Round|Natural|GIA

1.51ct J SI1 Round Natural Diamond

EX • J/SI1 • GIA 6552974056

Certificate GIA 6552974056

Diamond specifications and retailer prices

From $3,613 USD
As of November 6, 2026
Save $1,687 USD (32%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $5,300 USD at Jared · As of November 6, 2026
View at Jared

About this 1.51ct natural round diamond

This 1.51ct natural round sits in the one-and-a-half to two carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6552974056. Listed at 9 retailers as of November 6, 2026, with prices from $3,613 to $5,300, a $1,687 spread on the same certified stone. Jared lists it at $5,300. 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
J
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle41.4°
OriginNatural
Grading LabGIA
CertificateGIA 6552974056
Dimensions7.27 × 7.32 × 4.56 mm
L/W Ratio1.01
Culet sizeNone
Key to symbols
Crystal, Cloud, Needle, Indented Natural
Top View
7.27 mm7.32 mm1.51 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6552974056
Side View
Table 59.0%Crown 35°Girdle: Slightly ThickPavilion 41.4°Culet: NoneDepth 62.4%

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 6
Current: $5,300 USD|Low: $3,613 USD|High: $5,360 USD|Avg: $4,600 USD|-1.1%
Jared
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 2$3,613 USD
Retailer 7$4,175 USD
Retailer 6$4,458 USD
Retailer 3$4,677 USD
Retailer 8$4,759 USD
Retailer 4$5,130 USD
Retailer 5$5,130 USD
Jared$5,300 USD

45 data points across 8 retailers

9 retailers$3,613 USD to $5,300 USD

A
Cheapest Retailer
-
$3,613 USD
B+
Retailer 2
-
$4,175 USD
View
Final sale: no returns
B+
Retailer 3
-
$4,458 USD
View
B+
Retailer 4
-
$4,633 USD
View
B+
Retailer 5
-
$4,677 USD
View
B+
Retailer 6
-
$4,759 USD
View
B
Retailer 7
-
$5,130 USD
View
B
Retailer 8
-
$5,130 USD
View
Most Expensive
B
Jared
160091726 · Nov 6
$5,300 USD
View
8 more retailers have this diamond
Prices start from $3,613 USDSave up to $1,687 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
$3,613 USD