Treated Black Diamonds Round Rose-Cut


This treated rose-cut round black diamond is ideal for vintage or modern designs using precious stones that call for a dark stone to complement the metal type and/or other stones in the design. Set it in a simple mounting by itself of pair it with any color or size of faceted stone or cabochon to create a pendant, ring or bracelet. This stone may contain characteristics of both SI1 and SI2. It shows small, possibly noticeable inclusions visible under 10X magnification and will be eye-clean when oriented face up. Diamond is the birthstone for April.

Composed only of carbon and shaped by eons of incredible heat and pressure, diamond is the hardest gemstone known to man and are sought after as the stone of choice for engagement rings, anniversary gifts and congratulatory gifts for graduation, promotion and other milestone accomplishments. When properly cut, diamond generates a high dispersion of light, creating the "fire" of color for which the stone is so treasured. Diamonds occur in nature in a variety of colors including red, green, yellow, blue and black; however, it is the clear, colorless gem that remains the most popular in jewelry. According to legend, diamond is the combination of all gems, "pure as a dewdrop and invincible." Folklore holds that it is the symbol of perfection and illumination, enhancing second sight and stimulating ingenuity.

A favorite of yesteryear, this rose-cut faceting features a flat base (no pavilion) and a crown made up of triangular facets.

Please know that every diamond you buy from Rio Grande is certified conflict-free. Rio has earned certification from the Responsible Jewellery Council, verifying that we are in compliance with the Kimberley Accord and that our stones, our supply chain and our facility meet the high standards of the RJC Code of Practices. Further, RJC routinely conducts audits to certify that we are maintaining these standards.

Diamonds offered by Rio Grande are meticulously selected by our expert gemologists to present the highest standard within each gemstone grade. Stones fit into your settings securely and reliably.

  • Cutting Center : India
  • Stone(s) shape : Round
  • Material : Diamond
  • Stone type : Natural
  • Select carat weight : .14-.18 ct.
  • Color : Black
  • Clarity : Opaque
  • Mohs hardness : 10
  • Refractive index : 2.417
  • Enhancement : Heat-treated (H)
  • Specific gravity (g/cm3) : 3.515
  • Stone type : Mined

Please Note: • Diamond sizes are not uniform; carat weight will vary slightly based on the dimensions of each stone.
• To order diamonds, or to ask about larger sizes or additional colors, please call our Rio Grande Diamond Source team at 800.257.7026. Depending on your computer monitor, magnification will vary; enlargements will appear 10 to 15 times larger and inclusions will be evident.
• Clean with warm, soapy water. Ultrasonic and steam cleaning are usually safe.

Catalog page: 2019-2020 Gems and Findings & Display and Packaging Catalog p.685