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Round|Natural|GIA

1.51ct J SI2 Round Natural Diamond

EX • J/SI2 • GIA 1246015618

Certificate GIA 1246015618

Diamond specifications and retailer prices

From $3,700 USD
As of October 30, 2026
Save $5,700 USD (61%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $9,399 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 1246015618. Listed at 17 retailers as of October 30, 2026, with prices from $3,700 to $9,399, a $5,700 spread on the same certified stone. NZ Jewellers lists it at $9,399. 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
FluorescenceStrong
Crown angle36.5°
OriginNatural
Grading LabGIA
CertificateGIA 1246015618
Dimensions7.27 × 7.31 × 4.56 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeNone
Top View
7.27 mm7.31 mm1.51 ctJ / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
CertificateGIA 1246015618
Side View
Table 56.0%Crown 36.5°Girdle: MED-STKPavilionCulet: NoneDepth 62.5%

Caratlytics Score

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

Price History

Last verified: Oct 30
Current: $9,399 USD|Low: $3,700 USD|High: $9,399 USD|Avg: $5,641 USD
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
November 1, 2026
Retailer 4$3,700 USD
Retailer 5$4,440 USD
Retailer 12$4,505 USD
Retailer 6$4,589 USD
Retailer 14$4,773 USD
Retailer 15$4,868 USD
Retailer 8$5,091 USD
Retailer 13$5,091 USD
Retailer 16$5,091 USD
Retailer 3$5,364 USD
Retailer 10$5,447 USD
Retailer 9$5,875 USD
Retailer 7$6,200 USD
Retailer 2$6,333 USD
Retailer 17$6,345 USD
Retailer 11$8,999 USD
NZ Jewellers$9,399 USD

19 data points across 17 retailers

17 retailers$3,700 USD to $9,399 USD

A
Cheapest Retailer
-
$3,700 USD
B+
Retailer 2
-
$4,440 USD
View
B+
Retailer 3
-
$4,505 USD
View
B+
Retailer 4
-
$4,589 USD
View
B+
Retailer 5
-
$4,773 USD
CA$6,629 CAD
View
B+
Retailer 6
-
$4,868 USD
View
B
Retailer 7
-
$5,091 USD
View
B
Retailer 8
-
$5,091 USD
View
B
Retailer 9
-
$5,091 USD
View
B
Retailer 10
-
$5,364 USD
View
B
Retailer 11
-
$5,447 USD
£4,289 GBP
View
B
Retailer 12
-
$5,875 USD
View
Retailer 13
-
$6,200 USD
View
Price last confirmed 18 days ago
B
Retailer 14
-
$6,333 USD
€6,031 EUR
View
B
Retailer 15
-
$6,345 USD
View
B
Retailer 16
-
$8,999 USD
£7,086 GBP
View
Most Expensive
C
NZ Jewellers
539454d3-ef7b-4ddb-ab23-0a64fd815bbf · Oct 30
$9,399 USD
View
16 more retailers have this diamond
Prices start from $3,700 USDSave up to $5,700 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
$3,700 USD