Moissanite Jewelry Guide: Stones, Sizes & Finishes

A little information makes choosing jewelry easier. Use this guide to compare moissanite stones, understand finishes and find proportions that suit your style.

What is moissanite?

Moissanite is a gemstone made of silicon carbide. The moissanite used in modern jewelry is laboratory-grown. It has its own optical properties and is known for bright, rainbow-like flashes. It is not a diamond, including a laboratory-grown diamond.

Choose the size you want to wear

Check the stone measurements in millimeters as well as any carat description. Millimeters describe the physical size you see; carats measure weight. Check whether an advertised weight refers to one stone, a pair of earrings or all the stones in a piece.

  • Stud earrings: compare the stone diameter with a pair you already own. Smaller stones give a subtle accent; larger stones create a more noticeable look.
  • Necklaces: measure a favorite chain laid flat, including the clasp. Check both the base chain length and any extension.
  • Rings: use the sizing system stated on the product page. A local jeweler can measure your finger if you are unsure. Do not assume the same number means the same size in every country.

Understand the metal and finish

Sterling silver contains 92.5% silver. Gold plating is a surface finish over another metal; it does not mean a piece is solid gold. Silver posts describe the posts of an earring and do not by themselves identify the metal used in the rest of the earring.

Read the material details for the specific piece and variant. Finish, dimensions and construction can vary between products.

Before you order

  • Double-check the selected size, finish and quantity.
  • Check the current shipping information and delivery destination before choosing a gift for a specific date.
  • Read the return policy before buying.

Need help comparing a size or finish? Contact JUSMIR with the product name and your question.

Gemstone background: Gemological Institute of America: An Introduction to Imitation Diamonds & Other Gems.