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Oval|Natural|IGI

1.51ct L SI1 Oval Natural Diamond

VG • L/SI1 • IGI 689598699

Shape and cutting style on the report: Oval brilliant

Certificate IGI 689598699

Diamond specifications and retailer prices

From $2,870 AUD
As of November 4, 2026
Save $3,774 AUD (57%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $6,644 AUD at NZ Jewellers · As of November 2, 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 L colour (faint-tinted) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI 689598699. Listed at 13 retailers as of November 2, 2026, with prices from $2,870 to $6,644, a $3,774 spread on the same certified stone. NZ Jewellers lists it at $6,644. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.51
Carat
L
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle43.7°
Pavilion angle40.1°
OriginNatural
Grading LabIGI
CertificateIGI 689598699
Dimensions8.43 × 6.34 × 4.19 mm
L/W Ratio1.33
Girdle conditionFaceted
Culet sizeNone
Top View
8.43 mm6.34 mm1.51 ctL / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI 689598699
Side View
Table 59.0%Crown 43.7°Girdle: STK-THKPavilion 40.1°Culet: NoneDepth 66.1%

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 4
Current: $6,644 AUD|Low: $2,870 AUD|High: $6,644 AUD|Avg: $3,603 AUD
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
November 3, 2026
Retailer 12$2,870 AUD
Retailer 11$3,048 AUD
Retailer 6$3,141 AUD
Retailer 10$3,177 AUD
Retailer 13$3,177 AUD
Retailer 5$3,202 AUD
Retailer 8$3,324 AUD
Retailer 9$3,339 AUD
Retailer 4$3,379 AUD
Retailer 3$3,666 AUD
Retailer 7$3,905 AUD
Retailer 2$3,951 AUD
NZ Jewellers$6,644 AUD

42 data points across 13 retailers

13 retailers$2,870 AUD to $6,644 AUD

B+
Cheapest Retailer
-
$2,870 AUD
B+
Retailer 2
-
$3,048 AUD
View
B+
Retailer 3
-
$3,141 AUD
View
Retailer 4
-
$3,177 AUD
View
Price last confirmed 8 days ago
B+
Retailer 5
-
$3,177 AUD
View
B+
Retailer 6
-
$3,202 AUD
View
B+
Retailer 7
-
$3,324 AUD
View
B+
Retailer 8
-
$3,339 AUD
View
B+
Retailer 9
-
$3,379 AUD
View
B+
Retailer 10
-
$3,666 AUD
View
B+
Retailer 11
-
$3,905 AUD
View
B+
Retailer 12
-
$3,951 AUD
View
Most Expensive
C
NZ Jewellers
0ea168ee-236b-4412-b8dc-333e2e85b0be · Nov 2
$6,644 AUD
$4,565 USD
View
12 more retailers have this diamond
Prices start from $2,870 AUDSave up to $3,774 AUD

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
$2,870 AUD