.00
Sale price From £220.00 Regular price
Unit price
0.60ct Marquise Lab Grown Diamond - IGI Certified IGI certified 0.60ct marquise lab grown diamond,...
4.00ct Marquise Lab Grown Diamond - The Carat Club

0.70ct Marquise Lab Grown Diamond

Regular price From £230.00
Sale price From £230.00 Regular price
Unit price
0.70ct Marquise Lab Grown Diamond - IGI Certified IGI certified 0.70ct marquise lab grown diamond,...
4.00ct Marquise Lab Grown Diamond - The Carat Club

0.80ct Marquise Lab Grown Diamond

Regular price From £250.00
Sale price From £250.00 Regular price
Unit price
0.80ct Marquise Lab Grown Diamond - IGI Certified IGI certified 0.80ct marquise lab grown diamond,...
4.00ct Marquise Lab Grown Diamond - The Carat Club

0.90ct Marquise Lab Grown Diamond

Regular price From £260.00
Sale price From £260.00 Regular price
Unit price
0.90ct Marquise Lab Grown Diamond - IGI Certified IGI certified 0.90ct marquise lab grown diamond,...
4.00ct Marquise Lab Grown Diamond - The Carat Club

1.00ct Marquise Lab Grown Diamond

Regular price From £270.00
Sale price From £270.00 Regular price
Unit price
1.00ct Marquise Lab Grown Diamond - IGI Certified IGI certified 1.00ct marquise lab grown diamond,...
4.00ct Marquise Lab Grown Diamond - The Carat Club

1.10ct Marquise Lab Grown Diamond

Regular price From £280.00
Sale price From £280.00 Regular price
Unit price
1.10ct Marquise Lab Grown Diamond - IGI Certified IGI certified 1.10ct marquise lab grown diamond,...
4.00ct Green Marquise Lab Grown Diamond - The Carat Club

0.50ct Green Marquise Lab Grown Diamond

Regular price £320.00
Sale price £320.00 Regular price
Unit price
0.50ct Green Marquise Lab Grown Diamond - IGI Certified IGI certified 0.50ct fancy vivid green...
4.00ct Marquise Lab Grown Diamond - The Carat Club

1.20ct Marquise Lab Grown Diamond

Regular price From £360.00
Sale price From £360.00 Regular price
Unit price
1.20ct Marquise Lab Grown Diamond - IGI Certified IGI certified 1.20ct marquise lab grown diamond,...
4.00ct Blue Marquise Lab Grown Diamond - The Carat Club

1.00ct Blue Marquise Lab Grown Diamond

Regular price £380.00
Sale price £380.00 Regular price
Unit price
1.00ct Blue Marquise Lab Grown Diamond - IGI Certified IGI certified 1.00ct fancy vivid blue...
4.00ct Marquise Lab Grown Diamond - The Carat Club

1.30ct Marquise Lab Grown Diamond

Regular price From £400.00
Sale price From £400.00 Regular price
Unit price
1.30ct Marquise Lab Grown Diamond - IGI Certified IGI certified 1.30ct marquise lab grown diamond,...
4.00ct Marquise Lab Grown Diamond - The Carat Club

1.40ct Marquise Lab Grown Diamond

Regular price From £500.00
Sale price From £500.00 Regular price
Unit price
1.40ct Marquise Lab Grown Diamond - IGI Certified IGI certified 1.40ct marquise lab grown diamond,...
4.00ct Green Marquise Lab Grown Diamond - The Carat Club

1.00ct Green Marquise Lab Grown Diamond

Regular price £530.00
Sale price £530.00 Regular price
Unit price
1.00ct Green Marquise Lab Grown Diamond - IGI Certified IGI certified 1.00ct fancy vivid green...
4.00ct Marquise Lab Grown Diamond - The Carat Club

1.50ct Marquise Lab Grown Diamond

Regular price From £550.00
Sale price From £550.00 Regular price
Unit price
1.50ct Marquise Lab Grown Diamond - IGI Certified IGI certified 1.50ct marquise lab grown diamond,...
4.00ct Blue Marquise Lab Grown Diamond - The Carat Club

1.50ct Blue Marquise Lab Grown Diamond

Regular price £620.00
Sale price £620.00 Regular price
Unit price
1.50ct Blue Marquise Lab Grown Diamond - IGI Certified IGI certified 1.50ct fancy vivid blue...
4.00ct Pink Marquise Lab Grown Diamond - The Carat Club

1.00ct Pink Marquise Lab Grown Diamond

Regular price £620.00
Sale price £620.00 Regular price
Unit price
1.00ct Pink Marquise Lab Grown Diamond - IGI Certified IGI certified 1.00ct fancy intense pink...
4.00ct Green Marquise Lab Grown Diamond - The Carat Club

1.50ct Green Marquise Lab Grown Diamond

Regular price £635.00
Sale price £635.00 Regular price
Unit price
1.50ct Green Marquise Lab Grown Diamond - IGI Certified IGI certified 1.50ct fancy vivid green...
4.00ct Marquise Lab Grown Diamond - The Carat Club

1.60ct Marquise Lab Grown Diamond

Regular price From £700.00
Sale price From £700.00 Regular price
Unit price
1.60ct Marquise Lab Grown Diamond - IGI Certified IGI certified 1.60ct marquise lab grown diamond,...
4.00ct Blue Marquise Lab Grown Diamond - The Carat Club

2.00ct Blue Marquise Lab Grown Diamond

Regular price £700.00
Sale price £700.00 Regular price
Unit price
2.00ct Blue Marquise Lab Grown Diamond - IGI Certified IGI certified 2.00ct fancy vivid blue...
4.00ct Marquise Lab Grown Diamond - The Carat Club

