Round|Natural|GIA

4.06ct K SI1 Round Natural Diamond

EX • K/SI1 • GIA 2

Certificate GIA 2

Diamond specifications and retailer prices

From $46,798 USD
As of November 4, 2026
Save $7,148 USD (13%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: $53,946 USD at Blue Nile · As of November 5, 2026
View at Blue Nile

About this 4.06ct natural round diamond

This 4.06ct natural round sits in the three to five carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA. Listed at 3 retailers as of November 4, 2026, with prices from $46,798 to $53,946, a $7,148 spread on the same certified stone. Blue Nile lists it at $53,946. 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

4.06
Carat
K
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2
Dimensions10.21 × 10.29 × 6.28 mm
L/W Ratio1.01
Top View
10.21 mm10.29 mm4.06 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2
Side View
Table 59.0%CrownGirdle: Slightly ThickPavilionCulet: NoneDepth 61.2%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Nov 4
Current: $53,946 USD|Low: $46,798 USD|High: $53,946 USD|Avg: $49,379 USD
Blue Nile
Retailer 2
Retailer 3
September 26, 2026
Retailer 2$46,798 USD
Retailer 3$49,677 USD
Blue Nile$53,946 USD

2 data points across 3 retailers

3 retailers$46,798 USD to $53,946 USD

B
Cheapest Retailer
-
$46,798 USD
B
Retailer 2
-
$49,677 USD
View
Most Expensive
B
Blue Nile
14125609 · Nov 5
$53,946 USD
View
2 more retailers have this diamond
Prices start from $46,798 USDSave up to $7,148 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
4.06ct Round
$46,798 USD