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Loose Chatham Gemstones
Chatham-Created Gems
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Loose Natural Gemstones & Diamonds
Chatham Alexandrites: Top Color Lab Grown Alexandrites

loose aquamarine simulants / loose blue sapphires / loose emeralds / loose padparadschas / loose pink sapphires / loose rubies / loose seafoam garnets / loose white sapphires / loose yellow sapphires / loose diamonds

SAVE On Gem Quality Chatham Alexandrites

Chatham Alexandrite Exceptional Color Change

Alexandrites exhibit the unique phenomenon known as Color Change. Under indoor lighting alexandrites can be a redish-purple while outdoors they can turn a beautiful teal green. Top quality natural alexandrites with excellent color change are rare and valuable.

Chatham cultured alexandrites exhibit excellent color change because they are grown in a controlled environment. They are not fakes, rather they are REAL alexandrites grown in a laboratory.

Get Personalized Service With One Of Our Staff GIA-Trained Graduate Gemologists
We want you to enjoy selecting the perfect Chatham lab-grown alexandrite. So we offer you the one-on-one attention you deserve to select the perfect Chatham-created alexandrite at an exceptional price. Our top-color Chatham lab created synthetic alexandrites are available in a variety of sizes and shapes including round, oval, trillion, marquise, pear, princess cut alexandrites, emerald cut and more. If you don't see the alexandrite you're looking for below, simply call us and we'll assist you, 970-535-4139.


