Oval|Natural|GIA

1.51ct H SI1 Oval Natural Diamond

EX • H/SI1 • GIA 2427623450

Certificate GIA 2427623450

Diamond specifications and retailer prices

From $9,618 CAD
$6,885 USD
As of October 28, 2026
Save $11,214 CAD (54%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $20,832 CAD at NZ Jewellers · As of October 27, 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 H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2427623450. Listed at 19 retailers as of October 27, 2026, with prices from $9,618 to $20,832, a $11,214 spread on the same certified stone. NZ Jewellers lists it at $20,832. 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
H
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2427623450
Dimensions9.06 × 6.55 × 4.13 mm
L/W Ratio1.38
Top View
9.06 mm6.55 mm1.51 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2427623450
Side View
Table 61.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 63.0%

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: Oct 28
Current: $11,613 CAD|Low: $9,618 CAD|High: $17,569 CAD|Avg: $12,122 CAD|-1.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 29, 2026
Retailer 9$9,618 CAD
Retailer 2$9,753 CAD
Retailer 11$10,393 CAD
Retailer 10$10,503 CAD
Retailer 3$11,457 CAD
Retailer 1$11,613 CAD
Retailer 4$11,805 CAD
Retailer 7$11,810 CAD
Retailer 6$12,899 CAD
Retailer 8$15,032 CAD
Retailer 5$17,451 CAD

35 data points across 11 retailers

19 retailers$9,618 CAD to $20,832 CAD

B+
Cheapest Retailer
-
$9,618 CAD
$6,885 USD
B+
Retailer 2
-
$9,753 CAD
$6,982 USD
View
B
Retailer 3
-
$10,393 CAD
$7,440 USD
View
B
Retailer 4
-
$10,417 CAD
$7,457 USD
View
B
Retailer 5
-
$10,503 CAD
$7,519 USD
View
B+
Retailer 6
-
$11,284 CAD
$8,078 USD
View
B
Retailer 7
-
$11,457 CAD
$8,202 USD
View
B+
Retailer 8
-
$11,613 CAD
£6,546 GBP
View
B
Retailer 9
-
$11,646 CAD
$8,337 USD
View
B+
Retailer 10
-
$11,805 CAD
£6,654 GBP
View
Retailer 11
-
$11,810 CAD
A$13,007 AUD
View
Price last confirmed 7 days ago
B
Retailer 12
-
$12,404 CAD
$8,880 USD
View
B
Retailer 13
-
$12,404 CAD
$8,880 USD
View
B
Retailer 14
-
$12,810 CAD
$9,170 USD
View
B
Retailer 15
-
$12,899 CAD
€8,794 EUR
View
B
Retailer 16
-
$13,021 CAD
$9,321 USD
View
Retailer 17
-
$15,032 CAD
ZAR 173,840 ZAR
View
Price last confirmed 9 days ago
B
Retailer 18
-
$17,451 CAD
£9,837 GBP
View
Most Expensive
B
NZ Jewellers
6af18481-3122-4a53-afef-cf2890653e4f · Oct 27
$20,832 CAD
$14,913 USD
View
18 more retailers have this diamond
Prices start from $9,618 CADSave up to $11,214 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 Oval
$9,618 CAD