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Round|Natural|GIA

1.51ct D SI2 Round Natural Diamond

EX • D/SI2 • GIA 6511657389

Certificate GIA 6511657389

Diamond specifications and retailer prices

From $8,026 CAD
HK$44,800 HKD
As of October 29, 2026
Save $7,275 CAD (48%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $18,736 CAD at NZ Jewellers · As of September 25, 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 D colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6511657389. Listed at 14 retailers as of October 29, 2026, with a 91% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
D
Color
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle36°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 6511657389
Dimensions7.32 × 7.28 × 4.51 mm
L/W Ratio1.01
Top View
7.32 mm7.28 mm1.51 ctD / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6511657389
Side View
Table 59.0%Crown 36°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 62.0%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: $9,758 CAD|Low: $7,900 CAD|High: $15,800 CAD|Avg: $10,077 CAD|-6.7%
Retailer 1
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
October 30, 2026
Retailer 8$8,026 CAD
Retailer 2$8,048 CAD
Retailer 7$8,332 CAD
Retailer 10$8,672 CAD
Retailer 13$9,024 CAD
Retailer 11$9,131 CAD
Retailer 14$9,507 CAD
Retailer 1$9,758 CAD
Retailer 12$9,769 CAD
Retailer 3$10,552 CAD
Retailer 6$10,697 CAD
Retailer 5$11,414 CAD
Retailer 4$11,658 CAD
Retailer 9$15,301 CAD

38 data points across 14 retailers

14 retailers$8,026 CAD to $15,301 CAD

A
Cheapest Retailer
-
$8,026 CAD
HK$44,800 HKD
Retailer 2
-
$8,048 CAD
$5,750 USD
View
Price last confirmed 9 days ago
A
Retailer 3
-
$8,332 CAD
$5,953 USD
View
A
Retailer 4
-
$8,672 CAD
$6,196 USD
View
A
Retailer 5
-
$9,024 CAD
$6,448 USD
View
A
Retailer 6
-
$9,131 CAD
$6,524 USD
View
Final sale: no returns
A
Retailer 7
-
$9,507 CAD
$6,793 USD
View
A
Retailer 8
-
$9,758 CAD
£5,489 GBP
View
A
Retailer 9
-
$9,769 CAD
$6,980 USD
View
A
Retailer 10
-
$10,552 CAD
SGD 10,188 SGD
View
A
Retailer 11
-
$10,697 CAD
A$11,758 AUD
View
B+
Retailer 12
-
$11,414 CAD
$8,155 USD
View
B+
Retailer 13
-
$15,301 CAD
£8,608 GBP
View
Most Expensive
NZ Jewellers
67d7e602-8786-4201-9a30-7eff39b7dc82 · Sep 25
$18,736 CAD
$13,387 USD
View
Price last confirmed 35 days ago
13 more retailers have this diamond
Prices start from $8,026 CADSave up to $7,275 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.

A
1.51ct Round
$8,026 CAD