Lab Grown Columbia Emerald Round Shape Hand-cut Gemstone VVS1 for Jewelry Rings Earrings Making Selectable Certificate
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Estimated Delivery:Jun 10 - Jun 14
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Free Shipping & Returns: On all orders over $75
Lab Grown Columbia Emerald Round Shape Hand-cut Gemstone VVS1 for Jewelry Rings Earrings Making Selectable Certificate
SPECIFICATIONS
Brand Name: CHAOPAIZHIWU
Certificate: Yes
Certificate Number: As Certificate Number
Certificate Type: Third Party Appraisal
Color: Ememrald Green
Fine or Fashion: Fine
High-concerned chemical: None
Item Height: Standard
Item Shape: Round Shape
Item Type: beads
Item Weight: 0.5-10ct,0.5-10ct
Main Stone: Emerald
Metals Type: None,Lab Grown Ememrald
Origin: Mainland China
Shape: Emerald Cut
1. Chemistry and Structure
Composition: Identical to natural emeralds, lab-grown emeralds consist of beryllium aluminum silicate (Be₃Al₂(SiO₃)₆) with trace chromophores (chromium, vanadium) that produce their iconic green hue.
Synthesis Methods:
Hydrothermal Method: Mimicking natural growth conditions, aluminum oxide, beryllium oxide, and other raw materials are dissolved in a high-temperature, high-pressure aqueous solution. Seed crystals induce controlled growth over 2–3 months.
Flux Method: Raw materials are mixed with fluxes (e.g., lead molybdate) and heated to 1,400–1,500°C. Slow cooling allows emerald crystals to precipitate over 6–12 months.
2. Physical Properties
Hardness: Mohs –(slightly lower than natural emeralds), requiring care to avoid scratches during daily wear.
Optical Performance: Refractive index 1.566–1.602, birefringence 0.005–0.009, and dispersion 0.014 (lower than diamond). Vivid color but subdued fire.
Density: 2.67–2.78 g/cm³, closely matching natural emeralds.
Inclusions: Hydrothermal-grown stones often show "nailhead" or "cloud-like" inclusions; flux-grown stones may contain flux residues or metallic filaments.
3. Jewelry Applications
Core Use Case: Affordable alternatives to natural emeralds (1/10–1/5 the cost), ideal for everyday jewelry or high-end custom designs.
Treatment Techniques: Some products undergo oiling (to improve clarity) or surface coating (to enhance color), though treatments must be disclosed.
4. Quality Grading
Color: Graded by GIA standards from Light to Dark, with "Emerald Green" (vivid, saturated hue) being the most desirable.
Clarity: Lab-grown emeralds are typically cleaner (VS to IF grades) compared to naturally occurring stones, which often contain fractures and inclusions.
Cut: The classic emerald cut (step-cut) maximizes color display, requiring attention to proportion and symmetry.
This translation maintains technical precision, aligns with industry terminology, and preserves the original structure for clarity.
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All the details you love about the original—with a fresh flared block heel and modern square toe. Expertly crafted using soft Nappa leather, this essential style molds and moves with you to keep you comfortably on your feet all day (and night). This boot uses leather sourced from a Leather Working Group-approved trader. The Leather Working Group (LWG) Audit Standards provide transparency and accountability within the leather supply chain—covering energy and water usage.
Do you ship internationally?
All the details you love about the original—with a fresh flared block heel and modern square toe. Expertly crafted using soft Nappa leather, this essential style molds and moves with you to keep you comfortably on your feet all day (and night). This boot uses leather sourced from a Leather Working Group-approved trader. The Leather Working Group (LWG) Audit Standards provide transparency and accountability within the leather supply chain—covering energy and water usage.
What is your return policy?
All the details you love about the original—with a fresh flared block heel and modern square toe. Expertly crafted using soft Nappa leather, this essential style molds and moves with you to keep you comfortably on your feet all day (and night). This boot uses leather sourced from a Leather Working Group-approved trader. The Leather Working Group (LWG) Audit Standards provide transparency and accountability within the leather supply chain—covering energy and water usage.
What are your sizing options?
All the details you love about the original—with a fresh flared block heel and modern square toe. Expertly crafted using soft Nappa leather, this essential style molds and moves with you to keep you comfortably on your feet all day (and night). This boot uses leather sourced from a Leather Working Group-approved trader. The Leather Working Group (LWG) Audit Standards provide transparency and accountability within the leather supply chain—covering energy and water usage.