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Round|Natural|GIA

1.51ct J SI1 Round Natural Diamond

EX • J/SI1 • GIA 6425906823

Certificate GIA 6425906823

Diamond specifications and retailer prices

From $6,705 CAD
HK$37,500 HKD
As of November 1, 2026
Save $8,531 CAD (56%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $15,236 CAD 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 SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6425906823. Listed at 19 retailers as of October 30, 2026, with prices from $6,705 to $15,236, a $8,531 spread on the same certified stone. NZ Jewellers lists it at $15,236. 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 angle36°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 6425906823
Dimensions7.31 × 7.27 × 4.55 mm
L/W Ratio1.01
Top View
7.31 mm7.27 mm1.51 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6425906823
Side View
Table 58.0%Crown 36°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 62.4%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $15,236 CAD|Low: $6,592 CAD|High: $15,236 CAD|Avg: $9,457 CAD
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
Retailer 18
Retailer 19
November 1, 2026
Retailer 15$6,705 CAD
Retailer 18$7,208 CAD
Retailer 5$7,617 CAD
Retailer 16$7,683 CAD
Retailer 6$8,253 CAD
Retailer 8$8,253 CAD
Retailer 19$8,253 CAD
Retailer 13$8,680 CAD
Retailer 7$9,206 CAD
Retailer 9$9,206 CAD
Retailer 11$9,208 CAD
Retailer 10$9,329 CAD
Retailer 17$9,513 CAD
Retailer 3$9,523 CAD
Retailer 2$9,909 CAD
Retailer 4$10,042 CAD
Retailer 14$11,193 CAD
Retailer 12$13,421 CAD
NZ Jewellers$15,236 CAD

43 data points across 19 retailers

19 retailers$6,705 CAD to $15,236 CAD

B+
Cheapest Retailer
-
$6,705 CAD
HK$37,500 HKD
B+
Retailer 2
-
$7,208 CAD
$5,160 USD
View
B
Retailer 3
-
$7,617 CAD
$5,453 USD
View
Final sale: no returns
B
Retailer 4
-
$7,683 CAD
$5,500 USD
View
B
Retailer 5
-
$8,253 CAD
$5,908 USD
View
B
Retailer 6
-
$8,253 CAD
$5,908 USD
View
B
Retailer 7
-
$8,253 CAD
$5,908 USD
View
B
Retailer 8
-
$8,680 CAD
£4,893 GBP
View
B
Retailer 9
-
$9,206 CAD
$6,590 USD
View
B
Retailer 10
-
$9,206 CAD
$6,590 USD
View
Retailer 11
-
$9,208 CAD
A$10,142 AUD
View
Price last confirmed 28 days ago
B
Retailer 12
-
$9,329 CAD
$6,679 USD
View
B
Retailer 13
-
$9,513 CAD
$6,810 USD
View
B
Retailer 14
-
$9,523 CAD
$6,817 USD
View
B
Retailer 15
-
$9,909 CAD
€6,756 EUR
View
Retailer 16
-
$10,042 CAD
$7,189 USD
View
Price last confirmed 9 days ago
B
Retailer 17
-
$11,193 CAD
ZAR 129,441 ZAR
View
B
Retailer 18
-
$13,421 CAD
£7,565 GBP
View
Most Expensive
B
NZ Jewellers
69390dd0-34a5-44b5-99bc-6831c853a27d · Oct 30
$15,236 CAD
$10,907 USD
View
18 more retailers have this diamond
Prices start from $6,705 CADSave up to $8,531 CAD

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
$6,705 CAD