Round|Natural|GIA

1.51ct J SI1 Round Natural Diamond

EX • J/SI1 • GIA 1246049035

Certificate GIA 1246049035

Diamond specifications and retailer prices

From $4,537 USD
As of November 7, 2026
Save $4,143 USD (48%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $8,680 USD at MOH London · As of November 4, 2026
View at MOH London

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 1246049035. Listed at 22 retailers as of November 4, 2026, with prices from $4,537 to $8,680, a $4,143 spread on the same certified stone. MOH London lists it at $8,680. 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 angle34°
Pavilion angle41.6°
OriginNatural
Grading LabGIA
CertificateGIA 1246049035
Dimensions7.26 × 7.32 × 4.58 mm
L/W Ratio1.01
Culet sizeNone
Key to symbols
Cloud, Crystal, Feather, Needle, Natural
Top View
7.26 mm7.32 mm1.51 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1246049035
Side View
Table 57.0%Crown 34°Girdle: THN-STKPavilion 41.6°Culet: NoneDepth 62.9%

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: Nov 7
Current: $8,680 USD|Low: $4,537 USD|High: $8,750 USD|Avg: $5,752 USD|-0.8%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
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Retailer 11
Retailer 12
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Retailer 19
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Retailer 22
Retailer 23
November 7, 2026
Retailer 15$4,537 USD
Retailer 10$4,667 USD
Retailer 11$4,668 USD
Retailer 14$4,726 USD
Retailer 3$4,778 USD
Retailer 9$4,939 USD
Retailer 8$5,015 USD
Retailer 2$5,174 USD
Retailer 16$5,203 USD
Retailer 7$5,292 USD
Retailer 6$5,446 USD
Retailer 12$5,602 USD
Retailer 22$5,638 USD
Retailer 20$5,668 USD
Retailer 19$5,684 USD
Retailer 21$5,912 USD
Retailer 23$6,269 USD
Retailer 18$6,282 USD
Retailer 17$7,063 USD
Retailer 4$7,207 USD
Retailer 13$7,360 USD
Retailer 5$8,557 USD
MOH London$8,680 USD

36 data points across 23 retailers

22 retailers$4,537 USD to $8,680 USD

B+
Cheapest Retailer
-
$4,537 USD
B+
Retailer 2
-
$4,667 USD
View
B+
Retailer 3
-
$4,668 USD
View
B+
Retailer 4
-
$4,726 USD
View
B+
Retailer 5
-
$4,778 USD
View
B+
Retailer 6
-
$4,939 USD
View
Final sale: no returns
B+
Retailer 7
-
$5,015 USD
View
B+
Retailer 8
-
$5,174 USD
View
B
Retailer 9
-
$5,292 USD
View
B
Retailer 10
-
$5,446 USD
View
B+
Retailer 11
-
$5,602 USD
View
B+
Retailer 12
-
$5,638 USD
View
B+
Retailer 13
-
$5,668 USD
View
B
Retailer 14
-
$5,684 USD
View
B
Retailer 15
-
$5,912 USD
View
B
Retailer 16
-
$6,269 USD
View
B
Retailer 17
-
$6,282 USD
View
B
Retailer 18
-
$7,063 USD
View
B
Retailer 19
-
$7,207 USD
View
B
Retailer 20
-
$7,360 USD
View
B
Retailer 21
-
$8,557 USD
View
Most Expensive
B
MOH London
D3308CEC9 · Nov 4
$8,680 USD
£6,835 GBP
View
21 more retailers have this diamond
Prices start from $4,537 USDSave up to $4,143 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+
1.51ct Round
$4,537 USD