Aurora Rivière

€ 245,000

Forty-one brilliants grown within a single reactor cycle, so fluorescence and colour read as one continuous body of light across the collarbone.

True scale

12.40 ct · ⌀ 15.04 mm

Finger size (EU)

Drawn to the millimetre against a 52 finger. Screens vary slightly; the salon holds physical models of every carat step.

Delivered with its optical performance report and full reactor record.

Complimentary sizing, annual inspection and lifetime re-polish.

Seed to setting

The record of this stone

01 · Day 0
Seed plate
A 0.3 mm slice of type IIa carbon is selected and mapped for lattice defects.
02 · Weeks 1 – 14
Reactor
Plasma growth at 1,050 °C, logged hour by hour for fourteen weeks.
03 · Week 15
Anneal
High-pressure anneal removes residual strain colour; measured before and after.
04 · Week 16
Planning
The rough is scanned at 0.01 mm and the cut plan chosen for fire, not for yield.
05 · Weeks 17 – 19
Cutting
Facets are laid to house proportions; pavilion angle held to ±0.15°.
06 · Weeks 20 – 22
Setting
410 bench hours, claws cut from the metal itself and closed by hand.
07 · Week 23
Report
Optical performance mapped at 21 points and archived under AUR-09.

Brilliance, fire and scintillation mapped across the crown at 21 measured points.

Fourteen weeks of growth logged hour by hour, reprinted in full in your dossier.

The bench notes of the setter who finished the piece, signed and dated.