Frequently Asked Questions

General Information

We source our diamonds directly from the diamond manufacturers that produce the stones globally which means we can offer the stones at almost wholesale price to the retail market. As a predominantly online company our overheads are much smaller which means we can offer our stones at a more competitive price.

In any case you are dissatisfied with our product quality; (excluding GIA certified diamond and design preference) get in contact with us for an official refund within 14 days. Proceed with making arrangements to return the goods to us in its original condition. Upon receiving it, we will record a video of the sealed package to verify the authenticity of the product for confirmation, and the refund will be made to your bank account within 30 working days.

All ZCOVA™ products come with a lifetime warranty against manufacturing defects on jewellery only. Please refer to our product warranty details.

At ZCOVA™ we only offer certified diamonds either by GIA or HRD. To ensure the diamond authenticity we at ZCOVA will provide our customer with the picture or video of the laser inscription on the diamond before the delivery of your product.

Once you have confirmed on the item you wish to purchase, at the checkout page you have the option to pay 70% or 100% either by Bank Transfer, Credit Card, or Cash (please make an appointment with us if you wish to make the payment by cash).

Yes, we do have samples to show ZCOVA workmanship. If we do not have samples of the design you have chosen we will provide the rendered image for your reference.

Diamond and Jewellery Information

Diamonds that are said to be fluorescent contain particles that emit a visible (usually blue) glow when exposed to UV lighting. In rare cases, high levels of fluorescence can make stone appear milky or hazy, although for the most part fluorescence does not generally impact beauty or sparkle and can even make some lower colours ( I,J,K,L etc) appear more colourless white.

All our diamonds above 0.30 carats come with GIA Certification. Any diamonds below 0.30 carat has no certification. Our Sales Invoice serves as both the certification and warranty.

We offer the majority of our jewellery in 18k and 22k Gold (white, rose and yellow) and Platinum. Because of the density of platinum there are some more intricate pieces that cannot be produced in Platinum.

Your white gold ring is really yellow gold that is alloyed with nickel or palladium to “bleach” the gold to a white colour. Currently, the most common alloy of choice for the jewellery industry is nickel. Nickel is used as a whitener and the final polished white gold alloy remains slightly “gray-yellow” in appearance. White gold is generally electroplated with bright rhodium to conceal the “gray-yellow” appearance. The result is bright and fabulous! Normally the yellow “tint” of the white gold would not be noticed if the rhodium layer has not worn off and the surface remains highly polished. Most owners of white gold are somewhat surprised that their bright white gold now looks dull and yellow. As time progresses, exposure to chloride normally present in many household chemicals and skin perspiration will discolour the exposed white gold alloy to a darker gray-yellow colour.

With every purchase, we will provide you with a free ring sizer. The item will be couriered to you once payment has been made.

Not to worry! Your first resize is always free of charge and you can come into our showroom to size finger correctly or alternatively, you can check at a local jeweler and then send the ring back to us. However, please take note that our resize allowance has a limitation of three sizes up or three sizes down. If the resize is out of the range, additional charges will be applied.

Collection and Shipping Information

Yes we do.

We ship internationally via Fedex. However, the buyer will have to bear the shipping cost.

All items are fully insured by us until they reach the requested delivery address and a signature is given on delivery.

Once your item has been dispatched we will email you a tracking number and an online link so you can trace the delivery status or your order. Or you can view this information from your personal account.


No. Browse LUMOS by ZCOVA Diamonds at

No. To qualify for LUMOS by ZCOVA grade, the diamond has to fulfil two criteria:

  1. Graded Triple Excellent by GIA
  2. Certified ‘Ultimate’ grade in Light Performance by Sarine

The Sarine report will only be issued once the diamond is confirmed and has arrived in our office. You will receive a link to your Sarine digital report 1 month after your purchase.

Browse all our LUMOS by ZCOVA Diamonds at Speak to a Curator online or drop by our Galeria for assistance.

Unlike others, we provide this extra brilliance at no additional cost; it’s a ZCOVA service.