Lab-Grown Moissanite 0.70 Carat (0.77 Ratti) 6.00 mm Round Brilliant Cut (D Colour, VVS1)
SKU: GRA1111307615
Gemstone & Physical Specifications
Verified gemological characteristics and certified measurements.
Detailed Product Description
Lab-Grown Moissanite – 0.70 Carat (0.77 Ratti) Round Brilliant Cut
This Laboratory-Grown Moissanite gemstone weighs exactly 0.70 Carats (0.77 Ratti) with a calibrated diameter of 6.00 mm. Expertly precision-faceted into an exquisite Round Brilliant Cut, this stone grades in the top D Colorless spectrum with near-flawless VVS1 Clarity, exhibiting unmatched brilliance, crisp fire, and optical scintillation.
Gemological Identity & Physical Constants: Moissanite is composed of single-crystal Silicon Carbide (SiC), crystallizing in the hexagonal crystal system. In strict adherence to international gemological disclosure standards, all gem-quality commercial moissanite is ethically synthesized in specialized high-temperature laboratory facilities. Under gemological testing, it displays an extraordinary refractive index of 2.65 to 2.69 with a double refraction (birefringence) of +0.043, a specific gravity of 3.22, and an exceptional Mohs hardness of 9.25 (second only to diamond). With a dispersion rating of 0.104—more than 2.4 times that of natural diamond—it throws dazzling rainbow flashes of spectral fire under direct illumination.
Cultural & Modern Jewelry Context: Moissanite is celebrated internationally as an ethical, highly durable, and breathtaking modern gemstone ideal for fine engagement rings, wedding bands, and solitaire jewelry in 14K/18K White Gold, Yellow Gold, or Platinum. Because classical Vedic astrological texts require natural, Earth-mined minerals formed over geological epochs for planetary remedies, Moissanite is not recommended for astrological Jyotish use; rather, it is offered exclusively for modern luxury jewelry and sustainable bridal fashion.
Please Note: Ratna Gems shares these historical, cultural, and gemological details solely for educational awareness. We sell all gemstones strictly on the basis of verified physical authenticity, mineral quality, and accredited laboratory certification, and make no astrological, metaphysical, or curative claims.
360-Degree Video Showcase
[video src="https://www.youtube.com/watch?v=5lmkNDbCHYc"]
Care Instructions
- Clean periodically with lukewarm water, a mild dish soap solution, and a soft-bristled toothbrush to remove body oils and lotions from pavilion facets, then wipe dry with a microfiber cloth.
- With an outstanding Mohs hardness of 9.25, moissanite is impervious to scratching by everyday objects, but should be stored separately from diamonds to prevent surface abrasions.
- Ultrasonic cleaners and steam machines are completely safe for loose moissanite and solid precious metal mountings.
Frequently Asked Questions
What is Moissanite and how does it differ from Natural Diamond?
Moissanite is single-crystal Silicon Carbide (SiC), whereas diamond is pure carbon (C). While natural diamond scores 10 on the Mohs hardness scale with a refractive index of 2.42, moissanite scores 9.25 with a refractive index of 2.65 to 2.69 and double refraction. Moissanite exhibits more than double the spectral fire (dispersion 0.104 vs. 0.044) and identical thermal conductivity, easily passing standard diamond thermal testers.
Is this Moissanite lab-grown or earth-mined?
All commercial gem-grade moissanite is laboratory-created. Natural moissanite exists only in infinitesimal quantities within meteorites and upper-mantle inclusions, making earth-mined crystals far too minuscule for faceted jewelry. Ethically grown under precision thermal synthesis, lab moissanite possesses identical crystal lattice, mineral hardness, and optical properties to its cosmic counterpart.
Will this Moissanite pass a standard diamond pen tester?
Yes. Because moissanite conducts thermal heat identically to natural diamond, basic thermal diamond pens register moissanite as diamond. Gemologists identify moissanite using electrical conductivity testers, 10x microscopic facet doubling (birefringence of +0.043), or specialized Raman spectrometry.
Does Moissanite scratch, fog, or lose its fire over time?
No. With an exceptional Mohs hardness of 9.25, moissanite is impervious to scratching from household dust, metals, or everyday wear. Unlike cubic zirconia (which oxidizes, clouds, and degrades), moissanite never fogs, turns yellow, or loses its brilliance, maintaining lifetime optical transparency.
Is this stone certified by a gemological laboratory?
Yes. Every individual Moissanite stone sold by Ratna Gems is authenticated with an accredited GRA (Gemological Research Academy) Laboratory Report (Certificate No. 1111307615), verifying carat weight, color grade (D), clarity grade (VVS1), symmetry, and optical cut proportions.
More from Moissanite Stones
Lab-Grown Moissanite 1.24 Carat (1.36 Ratti) 7.00 mm Round Brilliant Cut (D Colour, VVS1)
Lab-Grown Moissanite 0.90 Carat (0.99 Ratti) 6.50 mm Round Brilliant Cut (D Colour, VVS1)
Lab-Grown Moissanite 1.73 Carat (1.90 Ratti) 8.00 mm Round Brilliant Cut (D Colour, VVS1)