1.70ct Marquise Lab Grown Diamond

Regular price From £800.00
Sale price From £800.00 Regular price
Unit price
1.70ct Marquise Lab Grown Diamond - IGI Certified IGI certified 1.70ct marquise lab grown diamond,...
4.00ct Blue Marquise Lab Grown Diamond - The Carat Club

2.50ct Blue Marquise Lab Grown Diamond

Regular price £840.00
Sale price £840.00 Regular price
Unit price
2.50ct Blue Marquise Lab Grown Diamond - IGI Certified IGI certified 2.50ct fancy vivid blue...
4.00ct Green Marquise Lab Grown Diamond - The Carat Club

2.00ct Green Marquise Lab Grown Diamond

Regular price £845.00
Sale price £845.00 Regular price
Unit price
2.00ct Green Marquise Lab Grown Diamond - IGI Certified IGI certified 2.00ct fancy vivid green...
4.00ct Marquise Lab Grown Diamond - The Carat Club

1.80ct Marquise Lab Grown Diamond

Regular price From £850.00
Sale price From £850.00 Regular price
Unit price
1.80ct Marquise Lab Grown Diamond - IGI Certified IGI certified 1.80ct marquise lab grown diamond,...
4.00ct Marquise Lab Grown Diamond - The Carat Club

1.90ct Marquise Lab Grown Diamond

Regular price From £900.00
Sale price From £900.00 Regular price
Unit price
1.90ct Marquise Lab Grown Diamond - IGI Certified IGI certified 1.90ct marquise lab grown diamond,...
4.00ct Blue Marquise Lab Grown Diamond - The Carat Club

3.00ct Blue Marquise Lab Grown Diamond

Regular price £960.00
Sale price £960.00 Regular price
Unit price
3.00ct Blue Marquise Lab Grown Diamond - IGI Certified IGI certified 3.00ct fancy vivid blue...
4.00ct Pink Marquise Lab Grown Diamond - The Carat Club

2.00ct Pink Marquise Lab Grown Diamond

Regular price £1,000.00
Sale price £1,000.00 Regular price
Unit price
2.00ct Pink Marquise Lab Grown Diamond - IGI Certified IGI certified 2.00ct fancy intense pink...
4.00ct Marquise Lab Grown Diamond - The Carat Club

2.00ct Marquise Lab Grown Diamond

Regular price From £1,100.00
Sale price From £1,100.00 Regular price
Unit price
2.00ct Marquise Lab Grown Diamond - IGI Certified IGI certified 2.00ct marquise lab grown diamond,...
4.00ct Pink Marquise Lab Grown Diamond - The Carat Club

3.00ct Pink Marquise Lab Grown Diamond

Regular price £1,200.00
Sale price £1,200.00 Regular price
Unit price
3.00ct Pink Marquise Lab Grown Diamond - IGI Certified IGI certified 3.00ct fancy intense pink...
4.00ct Green Marquise Lab Grown Diamond - The Carat Club

2.50ct Green Marquise Lab Grown Diamond

Regular price £1,370.00
Sale price £1,370.00 Regular price
Unit price
2.50ct Green Marquise Lab Grown Diamond - IGI Certified IGI certified 2.50ct fancy vivid green...
4.00ct Pink Marquise Lab Grown Diamond - The Carat Club

4.00ct Pink Marquise Lab Grown Diamond

Regular price £1,560.00
Sale price £1,560.00 Regular price
Unit price
4.00ct Pink Marquise Lab Grown Diamond - IGI Certified IGI certified 4.00ct fancy intense pink...
4.00ct Green Marquise Lab Grown Diamond - The Carat Club

3.00ct Green Marquise Lab Grown Diamond

Regular price £1,580.00
Sale price £1,580.00 Regular price
Unit price
3.00ct Green Marquise Lab Grown Diamond - IGI Certified IGI certified 3.00ct fancy vivid green...
4.00ct Blue Marquise Lab Grown Diamond - The Carat Club

4.00ct Blue Marquise Lab Grown Diamond

Regular price £1,680.00
Sale price £1,680.00 Regular price
Unit price
4.00ct Blue Marquise Lab Grown Diamond - IGI Certified IGI certified 4.00ct fancy vivid blue...
4.00ct Green Marquise Lab Grown Diamond - The Carat Club

3.50ct Green Marquise Lab Grown Diamond

Regular price £1,790.00
Sale price £1,790.00 Regular price
Unit price
3.50ct Green Marquise Lab Grown Diamond - IGI Certified IGI certified 3.50ct fancy vivid green...
4.00ct Green Marquise Lab Grown Diamond - The Carat Club

4.00ct Green Marquise Lab Grown Diamond

Regular price £1,950.00
Sale price £1,950.00 Regular price
Unit price
4.00ct Green Marquise Lab Grown Diamond - IGI Certified IGI certified 4.00ct fancy vivid green...
4.00ct Marquise Lab Grown Diamond - The Carat Club

3.00ct Marquise Lab Grown Diamond

Regular price From £2,550.00
Sale price From £2,550.00 Regular price
Unit price
3.00ct Marquise Lab Grown Diamond - IGI Certified IGI certified 3.00ct marquise lab grown diamond,...
4.00ct Marquise Lab Grown Diamond - The Carat Club

4.00ct Marquise Lab Grown Diamond

Regular price From £2,700.00
Sale price From £2,700.00 Regular price
Unit price
4.00ct Marquise Lab Grown Diamond - IGI Certified IGI certified 4.00ct marquise lab grown diamond,...
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