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Round|Natural|GIA

4.55ct D SI2 Round Natural Diamond

ID • D/SI2 • GIA 18

Certificate GIA 18

Diamond specifications and retailer prices

From €59,179 EUR
$66,115 USD
As of October 31, 2026
Save €7,397 EUR (11%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: €66,576 EUR at Blue Nile · As of October 31, 2026
View at Blue Nile

About this 4.55ct natural round diamond

This 4.55ct natural round sits in the three to five carat band, graded D colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA. Listed at 2 retailers as of October 31, 2026, with a relatively tight 12% spread, which is unusual at this carat range and suggests competitive pricing across the listings. 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

4.55
Carat
D
Color
SI2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 18
Dimensions10.56 × 10.61 × 6.63 mm
L/W Ratio1.00
Top View
10.56 mm10.61 mm4.55 ctD / SI2
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 18
Side View
Table 55.0%CrownGirdle: MED-STKPavilionCulet: NoneDepth 62.6%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 31
Current: €66,576 EUR|Low: €59,179 EUR|High: €68,971 EUR|Avg: €64,272 EUR|-3.5%
Blue Nile
Retailer 2
October 28, 2026
Retailer 2€59,179 EUR
Blue Nile€66,576 EUR

7 data points across 2 retailers

2 retailers€59,179 EUR to €66,576 EUR

A
Cheapest Retailer
-
€59,179 EUR
$66,115 USD
Most Expensive
A
Blue Nile
28988250 · Oct 31
€66,576 EUR
$74,379 USD
View
1 more retailer has this diamond
Prices start from €59,179 EURSave up to €7,397 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.

A
4.55ct Round
€59,179 EUR