IGI/GIA Certified Lab-Grown Diamonds

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Produced in 62 West 47th Street in NYC's Diamond District.

Custom Designs built around your budget

Fancy Vivid Blue Lab-Grown Diamonds Tennis Necklace

A river of vivid blue around the neckline. Our fancy blue lab-grown diamond tennis necklaces set a continuous line of four-prong round stones so rare color and light travel from every angle. Choose your diamond size from 3mm to 6.35mm and your length from 16 to 22 inches — every stone a fancy vivid blue lab-grown diamond in VVS-VS clarity. Made to order and shipped fully insured.
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11 products

Fancy Blue 3mm (14.30-19.50 ctw) Round 4-Prong Lab Grown Diamond Tennis Necklace

Necklace

Fancy Blue 3mm (14.30-19.50 ctw) Round 4-Prong Lab Grown Diamond Tennis Necklace

From $10,557
From $10,557 $12,420
Market Average $18,630
14K Yellow Gold 14K White Gold 18K Yellow Gold
Fancy Blue 3.25mm (15.30-21.20 ctw) Round 4-Prong Lab Grown Diamond Tennis Necklace

Necklace

Fancy Blue 3.25mm (15.30-21.20 ctw) Round 4-Prong Lab Grown Diamond Tennis Necklace

From $11,415
From $11,415 $13,430
Market Average $20,145
14K Yellow Gold 14K White Gold 18K Yellow Gold
Fancy Blue 3.5mm (18.00-25.00 ctw) Round 4-Prong Lab Grown Diamond Tennis Necklace

Necklace

Fancy Blue 3.5mm (18.00-25.00 ctw) Round 4-Prong Lab Grown Diamond Tennis Necklace

From $12,856
From $12,856 $15,125
Market Average $22,688
14K Yellow Gold 14K White Gold 18K Yellow Gold
Fancy Blue 3.75mm (20.50-28.50 ctw) Round 4-Prong Lab Grown Diamond Tennis Necklace

Necklace

Fancy Blue 3.75mm (20.50-28.50 ctw) Round 4-Prong Lab Grown Diamond Tennis Necklace

From $14,926
From $14,926 $17,560
Market Average $26,340
14K Yellow Gold 14K White Gold 18K Yellow Gold
Bow Tie Lab Diamonds
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Fancy Blue 4mm (24.00-33.10 ctw) Round 4-Prong Lab Grown Diamond Tennis Necklace

Necklace

Fancy Blue 4mm (24.00-33.10 ctw) Round 4-Prong Lab Grown Diamond Tennis Necklace

From $16,766
From $16,766 $19,725
Market Average $29,588
14K Yellow Gold 14K White Gold 18K Yellow Gold
Fancy Blue 4.25mm (27.60-37.80 ctw) Round 4-Prong Lab Grown Diamond Tennis Necklace

Necklace

Fancy Blue 4.25mm (27.60-37.80 ctw) Round 4-Prong Lab Grown Diamond Tennis Necklace

From $18,581
From $18,581 $21,860
Market Average $32,790
14K Yellow Gold 14K White Gold 18K Yellow Gold
Fancy Blue 4.5mm (37.50-41.00 ctw) Round 4-Prong Lab Grown Diamond Tennis Necklace

Necklace

Fancy Blue 4.5mm (37.50-41.00 ctw) Round 4-Prong Lab Grown Diamond Tennis Necklace

From $25,542
From $25,542 $30,050
Market Average $45,075
14K Yellow Gold 14K White Gold 18K Yellow Gold
Fancy Blue 4.75mm (42.50-47.00 ctw) Round 4-Prong Lab Grown Diamond Tennis Necklace

Necklace

Fancy Blue 4.75mm (42.50-47.00 ctw) Round 4-Prong Lab Grown Diamond Tennis Necklace

From $28,836
From $28,836 $33,925
Market Average $50,888
14K Yellow Gold 14K White Gold 18K Yellow Gold
Fancy Blue 5.2mm (48.50 ctw) Round 4-Prong Lab Grown Diamond Tennis Necklace

Necklace

Fancy Blue 5.2mm (48.50 ctw) Round 4-Prong Lab Grown Diamond Tennis Necklace

$33,371
$33,371 $39,260
Market Average $58,890
14K Yellow Gold 14K White Gold 18K Yellow Gold
Fancy Blue 5.8mm (58.00-63.50 ctw) Round 4-Prong Lab Grown Diamond Tennis Necklace

Necklace

Fancy Blue 5.8mm (58.00-63.50 ctw) Round 4-Prong Lab Grown Diamond Tennis Necklace

From $39,274
From $39,274 $46,205
Market Average $69,308
14K Yellow Gold 14K White Gold 18K Yellow Gold
Fancy Blue 6.35mm (75.00 ctw) Round 4-Prong Lab Grown Diamond Tennis Necklace

Necklace

Fancy Blue 6.35mm (75.00 ctw) Round 4-Prong Lab Grown Diamond Tennis Necklace

$53,282
$53,282 $62,685
Market Average $94,028
14K Yellow Gold 14K White Gold 18K Yellow Gold