FAQ Diamonds

With the increasing variety of synthetic diamonds, professional testing is essential. However, here are a few simple tricks to identify basic fakes:

• Size vs. Weight Check – A 1-carat round diamond should measure around 6.4-6.5 mm. If a stone weighs 2 carats but has the same dimensions as a 1-carat diamond, it is likely fake.
• Transparency Test – Place the diamond over a marked white paper. If you can see the markings through it, it's not a real diamond. (Note: This only eliminates low-quality fakes, not more advanced ones.)

Professional Testing – The best way to be sure is to schedule a free appointment with us. We use advanced diamond testing machines to confirm authenticity and can also provide an evaluation of its value.

The most widely accepted and respected diamond certification is GIA (Gemological Institute of America). It is known for its strict grading standards, making it the most trusted certificate in the market.

Other certifications, such as IGI (International Gemological Institute) and HRD (Hoge Raad voor Diamant), are also legitimate, but they may have slightly looser grading standards, leading to a broader price range for resale.

Natural diamonds are priced based on the Rapaport Diamond Price List, where the 4 Cs play a crucial role:

• Carat (Weight) – Larger diamonds command higher prices, and price jumps significantly between certain size categories (e.g., 0.99ct vs. 1.00ct).
• Color (D-Z Scale) – D-color diamonds (colorless) are the most valuable, while diamonds with noticeable color (closer to Z) sell for less.
• Clarity – Fewer inclusions mean higher value. A flawless diamond will always be more expensive than an included (I1, I2, I3) diamond.
• Cut – Cut quality affects how well the diamond reflects light. Excellent and Very Good cuts retain the most value, while Poor or Fair cuts reduce the price.

💡 Better cut diamonds result in a smaller price discount, as they require more rough diamond weight to be removed during cutting.

Unfortunately, lab-grown diamonds currently have no resale market. To our knowledge, no one is buying back lab-grown diamonds at this time.

💡 If the resale market changes, we would love to be informed, as many people ask us about selling their lab-grown diamonds.

Selling an uncertified diamond can be tricky, especially if you have limited knowledge and are negotiating with a professional buyer. Here are some key considerations:

• Is your diamond over 1 carat? If yes, it’s best to assess it loose, rather than in a setting, for an accurate evaluation.
• Are you willing to remove your diamond from its setting? Buyers often offer a lower price if they cannot fully examine the diamond in its setting.
• Can we help you certify your diamond? We can arrange GIA certification before you decide to sell, ensuring you get a better price.
• Is your diamond old and in need of re-cutting? If yes, there is a risk factor for the buyer, as cutting a diamond can lower its clarity grade. This affects the offer price.

💡 We can guide you through the process and help you get your diamond properly assessed.

Yes! We specialize in buying damaged and chipped diamonds.

• As diamond cutters, we calculate the risk involved in re-cutting a damaged diamond and factor this into our offer.

Since re-cutting always carries a risk, we offer a fair price while accounting for possible weight loss and clarity changes during the process.

Historically, the diamond market experienced steady growth. However, in recent years, the market has faced challenges, mainly due to the rise of synthetic diamonds and changing consumer demand.

• The future remains uncertain, as lab-grown diamonds continue to drop in price and have zero resale value.

Despite market shifts, natural diamonds still hold value, but prices fluctuate based on global demand and supply.

• Private Sale – Finding an individual buyer willing to pay a premium can yield the highest price, but this process can be time-consuming.
• Sell to a Professional Dealer (Like Us!) – We provide a transparent, quick, and hassle-free process with a fair market offer. You can send us your diamond details for a free initial quote to understand your selling options.

As diamond professionals, we are always hopeful for market recovery. Some price improvements have been felt recently, but the long-term trend remains uncertain.

💡 In the past, diamond prices consistently increased, but future market trends are unpredictable. If you're considering selling, we can help you assess whether now is the right time based on current pricing.

In Singapore, almost no one pays for small diamonds (melee stones) for a few key reasons:

1. Dismounting Costs – If jewelry needs to be melted down, removing small diamonds adds extra labor costs.
2. Mixed Lab-Grown Diamonds – Many small diamonds are mixed with synthetic stones, creating difficulties in resale.
3. Quality Assessment Challenges – Grading many tiny diamonds accurately is time-consuming, making resale complicated.

💡 However, we do buy melee diamonds, and our pricing is based on weight and approximate quality.

At Sell Your Jewelry, we provide a transparent, secure, and professional selling process. Whether you’re selling a GIA-certified diamond, an uncertified stone, or even a damaged diamond, we offer fair prices and expert evaluations.

📅 Book a free appointment with us today to get your diamond assessed with no obligations!