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1.51ct J SI2 Round Natural Diamond

EX • J/SI2 • GIA 1415840386

Certificate GIA 1415840386

Diamond specifications and retailer prices

From $5,555 USD
As of October 30, 2026
Save $6,542 USD (54%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $12,097 USD at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

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 SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1415840386. Listed at 19 retailers as of October 30, 2026, with prices from $5,555 to $12,097, a $6,542 spread on the same certified stone. NZ Jewellers lists it at $12,097. 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
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 1415840386
Dimensions7.35 × 7.34 × 4.49 mm
L/W Ratio1.00
Culet sizeNone
Top View
7.35 mm7.34 mm1.51 ctJ / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1415840386
Side View
Table 60.0%Crown 36°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 61.2%

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 30
Current: $12,097 USD|Low: $5,449 USD|High: $12,567 USD|Avg: $7,556 USD|-3.7%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
October 30, 2026
Retailer 12$5,490 USD
Retailer 16$5,555 USD
Retailer 4$5,714 USD
Retailer 5$6,048 USD
Retailer 14$6,049 USD
Retailer 17$6,451 USD
Retailer 8$6,553 USD
Retailer 15$6,654 USD
Retailer 10$6,890 USD
Retailer 6$7,190 USD
Retailer 13$7,190 USD
Retailer 7$7,430 USD
Retailer 2$7,495 USD
Retailer 9$7,561 USD
Retailer 3$7,971 USD
Retailer 11$10,135 USD
NZ Jewellers$12,097 USD

41 data points across 17 retailers

19 retailers$5,555 USD to $12,097 USD

Retailer 1
-
$5,490 USD
Price last confirmed 13 days ago
B+
Retailer 2
-
$5,555 USD
View
B+
Retailer 3
-
$5,714 USD
View
B
Retailer 4
-
$5,935 USD
A$9,131 AUD
View
Retailer 5
-
$5,993 USD
View
Price last confirmed 19 days ago
B
Retailer 6
-
$6,048 USD
View
Final sale: no returns
B
Retailer 7
-
$6,049 USD
View
B
Retailer 8
-
$6,451 USD
View
B
Retailer 9
-
$6,553 USD
View
B
Retailer 10
-
$6,654 USD
View
B
Retailer 11
-
$6,890 USD
£5,425 GBP
View
B
Retailer 12
-
$7,190 USD
View
B
Retailer 13
-
$7,190 USD
View
B
Retailer 14
-
$7,430 USD
View
B
Retailer 15
-
$7,495 USD
€7,138 EUR
View
B
Retailer 16
-
$7,561 USD
View
Retailer 17
-
$7,971 USD
View
Price last confirmed 8 days ago
B
Retailer 18
-
$10,135 USD
£7,980 GBP
View
Most Expensive
B
NZ Jewellers
a0390c18-3dae-4db9-8e16-bdab1875caac · Oct 30
$12,097 USD
View
18 more retailers have this diamond
Prices start from $5,555 USDSave up to $6,542 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
$5,555 USD