Scintillating Lagoon Blue Topaz and Diamonds Necklace is gorgeous. 

Handmade in 18K white gold featuring an oval-shaped brilliant-cut blue topaz surrounded by VS clarity D-F colorless ideal cut round brilliant diamonds. The combined scintillation when these gemstones catch the light is mesmerizing. 

Features:

• 18 karat white gold
• 34.34 carats blue topaz 
• One hundred and forty-three round brilliants diamonds of VS clarity, D-F colorless diamonds weighing 1.81 carats
• Lenth of 18 karat white gold link chain: 16" 
• High polish finish
• Handmade