Round|Natural|GIA

2.09ct D SI1 Round Natural Diamond

ID • D/SI1 • GIA 5

Certificate GIA 5

Diamond specifications and retailer prices

From €19,816 EUR
$22,139 USD
As of October 30, 2026
Save €3,789 EUR (16%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: €23,605 EUR at Blue Nile · As of October 31, 2026
View at Blue Nile

About this 2.09ct natural round diamond

This 2.09ct natural round sits in the two to three carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA. Listed at 3 retailers as of October 30, 2026, with prices from €19,816 to €23,605, a €3,789 spread on the same certified stone. Blue Nile lists it at €23,605. 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

2.09
Carat
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 5
Dimensions8.15 × 8.19 × 5.09 mm
L/W Ratio1.00
Top View
8.15 mm8.19 mm2.09 ctD / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 5
Side View
Table 56.0%CrownGirdle: MED-STKPavilionCulet: NoneDepth 62.3%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: €23,605 EUR|Low: €19,621 EUR|High: €23,605 EUR|Avg: €21,494 EUR
Blue Nile
Retailer 2
Retailer 3
September 23, 2026
Retailer 2€19,816 EUR
Retailer 3€21,271 EUR
Blue Nile€23,605 EUR

3 data points across 3 retailers

3 retailers€19,816 EUR to €23,605 EUR

B+
Cheapest Retailer
-
€19,816 EUR
$22,139 USD
B+
Retailer 2
-
€21,271 EUR
$23,764 USD
View
Most Expensive
B
Blue Nile
12447788 · Oct 31
€23,605 EUR
$26,372 USD
View
2 more retailers have this diamond
Prices start from €19,816 EURSave up to €3,789 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+
2.09ct Round
€19,816 EUR