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Round|Natural|GIA

1.28ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 2105839193

Certificate GIA 2105839193

Diamond specifications and retailer prices

From €4,236 EUR
As of November 6, 2026
Save €1,548 EUR (27%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: €5,784 EUR at Yorxs · As of November 6, 2026
View at Yorxs

About this 1.28ct natural round diamond

This 1.28ct natural round sits in the one-and-a-quarter to one-and-a-half carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2105839193. Listed at 2 retailers as of November 6, 2026, with prices from €4,236 to €5,784, a €1,548 spread on the same certified stone. Yorxs lists it at €5,784. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.28
Carat
I
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 2105839193
Dimensions6.95 × 7.00 × 4.32 mm
L/W Ratio1.01
Top View
6.95 mm7.00 mm1.28 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 2105839193
Side View
Table 58.0%CrownGirdle: THN-MEDPavilionCulet: NoneDepth 61.9%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Nov 6
Current: €4,236 EUR|Low: €4,180 EUR|High: €5,839 EUR|Avg: €5,000 EUR|+1.3%
Retailer 1
Yorxs
November 6, 2026
Retailer 1€4,236 EUR
Yorxs€5,784 EUR

23 data points across 2 retailers

2 retailers€4,236 EUR to €5,784 EUR

B
Cheapest Retailer
-
€4,236 EUR
Most Expensive
B
Yorxs
060394 · Nov 6
€5,784 EUR
View
1 more retailer has this diamond
Prices start from €4,236 EURSave up to €1,548 EUR

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

B
1.28ct Round
€4,236 EUR