Round|Natural|GIA

1.51ct J SI1 Round Natural Diamond

EX • J/SI1 • GIA 6501583878

Certificate GIA 6501583878

Diamond specifications and retailer prices

From $8,151 CAD
$5,835 USD
As of October 25, 2026
Save $9,227 CAD (53%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $17,377 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 6501583878. Listed at 18 retailers as of October 25, 2026, with prices from $8,151 to $17,377, a $9,227 spread on the same certified stone. NZ Jewellers lists it at $17,377. 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 angle33.5°
Pavilion angle41.8°
OriginNatural
Grading LabGIA
CertificateGIA 6501583878
Dimensions7.35 × 7.30 × 4.60 mm
L/W Ratio1.01
Top View
7.35 mm7.30 mm1.51 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6501583878
Side View
Table 57.0%Crown 33.5°Girdle: MED-STKPavilion 41.8°Culet: NoneDepth 62.8%

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 25
Current: $12,447 CAD|Low: $8,151 CAD|High: $14,654 CAD|Avg: $10,562 CAD|-0.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 30, 2026
Retailer 9$8,151 CAD
Retailer 11$8,210 CAD
Retailer 10$8,731 CAD
Retailer 2$9,558 CAD
Retailer 4$9,730 CAD
Retailer 3$9,963 CAD
Retailer 8$10,084 CAD
Retailer 5$11,354 CAD
Retailer 1$12,447 CAD
Retailer 7$12,652 CAD
Retailer 6$14,558 CAD

35 data points across 11 retailers

18 retailers$8,151 CAD to $17,377 CAD

B+
Cheapest Retailer
-
$8,151 CAD
$5,835 USD
B+
Retailer 2
-
$8,210 CAD
$5,877 USD
View
B
Retailer 3
-
$8,689 CAD
$6,220 USD
View
B
Retailer 4
-
$8,731 CAD
$6,250 USD
View
B
Retailer 5
-
$9,261 CAD
$6,630 USD
View
B
Retailer 6
-
$9,412 CAD
$6,738 USD
View
B
Retailer 7
-
$9,558 CAD
$6,842 USD
View
B
Retailer 8
-
$9,730 CAD
£5,484 GBP
View
B
Retailer 9
-
$9,963 CAD
$7,132 USD
View
Retailer 10
-
$10,084 CAD
A$11,106 AUD
View
Price last confirmed 9 days ago
Retailer 11
-
$10,861 CAD
$7,775 USD
View
Price last confirmed 54 days ago
B
Retailer 12
-
$10,861 CAD
$7,775 USD
View
B
Retailer 13
-
$11,354 CAD
€7,741 EUR
View
Retailer 14
-
$11,449 CAD
$8,196 USD
View
Price last confirmed 8 days ago
B
Retailer 15
-
$12,447 CAD
£7,016 GBP
View
B
Retailer 16
-
$12,652 CAD
ZAR 146,321 ZAR
View
B
Retailer 17
-
$14,558 CAD
£8,206 GBP
View
Most Expensive
B
NZ Jewellers
f4d4f422-75b9-49b3-bb55-82b45c3d718f · Oct 30
$17,377 CAD
$12,440 USD
View
17 more retailers have this diamond
Prices start from $8,151 CADSave up to $9,227 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
$8,151 CAD