We do try to add all the available information at the time of description writing but if there is a specific question you have, I will do my best to answer it for you. AS we purchase Jewellery and Art is sizable quantities, I can guarantee that we have no information on the previous owner or the provenance of a particular item other than that which you can find in the description. This includes in Jewellery any touch-marks, hallmarks, signatures or other authenticated ways of identifying either the maker or the country.
All the Jewellery made before 1970, we assign them an period to which belong, in accordance with their characteristics, design, setting, gemstones, making, metals etc.
Chronologically the main styles belong to the following periods:
Years 1780 – 1820 Neoclassic
1840 – 1900 Elizabethan, Empire, Victorian
1890 – 1910 Art Nouveau or Modernist
1910 – 1940 Art Decó
1940 – 1955 Chevaliére or Retro
1950 – 1960 Years ´50
1960 – 1970 Years ´60
This is the term we apply to any item of Jewellery and Art Works we believe was not made during the era the style represents. We use the word “style” in our item titles only, the page and small item titles are too short to accept this many characters. We are sorry if this is inconvenient for you but even internet functioning has some drawbacks.
Because there are insufficient original period Jewellery, to supply the increasing demand for aesthetic and unique styles of antique Jewellery, we offer a wide selection of each category of Jewellery made in the styles Art Decó, Nouveau, Victorian etc
Our rigorously controlled Jewellery, are almost impossible to discern from the original due to the superior quality of workmanship, often being mounted whit European-cut mêlé in addition to and old mine-cut; except for the fact the integrity of a recently made Jewellery be safely vouched for by ArtDiplomatic.com .
The precious metal that we use habitually in Jewellery are the Platinum, the Gold and the Silver. As in pure state are very soft, alloy with other metals (mainly palladium, silver, cooper etc) to give them hardness.
The percentage of precious metal used in a alloy is expressed with millesimal (mm) and indicated in carat (K), with the equivalence in pure state 1.000 mm = 24 K.
As there is no international homogenize on the on the different metals with which are alloyed the precious metals, following the practical majority, we abide by the percentage of the precious metal of which we deal, following the domination under indicated:
Platinum................................................950 o 900 mm
Pure Gold ..........................................1.000 mm = 24 K
Gold 1st Purity .................................... 750 mm = 18 K
Gold 2º Purity ...................................... 583 mm = 14 K
Low Gold ............................................. 583 mm
Silver 1st Purity ...................................925 mm o sterling
Silver 2º Purity .................................... 800 mm
Following the international regulations, the size of the gemstones is expressed in terms of its weight in carat (ct), with the equivalence of 1 ct = 100 points = 0,20 gr.
In set gemstones, the weight is always approximate, reaching them by means of mathematic calculation in term of their real sizes
(when the making of the Jewellery permits it) and their specific weight. Or by comparison by carat gauges.
In both hypothesis, it is considered normal deviations for excess of for defect of a 10%; that in some types of old mine
cuts or irregular cuts could be majors.
G.I.A. is an abbreviation of Gemmological Institute of America, this how the SCAN D.N. for Scandinavian Diamond Nomenclature; H.R.D. for Gemmological Institutes and Laboratories of Antwerp ; CIBJO for International Confederation of Jewellery, Silverware, Diamonds, Pearls and Stones, are institutes supports a standard of identifying the colour, cut and clarity of diamonds in order for us compare stones.
Clarity grading follows a hierarchy describing the extent of impurities in a diamond. All clarity grading is carried out under a 10x magnification. The more impurities in a diamond the lower the price per carat.
| IF | Internally Flawless | No inclusions and only insignificant blemishes. |
| VVS1 & VVS2 | Very Very Slight Inclusion | Extremely difficult to see, visible only from the back the stone, or small and shallow enough to be removed easily by repolishing. |
| VS1 & VS2 | Very Small Inclusion | Still difficult to see with the untrained eye. |
| SI1 & SI2 | Small Inclusion | Easy (SI1) or very easy (SI2) to see with a 10x lens. When these have been located with a 10x lens, look at the stone with the naked eye and the inclusion can sometimes be spotted. |
| I1, I2 & I3 | Inclusions | May be eye-visible face up without the aid of a lens. In I3, the may threaten the stones durability. |
Colour grading follows a scale describing the “whiteness” or absence of secondary colour in a white diamond. At the top of the scale a diamond will appear white, and at the bottom yellowish or brownish.
