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We are proud of our delivery service, with a 5-star customer satisfaction rating and all orders dispatched from our London studio. For items in stock, all orders placed before 2pm will be dispatched the same day. For items out of stock, you will be contacted with an estimated delivery date.
We also insure all jewellery during transit, for your peace of mind. Your experience is important to us, and our small but dedicated team will be available if you have any queries.
UK orders over £200 qualify for free Tracked 24 shipping, which is automatically applied at checkout. We also offer the following delivery services and you can select your preference on the next page:
Royal Mail 2nd Class Signed For - 3 days - £5
Royal Mail Tracked 24 - Next Day - £7.50
Royal Mail Next Day Guaranteed by 1pm - Next Day - £10
Royal Mail Saturday Guaranteed by 1pm - Next Day - £15
Royal Mail International Delivery - £15
If you would like to organise shipping with another courier, such as Fedex or DHL, please get in touch with us at enquiries@lylies.com.
Conscious consuming is about being 100% sure. If you're not, send it straight back within 14 days. Follow instructions here. However, we hope you understand that we cannot accept returns of all engraved products, customised pieces or international orders. Please refer to section 4 and 7 of our T&Cs here.
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The most critical factor of lab-grown and recycled-antique diamond quality, the cut, describes how a diamond’s facets play with light. A diamond that disperses light poorly will appear dull and lifeless, even if it has excellent colour, clarity and carat. Cut is the only one of the 4 C’s that the human hand is responsible for. The process must achieve perfect precision of cut, symmetry and polish to emphasise a diamond’s sparkle.
Cut Grade Determinants
We select diamonds with an excellent rating in precision of cut, symmetry, and polish. Our diamonds will exude fire and brilliance.
Precision of cut
A diamond’s proportions must maximise light reflection so that all of the light that enters it is reflected from its crown.
Symmetry
The facets on any side of a diamond should aim to match those across its axis.
Polish
The final step of the cutting process ensures that a diamond is free from surface blemishes that prevent the reflection of light.
Types of Diamond Cut
Brilliant Cut
The most popular choice of faceting style, a brilliant cut displays triangular and kite-shaped facets that maximise brilliance. Round, cushion, oval, marquise, pear and heart-shaped diamonds all utilise the brilliant cut.
Step Cut
Featuring trapezoidal facets aligned parallel to the diamond’s girdle, this faceting style accentuates a diamond’s colour and clarity. The emerald cut is the most common step cut.
Rose Cut
Rose-cuts, recognised by their flat bottom and domed top, date back to the 16th century and have a vintage and romantic appeal.
White diamonds come with varying degrees of colour. The spectrum ranges from extremely rare colourless diamonds to yellow-tinted warm white diamonds. A diamond’s colour is caused by trace elements of nitrogen that were present when the diamond was formed.
A colour grade chart (23-shades used throughout the industry) helps to determine the diamond's colour, and it is assigned a letter from D (colourless) to Z (light yellow). D colour diamonds are the most highly prized because of their rarity.
Colour is less relevant to lab-grown diamonds because they are grown in controlled conditions.
How Important is Diamond Colour?
Since colour grade considerably alters a diamond’s look, colour is the second most significant of the 4 C’s.
Carat signifies the weight of a diamond, not its size. Whilst one diamond may have a higher carat than another, it does not imply that it will look bigger to the eye. Rather, its size is influenced by the shape and depth of the diamond cut. When we talk about carat weight, we do so to the hundredth decimal place to maximise precision (0.75cts). One diamond carat equals 200 milligrams.
Is a higher carat weight superior?
Carat weight alone does not equate to a diamond’s value. That said, a diamond's value is calculated on a per-carat basis. The 4 C’s must be collectively taken into consideration to decide its value.
Diamond Carat Weight Estimations
ROUND
0.25ct
4.1mm
diameter
0.5ct
5.1mm
diameter
0.75ct
5.8mm
diameter
1ct
6.5mm
diameter
1.5ct
7.4mm
diameter
2ct
8.1mm
diameter
3ct
9.3mm
diameter
4ct
10.2mm
diameter
5ct
10.2mm
diameter
CUSHION
4 x 3.5mm
5 x 4.5mm
6 x 5mm
6.5 x 5.5mm
7.5 x 6.5mm
8 x 7mm
9 x 8mm
10 x 8.5mm
10.5 x 9mm
Clarity grade identifies the number of inclusions (internal flaws) and blemishes (external imperfections) in a diamond. A diamond may contain traces of minerals and uncrystallised carbon, appearing as inclusions, because of its organic formation deep within the earth under extreme heat and pressure. The fewer inclusions and blemishes a diamond contains, the higher its clarity grade.
Clarity is less relevant to lab-grown diamonds because they are grown in controlled conditions, therefore they do not have many inclusion such as are common in mined diamonds. We offer VVS or VS only (see chart below).
How Important is Diamond Clarity?
Diamond clarity influences the way light reflects and refracts, therefore the presence of inclusions and blemishes will result in a diamond with less sparkle. A good clarity grade is critical for brilliance and fire.
The shape encompasses the geometric outline and overall physical form of a diamond. Every diamond shape has its own attributes and cut specifications, which also play a large factor in the overall look of the stone.
ROUND
ROSE
OLD MINE
OLD EUROPEAN
ASSCHER
PEAR
OVAL
PRINCESS
EMERALD
CUSHION
BAGUETTE
MARQUISE
What is a diamond?
Which C is the most important?
How do I care for my diamond?
How can I learn about the provenance of my sustainable diamond?
LYLIE is a female-run company who have been making sustainable jewellery since 2017, using gold salvaged from our Gold Exchange combined with recycled antique and lab-grown diamonds.
ABOUT LYLIE
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