Round|Natural|GIA

1.51ct K SI2 Round Natural Diamond

EX • K/SI2 • GIA 6561440326

Certificate GIA 6561440326

Diamond specifications and retailer prices

From $2,057 USD
As of November 5, 2026
Save $1,950 USD (49%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $4,007 USD at Wholesale Diamonds Direct · As of November 4, 2026
View at Wholesale Diamonds Direct

About this 1.51ct natural round diamond

This 1.51ct natural round sits in the one-and-a-half to two carat band, graded K colour (faint-tinted) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6561440326. Listed at 9 retailers as of November 4, 2026, with prices from $2,057 to $4,007, a $1,950 spread on the same certified stone. Wholesale Diamonds Direct lists it at $4,007. 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

1.51
Carat
K
Color
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle34°
Pavilion angle41.4°
OriginNatural
Grading LabGIA
CertificateGIA 6561440326
Dimensions7.33 × 4.55 × 4.55 mm
L/W Ratio1.61
Culet sizeNone
Top View
7.33 mm4.55 mm1.51 ctK / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6561440326
Side View
Table 57.0%Crown 34°Girdle: MED-STKPavilion 41.4°Culet: NoneDepth 61.9%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: $2,057 USD|Low: $2,046 USD|High: $4,535 USD|Avg: $3,040 USD|-2.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Wholesale Diamonds Direct
November 5, 2026
Retailer 1$2,057 USD
Retailer 7$2,445 USD
Retailer 4$2,557 USD
Retailer 6$2,557 USD
Retailer 3$2,593 USD
Retailer 2$2,932 USD
Retailer 5$3,041 USD
Retailer 8$3,198 USD
Wholesale Diamonds Direct$4,007 USD

18 data points across 9 retailers

9 retailers$2,057 USD to $4,007 USD

A
Cheapest Retailer
-
$2,057 USD
A
Retailer 2
-
$2,445 USD
View
A
Retailer 3
-
$2,557 USD
View
A
Retailer 4
-
$2,557 USD
View
A
Retailer 5
-
$2,593 USD
View
A
Retailer 6
-
$2,932 USD
View
A
Retailer 7
-
$3,041 USD
View
Retailer 8
-
$3,198 USD
View
Price last confirmed 11 days ago
Most Expensive
B+
Wholesale Diamonds Direct
570704302 · Nov 4
$4,007 USD
View
8 more retailers have this diamond
Prices start from $2,057 USDSave up to $1,950 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.

A
1.51ct Round
$2,057 USD