Buy & Sell Gem Stones With Confidence
Discover, buy, or sell exquisite gems from trusted dealers worldwide.
Why Choose Us?
- Wide selection of certified precious stones: diamonds, rubies, sapphires, emeralds, and more.
- High-resolution galleries to showcase each stone’s unique beauty.
- Detailed product descriptions and transparent pricing for informed decisions.
- Secure purchasing and selling process for peace of mind.
- Verified customer reviews and testimonials as trust signals.
How It Works
- Browse or List Stones: Explore our curated collection or easily list your own gems for sale.
- Connect With Buyers & Sellers: Direct messaging and support for smooth transactions.
- Safe Payment & Delivery: Secure payment gateways and insured shipping options.
- Understanding the 4C—Carat (weight), Colour, Clarity, and Cut—is essential for diamond investment. Every diamond is unique, and even subtle variations can significantly impact its value.
Why Buy or Sell Here?
- Hassle-free experience with expert support and free technical assistance.
- Promotions and discounts for first-time buyers and sellers.
- Community-driven: share your experience and see real customer stories.
Main Gem Stones overviews
Diamond
Diamonds are pure carbon crystals, renowned for their unmatched hardness (the hardest natural material, rated 10 on the Mohs scale) and exceptional brilliance. Their value is determined by the „Four Cs”: carat, color, clarity, and cut. Diamonds are typically transparent but can occur in various colors due to trace elements.
Pearl
Pearls are organic gems formed inside mollusks. They are composed mainly of calcium carbonate and are prized for their luster and smooth, round shape. Colors range from white and cream to black, pink, and gold. Pearls are softer than most gemstones, with a Mohs hardness of 2.5–4.5.
Sapphire
Sapphires are a variety of corundum (aluminum oxide) and are best known for their blue color, though they appear in many hues except red (which are rubies). Sapphires are very hard (Mohs 9), durable, and valued for their brilliance and range of colors.
Ruby
Rubies are the red variety of corundum, colored by chromium. They are prized for their vivid red color and fluorescence, which can intensify their hue. Rubies are also very hard (Mohs 9) and are among the most valuable colored gemstones.
Emerald
Emeralds are the green variety of beryl, colored by trace amounts of chromium or vanadium. They have a Mohs hardness of 7.5–8 but are often included (contain internal fractures), making them less tough. Emeralds are celebrated for their rich green color.
Opal
Opals are hydrated silica minerals, unique for their play-of-color-a shifting rainbow effect caused by their internal structure. Opals have a Mohs hardness of 5–6.5 and can display every color of the spectrum. Black opals and those with red flashes are especially prized
Diamond clarity scale
| Grade | Full Name | Description |
| LC | Loupe Clean (Flawless / Internally Flawless) | No inclusions or blemishes are visible to a skilled grader using 10x magnification. |
| VVS | Very, Very Slightly Included | Minute inclusions that are very difficult for a skilled grader to see under 10x magnification. |
| VS | Very Slightly Included | Minor inclusions that are difficult to see under 10x magnification. |
| SI | Slightly Included | Noticeable inclusions that are easy to see under 10x magnification. |
| P | Piqué / Included | Inclusions are obvious under 10x magnification and often visible to the naked eye, which can affect the diamond’s brilliance and value. |
Diamond size vs. carat weight
| Diamond size mm | Carat Weight |
| 4 mm | 0.25 ct. |
| 5.0 mm | 0.50 ct. |
| 5.75 mm | 0.75 ct. |
| 6.5 mm | 1.00 ct. |
| 6.8 mm | 1.25 ct. |
| 7.3 mm | 1.50 ct. |
| 7.75 mm | 1.75 ct. |
| 8 mm | 2.00 ct. |
| 8.7 mm | 2.50 ct. |
| 9.1 mm | 3.00 ct. |
| 9.75 mm | 3.50 ct. |
| 10.25 mm | 4.00 ct. |
| 10.75 mm | 4.50 ct. |
| 11 mm | 5.00 ct. |
| 12 mm | 6.84 ct. |
| 14 mm | 10.49 ct. |
| 15 mm | 12.89 ct. |
| 16 mm | 16.06 ct. |
Diamond Size Chart – How to Read It?
The weight of a diamond is expressed in carats (ct), where 1 carat = 0.2 grams, and a carat is divided into 100 points (e.g., 0.50 ct = 50 points = 0.1 g).
The size chart shows the approximate dimensions of a diamond (e.g., diameter in mm) corresponding to a specific weight. For example, a round brilliant cut diamond weighing 1 ct has a diameter of about 6.3–6.5 mm and a depth of about 3.9 mm.
Thanks to these charts, you can quickly estimate the weight of a diamond based on its dimensions. For example, a diamond with a diameter of 4 mm weighs approximately 0.25 ct, and one with a diameter of 6.5 mm weighs around 1 ct.
These charts often also include the dimensions of other gemstones, allowing for comparisons of size and weight between different stones.
The weight of a diamond can also be calculated using the formula:
Weight = (Average Diameter² × Depth × 0.0061 × Correction Factor)
where the correction factor accounts for the thickness of the girdle and the proportions of the cut.
Buy, sell, or request a free appraisal today!
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