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10x5mm Marquise Gem Quality Chatham Lab-Created Color-Change Alexandrite 1.10-1.34 Ct. (SKU: CH-LGQ10x5MQAL)
10x7mm Pear Shaped Gem Quality Chatham Lab-Created Lab-Created Alexandrite 2.19-2.67 Ct. (SKU: CH-LGQ10x7PSAL)
10x8mm Antique Cushion Cut Gem Quality Chatham Lab-Created Color-Change Alexandrite 3.76-4.60 Ct. (SKU: CH-LGQ10x8ACAL)
10x8mm Octagon Emerald Cut Gem Quality Chatham Lab-Created Color-Change Alexandrite 3.76-4.60 Ct. (SKU: CH-LGQ10x8OCAL)
10x8mm Oval Gem Quality Chatham Lab-Created Color-Change Alexandrite 2.93-3.59 Ct. (SKU: CH-LGQ10x8OVAL)
11x9mm Antique Cushion Cut Gem Quality Chatham Lab-Created Color-Change Alexandrite 5.15-6.30 Ct. (SKU: CH-LGQ11x9ACAL)
11x9mm Octagon Emerald Cut Gem Quality Chatham Lab-Created Color-Change Alexandrite 5.60-6.40 Ct. (SKU: CH-LGQ11x9OCAL)
11x9mm Oval Gem Quality Chatham Lab-Created Color-Change Alexandrite 4.41-4.99 Ct. (SKU: CH-LGQ11x9OVAL)
11x9mm Pear Shaped Gem Quality Chatham Lab-Created Lab-Created Alexandrite 3.76-4.60 Ct. (SKU: CH-LGQ11x9PSAL)
12x10mm Antique Cushion Cut Gem Quality Chatham Lab-Created Color-Change Alexandrite 6.94-8.20 Ct. (SKU: CH-LGQ12x10ACAL)
12x10mm Octagon Emerald Cut Gem Quality Chatham Lab-Created Color-Change Alexandrite 7.00-8.00 Ct. (SKU: CH-LGQ12x10OCAL)
12x10mm Oval Gem Quality Chatham Lab-Created Color-Change Alexandrite 5.53-6.75 Ct. (SKU: CH-LGQ12x10OVAL)
12x6mm Marquise Gem Quality Chatham Lab-Created Color-Change Alexandrite 1.71-2.09 Ct. (SKU: CH-LGQ12x6MQAL)
3.0mm Round Gem Quality Chatham Lab-Created Color-Change Alexandrite .13-.15 Ct. (SKU: CH-LGQ300RDAL)
3.5mm Round Gem Quality Chatham Lab-Created Color-Change Alexandrite .17-.21 Ct. (SKU: CH-LGQ350RDAL)
3x3mm Heart Shaped Gem Quality Chatham Lab-Created Color-Change Alexandrite .13-.15 Ct. (SKU: CH-LGQ3x3HSAL)
3x3mm Princess Cut Gem Quality Chatham Lab-Created Color-Change Alexandrite .15-.19 Ct. (SKU: CH-LGQ3x3PRAL)
4.0mm Round Gem Quality Chatham Lab-Created Color-Change Alexandrite .30-.36 Ct. (SKU: CH-LGQ400RDAL)
4.5mm Round Gem Quality Chatham Lab-Created Color-Change Alexandrite .39-.47 Ct. (SKU: CH-LGQ450RDAL)
4x4mm Heart Shaped Gem Quality Chatham Lab-Created Color-Change Alexandrite .28-.34 Ct. (SKU: CH-LGQ4x4HSAL)
4x4mm Princess Cut Gem Quality Chatham Lab-Created Color-Change Alexandrite .35-.43 Ct. (SKU: CH-LGQ4x4PRAL)
4x4mm Square Cushion Cut Gem Quality Chatham Lab-Created Color-Change Alexandrite .35-.43 Ct. (SKU: CH-LGQ4x4SCAL)
4x4mm Trillion Gem Quality Chatham Lab-Created Color-Change Alexandrite .26-.32 Ct. (SKU: CH-LGQ4x4TRAL)
5.0mm Round Gem Quality Chatham Lab-Created Color-Change Alexandrite .53-.65 Ct. (SKU: CH-LGQ500RDAL)
5.5mm Round Gem Quality Chatham Lab-Created Color-Change Alexandrite .68-.83 Ct. (SKU: CH-LGQ550RDAL)
5.5x5.5mm Princess Cut Gem Quality Chatham Lab-Created Color-Change Alexandrite .90-1.08 Ct. (SKU: CH-LGQ55x55PRAL)
5x2mm Baguette Gem Quality Chatham Lab-Created Color-Change Alexandrite .14-.20 Ct. (SKU: CH-LGQ5x2BGAL)
5x3mm Baguette Gem Quality Chatham Lab-Created Color-Change Alexandrite .32-.38 Ct. (SKU: CH-LGQ5x3BGAL)
5x3mm Marquise Gem Quality Chatham Lab-Created Color-Change Alexandrite .20-.24 Ct. (SKU: CH-LGQ5x3MQAL)
5x3mm Octagon Emerald Cut Gem Quality Chatham Lab-Created Color-Change Alexandrite .30-.36 Ct. (SKU: CH-LGQ5x3OCAL)
5x3mm Oval Gem Quality Chatham Lab-Created Color-Change Alexandrite .26-.32 Ct. (SKU: CH-LGQ5x3OVAL)
5x3mm Pear Shaped Gem Quality Chatham Lab-Created Lab-Created Alexandrite .23-.28 Ct. (SKU: CH-LGQ5x3PSAL)
5x5mm Heart Shaped Gem Quality Chatham Lab-Created Color-Change Alexandrite .51-.63 Ct. (SKU: CH-LGQ5x5HSAL)
5x5mm Princess Cut Gem Quality Chatham Lab-Created Color-Change Alexandrite .72-.88 Ct. (SKU: CH-LGQ5x5PRAL)
5x5mm Square Cushion Cut Gem Quality Chatham Lab-Created Color-Change Alexandrite .72-.90 Ct. (SKU: CH-LGQ5x5SCAL)
5x5mm Trillion Gem Quality Chatham Lab-Created Color-Change Alexandrite .50-.61 Ct. (SKU: CH-LGQ5x5TRAL)
6.0mm Round Gem Quality Chatham Lab-Created Color-Change Alexandrite 1.02-1.20 Ct. (SKU: CH-LGQ600RDAL)
6.5mm Round Gem Quality Chatham Lab-Created Color-Change Alexandrite 1.25-1.49 Ct. (SKU: CH-LGQ650RDAL)
6x3mm Marquise Gem Quality Chatham Lab-Created Color-Change Alexandrite .24-.30 Ct. (SKU: CH-LGQ6x3MQAL)
6x4mm Antique Cushion Cut Gem Quality Chatham Lab-Created Color-Change Alexandrite .57-.67 Ct. (SKU: CH-LGQ6x4ACAL)
