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Giolleria · Premium Moissanite
Minimal, brilliant, and made for everyday wear.
Moissanite is a lab‑created gemstone of silicon carbide (SiC). With a high refractive index and strong dispersion, it delivers vivid sparkle and durability—at a more approachable price than comparable diamond.
The science behind the sparkle
Material
Silicon carbide (SiC), grown in controlled labs for cleanliness and consistency.
Optics
Refractive index ~2.65–2.69 (diamond ~2.42) and dispersion ~0.104 (diamond ~0.044) produce energetic white brilliance and colorful fire.
Durability
Hardness ~9.25 (Mohs) with excellent toughness—well suited for rings and daily‑wear pieces.
Values are typical ranges; actual performance varies with cut and polishing.
Moissanite vs lab diamond vs natural diamond
| Property | Moissanite | Lab diamond | Natural diamond |
|---|---|---|---|
| Brilliance | Very high; lively fire | High; crisp white brilliance | High; crisp white brilliance |
| Hardness (Mohs) | ~9.25 | 10 | 10 |
| Toughness | Excellent for daily wear | Excellent for daily wear | Excellent for daily wear |
| Origin | Lab‑created SiC | Lab‑grown carbon | Earth‑mined carbon |
| Look‑alike tests | Thermal testers may pass; multi‑testers differentiate | Diamond testers confirm | Diamond testers confirm |
| Price | Typically a fraction of comparable diamond | Lower than natural; above moissanite | Highest |
Pricing varies by size, cut, color, and brand. Choose the stone that fits your aesthetic and budget.
Color & clarity, the Giolleria way
We curate moissanites for near‑colorless appearance and eye‑clean clarity in our core range, with custom options on request. Each stone must meet the Brilliance Mark™ checks for symmetry, facet alignment, polish, and lively light return.
- Color: near‑colorless core; warmer tones available by request.
- Clarity: eye‑clean selections for a clean modern look.
- Cut: proportion and symmetry first—sparkle you can see across lighting.
Popular shapes
Minimal silhouettes tuned for clear, modern light performance.
Round
Classic, balanced brilliance with even scintillation.
Oval
Elongating center; great finger coverage.
Pear
Teardrop elegance; flattering and distinctive.
Emerald
Step‑cut clarity; architectural lines.
Cushion
Soft square; modern yet romantic.
Princess / Radiant
Square brilliance; clean corners (princess) or trimmed (radiant).
Settings we recommend
Solitaire · Hidden halo · Pave · Three‑stone · Bezel · Cathedral · East‑West
Size guide: millimeters to diamond‑equivalent look (DEW)
| Round size (mm) | Approx. DEW (carat) | Notes |
|---|---|---|
| 4.0 | ~0.25 | Delicate studs & solitaires |
| 4.5 | ~0.33 | Light daily wear |
| 5.0 | ~0.50 | Classic half‑carat look |
| 5.5 | ~0.66 | Elegant, balanced |
| 6.0 | ~0.80 | Visible sparkle |
| 6.5 | ~1.00 | Iconic one‑carat look |
| 7.0 | ~1.25 | Elongated presence |
| 7.5 | ~1.50 | Statement solitaire |
| 8.0 | ~2.00 | Bold, brilliant |
| 9.0 | ~2.75 | High presence |
| 10.0 | ~3.90 | Showstopper |
DEW expresses the diamond‑equivalent visual size. Actual moissanite carat weight differs due to density and cut. Sizes vary by make and setting style.
Identification & testing
- Thermal testers may read moissanite as diamond. This is normal.
- Multi‑testers (thermal + electrical) distinguish moissanite from diamond.
- Microscopy confirms facet junctions and characteristic doubling in some orientations.
- Each Giolleria stone is inspected and documented per our Brilliance Mark process.
Care for lasting sparkle
- Soak in warm water with a drop of mild dish soap; brush gently; rinse and dry.
- Avoid harsh chemicals and abrasive cleaners; remove during high‑impact activities.
- Schedule periodic professional cleaning and an annual setting check.
Value & buyback
Moissanite buyback
80% buyback on eligible Giolleria moissanites when returned with original invoice and product card.
- Subject to physical inspection and authentication.
- Excludes damage, chips, cracks, or modifications.
- Policy may vary by model and location.
Gold value
100% of net gold value at the day’s applicable rate on Giolleria jewelry.
- Making charges, taxes, and wear & tear are excluded from the gold value.
- Settlement based on net weight and prevailing rate at return time.
Terms apply. Please contact us to confirm eligibility for your piece before visiting.
Frequently asked questions
Is moissanite a fake diamond?
No. Moissanite is a distinct gemstone (silicon carbide) with its own optical personality. It is chosen for value, sparkle, and durability.
Will it cloud or lose sparkle?
Quality moissanite does not cloud. Oils and residue from daily wear can dull the look; cleaning restores brilliance.
Does it pass a diamond tester?
Thermal‑only testers may register moissanite as diamond. Modern multi‑testers (thermal + electrical) differentiate between them.
Can I resize or repair like diamond jewelry?
Yes—our hallmarked gold settings are designed for standard bench work. We recommend using Giolleria or trusted jewelers familiar with moissanite.
Ready to see moissanite shine up close?
© Giolleria. Moissanite grading, sizes and availability may vary. Buyback and gold value policies are subject to inspection and applicable terms.
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