Lika Behar created this 24-karat gold and oxidized silver bar necklace with 0.23 carats of diamonds. It retails for $880.LikaBehar.com

This 24-karat gold and oxidized sterling “smile” necklace, also by Lika Behar, has 0.25 carats of diamonds. It retails for $990.
LikaBehar.com

Phyne by Paige Novick offers this “Sasha” small flat bar necklace in white, rose or yellow 14-karat gold with white diamonds. It retails for $1,200.
PaigeNovick.com

Kismet by Milka’s “Smile” necklace of little bars in 14-karat gold with black diamonds offers a slight variation on the theme. It retails for $1,280.
KismetByMilka.com

Lika Behar created this 24-karat gold and oxidized silver bar necklace with 0.23 carats of diamonds. It retails for $880.
LikaBehar.com

Megan Thorne gives the bar a sweet interpretation with her "Buttercup 5" flower bar necklace in 18-karat yellow gold with diamonds ($935).
MeganThorne.com

Sorellina’s “Otto Doppia” bar necklace boasts 0.29 total carats of diamonds set in blackened silver on an 18-karat yellow gold chain. It retails for $1,500.
SorellinaNewYork.com

Designer Zoe Chicco has been doing the bar necklace for a decade now, offering choices like this 14-karat white gold curved bar necklace with half black and half white pave diamonds (0.4 carats total weight). It retails for $2,100.
ZoeChicco.com

Mizuki’s 14-karat yellow gold and diamond “smile” necklace offers a delicate turn on the trend. This retails for $2,260.
MizukiJewelry.com

This horizontal baguette diamond bar necklace by Sethi Couture is set in 18-karat rose gold. It retails for $2,675.
SethiCouture.com

Jacquie Aiche offers a full smile of bling with diamonds in a 14-karat curved gold necklace. It retails for $3,940.
JacquieAiche.com

Sorellina also has this “Victoria Sorriso” necklace featuring 0.78 carats of diamonds set in blackened silver on an 18-karat yellow gold snake “smile.” It retails for $4,500.
SorellinaNewYork.com

Melissa Kaye's blackened gold bar necklaces with white and black diamonds in a horizontal setting retail for $8,800.
MelissaKayeJewelry.com

Melissa Kaye also created these white and black diamond bars in 18-karat blackened gold. They retail for $9,240.
MelissaKayeJewelry.com