The Facet House · Bangkok
Cornflower Blue
|
| 1.91 ctWeight | CushionShape | Sri LankaOrigin |
Weight is the easy part of a sapphire; spread is what a buyer actually sees. This cushion measures 7.49 × 6.54 mm face-up — a genuine centre stone, wide enough to carry a solitaire on its own rather than needing side stones to make up the size.
The crystal is the reason to look twice. Clean, open material transmits light instead of scattering it, and this one reads bright straight through the table, with the colour sitting evenly across the face rather than pooling toward the culet. GFCO graded it Cornflower Blue, Sri Lankan origin stated on the report.
Cutting is a mixed style: a brilliant crown over a five-step pavilion. The crown facets throw light back at the eye while the steps beneath hold the body colour, so the stone keeps its saturation in shade and sharpens under a lamp.
Ceylon has been the reference for blue sapphire for two thousand years. This is what the reference looks like at nearly two carats.
Colour · Daylight · Cornflower Blue
| Family / Species | Natural Corundum |
| Trade Name | Sapphire |
| Weight | 1.91 carats |
| Colour (Daylight) | Cornflower Blue |
| Shape | Cushion |
| Dimensions | 7.49 × 6.54 × 3.90 mm |
| Crown Cut | Brilliant |
| Pavilion Cut | Step (5) |
| Origin | Sri Lanka (Ceylon) |
| Treatment | Standard Heat |
| Refractive Index | 1.760 – 1.770 |
| Specific Gravity | 4.06 |
| Laboratory | GFCO Gem Lab, Switzerland |
| Report Number | AAP92348-47402-2 |
| Report Date | 30 July 2026 |
Full Disclosure
The GFCO report records standard heat. Heating is the long-accepted, permanent and stable treatment applied to the large majority of blue sapphire on the market, and it is disclosed here in full. No other treatment is noted on the report.
GFCO does not assign a clarity grade to coloured stones. Under 80× magnification the laboratory recorded natural inclusions consistent with heated stones — the standard signature of the material and part of what identifies it as natural corundum rather than synthetic.
To the eye, though, this is an exceptionally clean stone. At normal viewing distance nothing reads as an inclusion and the table stays open and bright. Inclusions are present under magnification, as they are in every natural sapphire; here they simply are not doing anything you can see.
Every photograph and the video show the actual stone you will receive, shot in natural light without colour correction. Blue sapphire is notoriously difficult to photograph faithfully; the report reading of Cornflower Blue is the reliable reference for colour.
| Dispatch | Within 7 working days |
| Shipping | Free worldwide |
| Carrier | FedEx / DHL, fully tracked |
| Ships From | Bangkok, Thailand |
| Returns | 30 days |
| Packaging | Discreet, sealed and insured |
About The Facet HouseThe Facet House is a Bangkok-based supplier of natural diamonds and coloured gemstones. We buy at source across Sri Lanka, Madagascar and East Africa, and cut and grade in Bangkok — the centre of the world's coloured stone trade. Every stone is described exactly as it is. Treatments are disclosed, laboratory reports are supplied in the original, and nothing is claimed that a report does not support. |
Contact UsMessage us through eBay for additional photographs, video under different lighting, or a closer look at any inclusion. We reply within 24 hours, Bangkok time. Trade and volume enquiries welcome. If you are matching a pair, sourcing to a specific colour and size, or working to a client brief, tell us what you need and we will look through current stock. |