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Learn / Jewelry Guide / Stones & Care

What Is Moissanite — And Why More People Are Choosing It

by Vira Hong 29 Sep 2025 0 comments

What Is Moissanite — And Why More People Are Choosing It

Moissanite Guide

Moissanite is a lab-created gemstone made of silicon carbide (SiC). It delivers dazzling fire, excellent everyday durability, and a larger look for your budget — which is why you’re seeing it everywhere from daily studs to engagement rings.

TL;DR
  • What it is: Silicon carbide (SiC), typically lab-grown for jewelry.
  • Sparkle stats: Refractive index 2.648–2.691; dispersion (fire) 0.104; Mohs hardness ~9.25.
  • Origin story: First identified in 1893 by Dr. Henri Moissan in a meteorite crater in Arizona; jewelry-grade stones are lab-grown.
  • Why people pick it: Bigger visual size per dollar, rainbow-like fire, durable daily wear, and a lab-created supply chain.

1) Definition & Key Properties

Moissanite is silicon carbide (SiC). In fine jewelry, virtually all moissanite is lab-created. Its optical and physical constants explain the “wow” effect under real-life lighting.

Property Moissanite Diamond (for reference)
Refractive Index (RI) 2.648–2.691 2.417–2.419
Dispersion (Fire) 0.104 0.044
Mohs Hardness ~9.25 10
“Moissanite has a higher refractive index and dispersion than diamonds, resulting in greater brilliance and more colorful fire.” Source: jewelry education resources & gemological literature
“Discovered by Dr. Henri Moissan in 1893 in a meteorite crater in Arizona; nearly all jewelry-grade moissanite is lab-created.” Source: gem society & museum references

2) Why More People Are Buying Moissanite

① A bigger, brighter look for your budget

At the same visual size, moissanite often costs a fraction of natural diamond prices, freeing budget for a larger center stone or a premium setting. Its higher dispersion (~0.104) produces that signature rainbow fire in restaurant, sunset, and evening lighting.

② A lab-created supply chain

Jewelry-grade moissanite is grown in controlled labs. For many shoppers, this simplifies provenance and avoids traditional mining steps.

③ Durable daily wear

With hardness around 9.25 on the Mohs scale, moissanite resists scratches in day-to-day life and stays lively with simple home cleaning.

Shop the Looks at Verse & Hue Jewelry

Verse & Hue Jewelry designs everyday-fine pieces that move from coffee to cocktails — plus bridal silhouettes when you’re ready to say yes.

  • Prologue — minimalist essentials (think 6.5 mm moissanite studs, slim bands, clean pendants). Explore Prologue
  • Gala — camera-ready sparkle (S925 moissanite tennis bracelets in 2–6 mm for instant presence). Explore Gala
  • Bridal — engagement and anniversary rings (18K oval-cut solitaires, halos, and custom sizes). Explore Bridal

Tip: For maximum fire in photos, try oval, cushion, or pear cuts at 1 ct+; for subtle everyday sparkle, a 0.5–1 ct round in a simple four- or six-prong setting is perfect. For wrists, 2–3 mm tennis bracelets look clean; 4–5 mm reads bold on camera.

3) Moissanite vs. Diamond — Quick Facts You Can Quote

  • Brilliance & fire: Higher RI and dispersion give moissanite lively white brilliance and prismatic fire.
  • Durability: Diamond is the hardest known gemstone (10), but moissanite (~9.25) is more than tough enough for everyday wear.
  • Value: Moissanite enables larger center stones and design flexibility at a friendlier price point.
  • Origin: Diamonds can be mined or lab-grown; moissanite for jewelry is lab-grown.

4) When to Choose Moissanite

  • You want a larger look and high-impact sparkle within a specific budget.
  • You prefer a lab-created option with streamlined provenance.
  • You need a low-maintenance daily or travel ring and worry less about loss.
  • You love modern cuts and custom sizing without price anxiety.

5) Care & Testing Notes

  • Clean with mild dish soap and a soft brush, or use a household ultrasonic as directed by your jeweler.
  • Avoid harsh chemicals and hard knocks on tiles or metal edges.
  • Some single-function “diamond testers” can misread moissanite; professional labs confirm identity using multiple optical tests.

6) Quick Answers

What is moissanite?

A lab-created gemstone of silicon carbide (SiC) with high brilliance (RI ~2.65–2.69), strong fire (dispersion ~0.104), and everyday-ready durability (Mohs ~9.25).

Why are more people buying it?

Because it offers a bigger look per dollar, colorful fire, durable daily wear, and a lab-created origin — all while matching modern tastes for minimalist, wearable luxury.

References & Further Reading

  1. GIA — Synthetic Moissanite: A New Diamond Substitute (optical constants & historical context). gia.edu
  2. American Gem Society — Moissanite overview and history. americangemsociety.org
  3. Brilliant Earth — Moissanite education (RI/dispersion comparisons). brilliantearth.com
  4. The Knot — Cost comparisons for diamond vs. moissanite (example price ranges). theknot.com
  5. Industry coverage on lab-grown adoption (market acceptance backdrop). axios.com

Figures are representative and vary with cut quality, color/clarity grades, brand, and market conditions.

FAQ

Is moissanite a diamond?

No. Moissanite is silicon carbide (SiC) and is a distinct gemstone. It is not a diamond simulant in the sense of glass or CZ; it has its own optical constants and durability profile.

Is moissanite good for engagement rings?

Yes. With Mohs ~9.25 and high brilliance, moissanite performs well for daily-wear rings. Many couples choose moissanite for a larger look, colorful fire, and flexible budgets.

Sample Image Gallery

Floral-inspired 6-prong sterling silver engagement ring with round lab-created moissanite and pavé stones on the bandBridal Bloom 1.0ct Round Moissanite Sterling Silver Flower Halo Engagement Ring
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