Oval|Natural|GIA

1.51ct D SI2 Oval Natural Diamond

EX • D/SI2 • GIA 6525797508

Certificate GIA 6525797508

Diamond specifications and retailer prices

From $7,891 CAD
$5,638 USD
As of October 28, 2026
Save $5,798 CAD (42%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $15,457 CAD at NZ Jewellers · As of September 30, 2026
View at NZ Jewellers

About this 1.51ct natural oval diamond

This 1.51ct natural oval 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 stated by the retailer rather than the lab and certified by GIA 6525797508. Listed at 16 retailers as of October 28, 2026, with a 73% 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 (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.83°
Pavilion angle40.38°
OriginNatural
Grading LabGIA
CertificateGIA 6525797508
Dimensions8.88 × 6.35 × 4.11 mm
L/W Ratio1.40
Top View
8.88 mm6.35 mm1.51 ctD / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6525797508
Side View
Table 59.0%Crown 37.83°Girdle: STK-THKPavilion 40.38°Culet: NoneDepth 64.7%

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 28
Current: $8,735 CAD|Low: $7,820 CAD|High: $13,781 CAD|Avg: $9,318 CAD|-0.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 30, 2026
Retailer 8$7,891 CAD
Retailer 5$8,013 CAD
Retailer 6$8,060 CAD
Retailer 7$8,531 CAD
Retailer 1$8,735 CAD
Retailer 2$8,845 CAD
Retailer 4$10,081 CAD
Retailer 3$13,688 CAD

43 data points across 8 retailers

16 retailers$7,891 CAD to $13,688 CAD

A
Cheapest Retailer
-
$7,891 CAD
$5,638 USD
A
Retailer 2
-
$8,013 CAD
$5,725 USD
View
A
Retailer 3
-
$8,060 CAD
$5,759 USD
View
A
Retailer 4
-
$8,531 CAD
$6,095 USD
View
Final sale: no returns
Retailer 5
-
$8,531 CAD
$6,095 USD
View
Price last confirmed 22 days ago
A
Retailer 6
-
$8,735 CAD
£4,914 GBP
View
A
Retailer 7
-
$8,845 CAD
£4,976 GBP
View
Retailer 8
-
$9,242 CAD
$6,603 USD
View
Price last confirmed 38 days ago
Retailer 9
-
$9,242 CAD
$6,603 USD
View
Price last confirmed 22 days ago
Retailer 10
-
$9,384 CAD
$6,705 USD
View
Price last confirmed 30 days ago
A
Retailer 11
-
$10,081 CAD
€6,860 EUR
View
Retailer 12
-
$10,664 CAD
$7,619 USD
View
Price last confirmed 38 days ago
Retailer 13
-
$10,664 CAD
$7,619 USD
View
Price last confirmed 21 days ago
B+
Retailer 14
-
$13,688 CAD
£7,701 GBP
View
Retailer 15
-
$15,457 CAD
$11,044 USD
View
Price last confirmed 34 days ago
Most Expensive
NZ Jewellers
c6a2ddb8-3355-498d-8c6d-da67c61f5cfe · Sep 30
$15,457 CAD
$11,044 USD
View
Price last confirmed 29 days ago
15 more retailers have this diamond
Prices start from $7,891 CADSave up to $5,798 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 Oval
$7,891 CAD