| G.I.A. | OLD WORLD TERMS | ||
| D | Jager | ||
| E | Finest White | The top colour grades, D, E, F, describe a diamond which appears colourless against a white background. | |
| River | |||
| F | |||
| Fine White | |||
| G | Top Wesselton | In near colourless diamonds, G, H, I there is a slight trace of colour which will not be apparent to the untrained eye. Stones 0,50 ct or less will look colourless. | |
| H | Wesselton | White | |
| I | Top Crystal | Comercial White | |
| J | Crystal | Diamonds graded J, K, L, will have notable traces of colour. Small stones in this range will “face up” colourless when mounted but larger stones will be tinted. | |
| K | Top Silver Cape | ||
| Top Cape | Silver Cape | ||
| L | |||
| M | Cape M | Light Cape M – N | Diamonds graded M – Z will display a yellowish tint even to the untrained eye |
| Very Light Yellow |
Cape O - R Dark Cape R – Z |
||
| Z + | Fancy Colours | Colores fantasía | Z + colour grade indicates that the diamond is of fancy colour and therefore fall into a different price bracket. |
As general norm to identifying the different types of cut, we have to distinguish three basic parties of the diamonds:
- Crown: Upper and visible part of the gem
- Girdle: Thread which mark the limit of the cut with the lower part of the gem .
- Pavilion: Lower part of the gem.
In term of the cuts and facets that the diamonds may have we can classify :
| ROSE CUTS: |
|
| SIMPLE CUT: | 8 facetas en corona y 8 facetas en la culata |
| SWISS CUT: | facets in the crown and 16 facets in the pavilion |
| BRILLANT CUT: | 33 facets in the crown y 24/25 in the pavilion |
| OVAL-shape: | 32 facets in the crown and 22 facets in the pavilion |
| PEAR-shape: | facets in the crown and 23 facets in pavilion |
| MARQUISE-shape: | Navette form, 32 facets in the crown and 22 facets in the pavilion |
| HEART-shape: | 32 facets in the crown and 22 facets in the pavilion |
| BAGUETTES: | Rectangular 4 facets in the crown and 8 facets in the pavilion |
| TAPER: | 4 facets in the crown and 4 facets in the pavilion |
| CARRE: | 8 or 12 facets in the crown and 8 or 12 facets in the pavilion |
| EMERALD: | Being the usual shape in which the emeralds are cut, in the diamonds 24 facets in the crown and 24 facets in the pavilion |
| RADIANT: | Octahedron 40 facets in the crown and 28 facets in the pavilion |
| PRINCESA : | Square 20 facets in the crown and 28 facets in the pavilion |
| CABOCHON: | Convex the upper part and occasionally convex the low part |
| DROP: | Drop stylized completely facet |
ArtDiplomatic.com
specify the nature of the stones through the objective reading of their optical and density, in this case , properties, when the
mounted of Jewellery permits.
Supposing that the identifications is complicate, we provide you our professional opinion.
We identify the natural or artificial origin of the gemstones by its name (for example emerald, ruby, sapphire...), means that it is natural without doubt.
Traditionally, gemstones have been treated by a variety of techniques to enhance colour and generally to improve their appearance.
Typically, rubies and sapphires have been heat treated and emeralds have been treated by oil or resin to improve colour and clarity.
These or other techniques, such as dyeing, irradiation, coating and impregnation, may be used on other gemstones.
Although it is widely believed that heat treatments are permanent, purchasers should assume that any treatment may not be permanent
and that over time special care of the stone may be required. Prospective purchasers are reminded that, unless the description
specifically states that a stone is natural, we have assumed that some form of treatment may have been used and that such treatment
may not be permanent. Our presale estimates reflect this assumption.
Statement in the catalogue regarding the condition of pieces in this sale usually appear in the description. However, the absence of
any such reference does not imply that a lot is in perfect condition or completely free from wear or imperfections.
The term “natural” ” is used only to refer to the natural pearls no cultured, and the “size” is refer by their weight in “mommes” (1 momme = 18,75 caracts), or grains (1 grain = ¼ carat) .
The cultured pearls obtained in the sea we should distinguish in:
- Akoya: Cultured generally in Japan and of the maximum size of 10 mm.
- Australian: With characteristics of the cultured pearls in the south sea, and sizes normally, more than 10 mm.
- Tahiti-Polynesia: Those natural coloration more dark.
Fresh water pearls, naturals or cultured, with or without nucleus, which have not been get in the sea. At the present time, it is possible to reach including bigger than 10 mm.
Imitation pearls , those are produced by a round nucleus, covered by several coats of nacreous essence (guanin in nitrate or acetate of cellulose) . .
For the determination of the quality and appraisal of a pearl, it should be considerate the characteristics of Size / Weight, Shape, Colour, Lustre, Coat cultivation, Superficial texture and, matching.
The standard length of a string of pearl is called CHOKER and at the present time tally with 40 cm.
