The Facet House · Bangkok
Cornflower Blue
|
| 1.51 ctWeight | CushionShape | Sri LankaOrigin |
Cornflower blue is the register the trade reserves for a narrow band of Ceylon sapphire — bright and open rather than inky, holding its colour in daylight instead of closing up. GFCO recorded this 1.51 carat cushion in exactly those terms, with Sri Lankan origin stated on the report.
The cutting is a mixed style: a brilliant crown over a five-step pavilion. The crown facets return light to the eye while the steps beneath hold the body colour, which is why a stone cut this way stays saturated in shade and lifts sharply under a lamp. At 6.87 × 6.02 mm it sits comfortably in a solitaire ring or a three-stone setting.
Colour graded under D6500K standard daylight — the condition under which Ceylon blue has always been judged.
Colour · Daylight · Cornflower Blue
| Family / Species | Natural Corundum |
| Trade Name | Sapphire |
| Weight | 1.51 carats |
| Colour (Daylight) | Cornflower Blue |
| Shape | Cushion |
| Dimensions | 6.87 × 6.02 × 3.91 mm |
| Crown Cut | Brilliant |
| Pavilion Cut | Step (5) |
| Origin | Sri Lanka (Ceylon) |
| Treatment | Standard Heat |
| Refractive Index | 1.760 – 1.770 |
| Specific Gravity | 3.97 |
| Laboratory | GFCO Gem Lab, Switzerland |
| Report Number | AAP92350-47402-4 |
| 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 — normal for the material and part of what identifies it as natural corundum rather than synthetic.
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 colour reading of Cornflower Blue is the reliable reference.
| 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 the retail arm of Vir Diam Co., a Bangkok-based wholesale 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. |