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Delivery Times

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.

Delivery Costs

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.

Returns

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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Choose Your Diamond

To help you make the right decision, here is our definitive guide to lab-grown and recycled antique diamonds.

start here

Cut

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.

GIRDLE CROWN PAVILLION TABLE CULET

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.

GIRDLE CROWN PAVILLION TABLE CULET

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.

Colour

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.

D
E
F
G
H
I
J
K
L
M
N
O
P
Q
R
S
COLORLESS NEAR COLORLESS FAINT YELLOW VERY LIGHT YELLOW

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.

Diamond Colour Scale

D

E

F

G

H

I

J

K

L

M

N

O

P

Q

R

S

COLORLESS

NEAR COLORLESS

FAINT YELLOW

VERY LIGHT YELLOW

Carat

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

1.5ct
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

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).

FLAWLESS

FL

INTERNALLY
FLAWLESS

IF

VERY VERY
SLIGHTLY
INCLUDED

VVS1 & VVS2

VERY SLIGHTLY
INCLUDED

VS1 & VS2

SLIGHTLY
INCLUDED

S1 & S2

INCLUDED

I1, I2, I3

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.

Diamond Clarity Chart

The chart distinguishes 6 different categories of diamond clarity elicited under 10-power magnification:

FLAWLESS

FL

INTERNALLY
FLAWLESS

IF

VERY VERY
SLIGHTLY
INCLUDED

VVS1 & VVS2

VERY SLIGHTLY
INCLUDED

VS1 & VS2

SLIGHTLY
INCLUDED

S1 & S2

INCLUDED

I1, I2, I3

Diamond Shapes

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

BAGUETTE

CUSHION

EMERALD

MARQUISE

FAQs

What is a diamond?

A diamond is a stone formed from the element carbon. Under high temperature and pressure, atoms form a crystal structure called a diamond cubic.

Which C is the most important?

The most important ‘C’ is the cut. Even if a diamond has excellent colour, clarity and carat weight, if it disperses light poorly will appear dull and lifeless.

How do I care for my diamond?

As we go about our daily lives, jewellery can pick up the dirt and grime that we encounter which can cloud the brilliance of a diamond and dull the surface of platinum and gold. We suggest your ethical engagement ring receives periodic professional maintenance.
Between professional cleans, we would recommend the occasional hand wash using just warm water, mild washing-up liquid and a soft-bristled children’s tooth brush.

1. Place a couple of drops of washing up liquid in a bowl of warm water.
2. Dip both your ethical engagement ring and toothbrush in the bowl and then begin to scrub (for any stubborn dirt then leave to soak for up to 15 minutes).
3. Don’t forget to scrub the inside too.
4. Rinse in warm water.
5. Leave on a paper towel to dry.

How can I learn about the provenance of my sustainable diamond?

Our lab-grown diamonds are accompanied by a certificate see example here which details the process used to grown your diamond and the country it was grown in.
If you opt for a Recycled-Antique diamond, we can give share any known provenance of your diamond - where it was sourced from. We can also advise on the era of the cut and the approximate age of it.

Book an appointment with our in-house gemmologist

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Whether you're looking to treat yourself, treat someone else, or just need some advice - our team of jewellery experts are here to help! We'd be delighted to welcome you to our studio, or to arrange a chat over the phone or via virtual appointment.

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