6x4mm Octagon Emerald Cut Gem Quality Chatham Lab-Created Color-Change Alexandrite .59-.72 Ct. (SKU: CH-LGQ6x4OCAL)
6x4mm Oval Gem Quality Chatham Lab-Created Color-Change Alexandrite .49-.59 Ct. (SKU: CH-LGQ6x4OVAL)
6x4mm Pear Shaped Gem Quality Chatham Lab-Created Lab-Created Alexandrite .48-.58 Ct. (SKU: CH-LGQ6x4PSAL)
6x6mm Heart Shaped Gem Quality Chatham Lab-Created Color-Change Alexandrite .81-.99 Ct. (SKU: CH-LGQ6x6HSAL)
6x6mm Princess Cut Gem Quality Chatham Lab-Created Color Change Alexandrite 1.24-1.52 Ct. (SKU: CH-LGQ6x6PRAL)
6x6mm Square Cushion Cut Gem Quality Chatham Lab-Created Color Change Alexandrite 1.24-1.52 Ct. (SKU: CH-LGQ6x6SCAL)
6x6mm Trillion Gem Quality Chatham Lab-Created Color-Change Alexandrite .78-.96 Ct. (SKU: CH-LGQ6x6TRAL)
7.0mm Round Gem Quality Chatham Lab-Created Color-Change Alexandrite 1.47-1.79 Ct. (SKU: CH-LGQ700RDAL)
7.5mm Round Gem Quality Chatham Lab-Created Color-Change Alexandrite 1.80-2.20 Ct. (SKU: CH-LGQ750RDAL)
7x3.5mm Marquise Gem Quality Chatham Lab-Created Color-Change Alexandrite .36-.44 Ct. (SKU: CH-LGQ7x35MQAL)
7x5mm Antique Cushion Cut Gem Quality Chatham Lab-Created Color-Change Alexandrite 1.02-1.22 Ct. (SKU: CH-LGQ7x5ACAL)
7x5mm Octagon Emerald Cut Gem Quality Chatham Lab-Created Color-Change Alexandrite 1.08-1.32 Ct. (SKU: CH-LGQ7x5OCAL)
7x5mm Oval Gem Quality Chatham Lab-Created Color-Change Alexandrite .90-1.10 Ct. (SKU: CH-LGQ7x5OVAL)
7x5mm Pear Shaped Gem Quality Chatham Lab-Created Lab-Created Alexandrite .78-.96 Ct. (SKU: CH-LGQ7x5PSAL)
7x7mm Heart Shaped Gem Quality Chatham Lab-Created Color-Change Alexandrite 1.37-1.67 Ct. (SKU: CH-LGQ7x7HSAL)
7x7mm Princess Cut Gem Quality Chatham Lab-Created Color Change Alexandrite 1.83-2.23 Ct. (SKU: CH-LGQ7x7PRAL)
7x7mm Square Cushion Cut Gem Quality Chatham Lab-Created Color Change Alexandrite 1.98-2.44 Ct. (SKU: CH-LGQ7x7SCAL)
7x7mm Trillion Gem Quality Chatham Lab-Created Color-Change Alexandrite 1.29-1.57 Ct. (SKU: CH-LGQ7x7TRAL)
8.0mm Round Gem Quality Chatham Lab-Created Color-Change Alexandrite 2.15-2.65 Ct. (SKU: CH-LGQ800RDAL)
8.5mm Round Gem Quality Chatham Lab-Created Color-Change Alexandrite 2.90-3.15 Ct. (SKU: CH-LGQ850RDAL)
8x4mm Marquise Gem Quality Chatham Lab-Created Color-Change Alexandrite .59-.73 Ct. (SKU: CH-LGQ8x4MQAL)
8x5mm Pear Shaped Gem Quality Chatham Lab-Created Lab-Created Alexandrite .92-1.12 Ct. (SKU: CH-LGQ8x5PSAL)
8x6mm Antique Cushion Cut Gem Quality Chatham Lab-Created Color-Change Alexandrite 1.67-2.05 Ct. (SKU: CH-LGQ8x6ACAL)
8x6mm Octagon Emerald Cut Gem Quality Chatham Lab-Created Color-Change Alexandrite 1.67-2.05 Ct. (SKU: CH-LGQ8x6OCAL)
8x6mm Oval Gem Quality Chatham Lab-Created Color-Change Alexandrite 1.35-1.65 Ct. (SKU: CH-LGQ8x6OVAL)
8x8mm Heart Shaped Gem Quality Chatham Lab-Created Color-Change Alexandrite 2.12-2.60 Ct. (SKU: CH-LGQ8x8HSAL)
8x8mm Princess Cut Gem Quality Chatham Lab-Created Color Change Alexandrite 2.79-3.41 Ct. (SKU: CH-LGQ8x8PRAL)
8x8mm Square Cushion Cut Gem Quality Chatham Lab-Created Color Change Alexandrite 2.96-3.61 Ct. (SKU: CH-LGQ8x8SCAL)
8x8mm Trillion Gem Quality Chatham Lab-Created Color-Change Alexandrite 1.70-2.08 Ct. (SKU: CH-LGQ8x8TRAL)
9.0mm Round Gem Quality Chatham Lab-Created Color-Change Alexandrite 3.73-4.13 Ct. (SKU: CH-LGQ900RDAL)
9x4.5mm Marquise Gem Quality Chatham Lab-Created Color-Change Alexandrite .86-1.05 Ct. (SKU: CH-LGQ9x45MQAL)
9x6mm Pear Shaped Gem Quality Chatham Lab-Created Lab-Created Alexandrite 1.46-1.78 Ct. (SKU: CH-LGQ9x6PSAL)
9x7mm Antique Cushion Cut Gem Quality Chatham Lab-Created Color-Change Alexandrite 2.57-3.15 Ct. (SKU: CH-LGQ9x7ACAL)
9x7mm Octagon Emerald Cut Gem Quality Chatham Lab-Created Color-Change Alexandrite 2.57-3.15 Ct. (SKU: CH-LGQ9x7OCAL)
9x7mm Oval Gem Quality Chatham Lab-Created Color-Change Alexandrite 1.98-2.42 Ct. (SKU: CH-LGQ9x7OVAL)
9x9mm Heart Shaped Gem Quality Chatham Lab-Created Color-Change Alexandrite 3.08-3.76 Ct. (SKU: CH-LGQ9x9HSAL)
9x9mm Princess Cut Gem Quality Chatham Lab-Created Color Change Alexandrite 4.19-4.99 Ct. (SKU: CH-LGQ9x9PRAL)
9x9mm Square Cushion Cut Gem Quality Chatham Lab-Created Color Change Alexandrite 4.19-4.99 Ct. (SKU: CH-LGQ9x9SCAL)
9x9mm Trillion Gem Quality Chatham Lab-Created Color-Change Alexandrite 2.70-3.30 Ct. (SKU: CH-LGQ9x9TRAL)


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