Lovenhall Diamond
Free on iPhone, iPad & Android · the tools below are free in the browser
№ I · iPhone, iPad & AndroidDiamond Identifier
Photograph a diamond and the instrument estimates the four Cs — colour, clarity, cut and carat — then gives a value range to work from. A first look, whether the stone is loose or already set.
Free on iPhone, iPad & Android. Any figure it gives is an estimate, not an appraisal.
What it reads, and what it cannotThree moves, and you have a figure
You photograph it. The instrument reads it. You know where you stand.
You photograph it
One photograph. Nothing to fill in, nothing to send away.
It reads what it sees
The reading happens there and then, on the phone.
You have a figure to work from
A range, in seconds — enough to know where you stand.
The four Cs, and the shape
How a stone is read — cut, colour, clarity and carat, plus the outline you choose. Tap through each to see it.
Cut is what makes a diamond sparkle
Cut is not the shape — it is how precisely the facets are proportioned and polished. A well-cut stone catches light and throws it back through the top as brilliance and fire; a poorly cut one lets light leak out of the sides and bottom, and looks dull however good its other grades.
- Excellent / Ideal cuts return the most light and reward a trained eye more than any other factor.
- Proportions, symmetry and polish are all graded — depth and table percentages matter.
- A higher cut grade can make a smaller or lower-colour stone look livelier than a larger, poorly cut one.
A well-cut stone returns light through the crown; a poor cut leaks it through the base.
Free tools of the room
A range to orient you, in seconds.
On the reading of diamonds
- Carat sets the starting point, but cut, colour and clarity move the figure far more than weight alone.
- Value is anchored to recent comparable sales — like for like on grade, shape and certification.
- Certification from a respected laboratory typically lifts confidence and price; an uncertified stone is discounted for the doubt.
Verify a diamond certificate, or authenticate signed jewellery
Two questions, two answers: whether a grading report is genuine and describes your stone, and whether a signed piece is the house it claims to be.
From the Journal
Longer, plain-English guides on the questions we are asked most — free to read.
Lovenhall DiamondWrite about a stone
A question about an instrument, a piece it could not place, a partnership or a press enquiry — the house answers every note, in confidence.