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4.51ct H SI1 Round Natural Diamond

EX • H/SI1 • GIA 5221224621

Certificate GIA 5221224621

Diamond specifications and retailer prices

From $76,316 USD
As of October 31, 2026
Save $13,739 USD (15%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: $90,055 USD at Yorxs · As of November 3, 2026
View at Yorxs

About this 4.51ct natural round diamond

This 4.51ct natural round sits in the three to five carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 5221224621. Listed at 5 retailers as of October 31, 2026, with prices from $76,316 to $90,055, a $13,739 spread on the same certified stone. Yorxs lists it at $90,055. 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

4.51
Carat
H
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
Crown angle35.5°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 5221224621
Dimensions10.46 × 10.52 × 6.59 mm
L/W Ratio1.01
Star length50%
Lower girdle80%
Top View
10.46 mm10.52 mm4.51 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 5221224621
Side View
Table 56.0%Crown 35.5°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 62.8%

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 31
Current: $76,316 USD|Low: $76,316 USD|High: $90,593 USD|Avg: $82,794 USD
Retailer 1
Yorxs
November 3, 2026
Retailer 1$76,316 USD
Yorxs$90,055 USD

24 data points across 2 retailers

5 retailers$76,316 USD to $90,055 USD

B+
Cheapest Retailer
-
$76,316 USD
B
Retailer 2
-
$79,060 USD
View
B
Retailer 3
-
$79,060 USD
View
B
Retailer 4
-
$81,700 USD
View
Most Expensive
B
Yorxs
511830329 · Nov 3
$90,055 USD
€85,767 EUR
View
4 more retailers have this diamond
Prices start from $76,316 USDSave up to $13,739 USD

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+
4.51ct Round
$76,316 USD