The are different length of necklace to show off depending on the occasion:
- SHORT NECKLACE (30 – 35 cm) generally of several rows (multi-strings), to combine with elegant dress with “V” neck, “Neck line” or bare shoulder.
- SHORT NECKLACE (35 – 4e cm) is the most common and adaptable for any articles of clothing dressy or sporty .
- PRINCESS (43 – 50 cm) adapted for round neck and heigh, suitable for low neck line.
- MATINÉ(morning) (50 – 60 cm) for professional and sporty clothes.
- OPERA (71 – 86 cm) could be used as such or rolling in two times.
- ROPE (110 – 120 cm) as Coco Chanel
| Metric | French/Japanese | English | American |
37.8252 |
- |
A |
½ |
38.4237 |
- |
A½ |
¾ |
39.0222 |
- |
B |
1 |
39.6207 |
- |
B½ |
1¼ |
40.2192 |
- |
C |
1½ |
40.8177 |
- |
C½ |
1¾ |
41.4162 |
1 |
D |
2 |
42.0147 |
2 |
D½ |
2¼ |
42.6132 |
- |
E |
2½ |
43.2117 |
3 |
E½ |
2¾ |
43.8102 |
4 |
F |
3 |
44.4087 |
- |
F½ |
3¼ |
45.0072 |
5 |
G |
3¼ |
45.6057 |
- |
G½ |
3½ |
46.2042 |
6 |
H |
3¾ |
46.8027 |
- |
H½ |
4 |
47.4012 |
7 |
I |
4¼ |
47.9997 |
8 |
I½ |
4½ |
48.5982 |
- |
J |
4¾ |
49.1967 |
9 |
J½ |
5 |
49.7952 |
10 |
K |
5¼ |
50.3937 |
- |
K½ |
5½ |
50.9922 |
11 |
L |
5¾ |
51.5907 |
- |
L½ |
6 |
52.1892 |
12 |
M |
6¼ |
52.7877 |
13 |
M½ |
6½ |
53.4600 |
- |
N |
6¾ |
54.1044 |
14 |
N½ |
7 |
54.7428 |
15 |
O |
7 |
55.3812 |
- |
O½ |
7¼ |
56.0196 |
16 |
P |
7½ |
56.6580 |
- |
P½ |
7¾ |
57.2964 |
17 |
O |
8 |
57.9348 |
18 |
Q½ |
8¼ |
58.5732 |
- |
R |
8½ |
59.2116 |
19 |
R½ |
8¾ |
59.8500 |
20 |
S |
9 |
60.4884 |
- |
S½ |
9¼ |
61.1268 |
21 |
T |
9½ |
61.7652 |
22 |
T½ |
9¾ |
62.4026 |
- |
U |
10 |
63.0420 |
23 |
U½ |
10¼ |
63.6804 |
24 |
V |
10½ |
64.3188 |
- |
V½ |
10¾ |
64.8774 |
25 |
W |
11 |
65.4759 |
- |
W½ |
11¼ |
66.0744 |
26 |
X |
11½ |
66.6729 |
- |
X½ |
11¾ |
67.2714 |
- |
Y |
12 |
678699 |
- |
Y½ |
12¼ |
68.4684 |
- |
Z |
12½ |
Please note that any item of jewellery purchased from us is no longer guaranteed by ArtDiplomatic.com when a jeweller not employed by us has worked on it. This applies to stone setting, ring sizing and any major o minor repairs.
RETAILER: As purchaser at ArtDiplomatic.com com you enjoy the preferential prices which are marked at each item, lower than those usual prices in the traditional market.
COLLECTOR If the total annual purchase of Jewellery or Art Work is above 12.000 € it will be applied a reduced rate prices at a 10% for de next purchases and for those which you realize during in following year.
PROFESSIONAL: It is applied for all purchaser who has professional card of Jewellery, Art Work or assimilated.
They can enjoy in all their purchase with an reduction of 10% .
WHOLSALER: Purchasers who make purchases of Jewellery or Art Works for an annual sum higher than 25.000 € may have this qualifying .
They will have a purchase voucher of 2.500 € when the total amount reaches the qualifying of wholesaler.
And will enjoy in all the purchases which they carry out during the year beyond 25.000 € of an reduction of 20%.
They will have the consideration as VIP, being preferentially informed of the offers and opportunities that appear at our website.
We accept American Express, Master-card, Visa or Pay-pal to a maximum amount of ……….
If you have chosen to pay with one of the above options, will fax or e-mail you’re a credit card authorization from to complete and return to us.
The outstanding balance you are welcome to pay by check, cashiers check, bank draught, money order, postal order or wire transfer.
do not accept payments in any other currency than € and US $ .