Natural Diamond Pair · 0.360 ct TCW · Round Brilliant · Blue

$332.28

Pair of natural, color-treated Diamonds with a combined weight of 0.36 ct, each weighing 0.18 ct and fashioned in classic Round Brilliant cuts. Both display a vivid Fancy Deep Greenish Blue colour and are graded I1 clarity, with Good cut and symmetry, Fair to Good polish, and no fluorescence. ALGT certified, sealed and supplied with the original grading report.

1 in stock

NGB Reference: NGB-000335 SKU: FA-DIA025GB-355-135 Category: Brand:
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This matched pair of natural Diamonds has a combined weight of 0.36 carat, with each diamond weighing 0.18 ct. Both stones are fashioned in classic Round Brilliant cuts and are accompanied by ALGT Diamond Grading Report No. 74355135.

The pair displays an intense Fancy Deep Greenish Blue colour. ALGT identifies both gemstones as natural Diamonds, while also confirming that the colour origin is treated. According to the laboratory comments, the diamonds have undergone one or more processes intended to improve their colour. The exact treatment method is not specified on the supplied grading information and is therefore not further attributed.

The first diamond measures approximately 3.61–3.68 × 2.11 mm, while the second measures approximately 3.52–3.60 × 2.11 mm. Their closely comparable dimensions and equal individual weights provide a well-matched presentation suitable for paired jewellery designs.

Both diamonds are graded I1 clarity, indicating visible natural inclusions and internal characteristics that influence internal cleanliness and brilliance while still allowing the stones to retain a recognisable transparent diamond appearance.

The cut grade is Good, supporting a balanced overall facet presentation. Polish ranges from Fair to Good, while symmetry is graded Good. The girdles are described as Thick to Very Thick, contributing additional weight and depth relative to the visible face-up spread.

Neither diamond shows fluorescence under the conditions recorded by the grading laboratory.

The pair is supplied sealed and accompanied by the original ALGT grading certificate, preserving the direct link between the gemstones and their laboratory documentation.

With their strong greenish-blue colour, closely matched dimensions and classic Round Brilliant cuts, this 0.36 tcw pair of natural, color-treated Diamonds offers a striking option for custom earrings, paired jewellery designs or collectors seeking vividly coloured documented diamonds.

Overall Score: 86.0/100

NGB Grade: Very Good

Quality Evaluation

Color18.0/20
Clarity17.0/20
Cut17.0/20
Optical Performance17.0/20
Overall Appeal17.0/20

Evaluation Notes

Lab-certified natural Diamond pair with fancy deep greenish blue coloration and recorded clarity I1 / I1. The laboratory cutting, polish and symmetry observations were considered alongside colour presentation, internal character and overall optical appearance. The laboratory documentation records natural colour/origin without a colour-treatment indication.
This pair of natural, color-treated Diamonds presents a **very good overall gemmological quality profile**, combining a vivid **Fancy Deep Greenish Blue** appearance with well-matched carat weights and closely comparable dimensions. Both stones are graded **I1 clarity**, with visible natural inclusions that reduce internal cleanliness and brilliance but remain broadly consistent across the pair. The **Good cut and symmetry** support a balanced face-up presentation, while the **Fair to Good polish** and **Thick to Very Thick girdles** slightly limit overall refinement and spread efficiency. The strong colour presence, close matching and documented natural-diamond identity contribute significantly to the pair’s appeal, supporting an overall **86/100** assessment.

Species

Diamond

Gemstone Variety

Diamond

Color

Blue

Shape

Round

Cut

Brilliant Cut

Transparency

Transparent

Gemological Properties

Carat Weight0.36 ct
Dimensions3.61 - 3.68 × 2.11 mm / 3.52 - 3.60 × 2.11 mm
TransparencyTransparent
ClarityI1 / I1
Refractive Index2.417
Specific Gravity3.52
Hardness10 Mohs
BirefringenceNone (isotropic)
Crystal SystemCubic
Dispersion0.044
LusterAdamantine
Color DescriptionFancy Deep Greenish Blue
Transparency NotesTransparent faceted diamond material; visibility of internal characteristics corresponds to the laboratory clarity grades recorded for the individual stones in this pair.
Natural CharacteristicsNatural diamond internal characteristics are documented by the accompanying laboratory grading report. Any inclusions, feathers, crystals, cavities or other identification features remain part of the individual natural stone.

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