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Oval|Natural|IGI

1.51ct I SI1 Oval Natural Diamond

VG • I/SI1 • IGI 794652789

Shape and cutting style on the report: Oval brilliant

Certificate IGI 794652789

Diamond specifications and retailer prices

From $4,452 AUD
₹297,864 INR
As of October 31, 2026
Save $5,762 AUD (56%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $10,214 AUD at NZ Jewellers · As of October 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 I colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI 794652789. Listed at 18 retailers as of October 30, 2026, with prices from $4,452 to $10,214, a $5,762 spread on the same certified stone. NZ Jewellers lists it at $10,214. 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
I
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle41°
Pavilion angle39.7°
OriginNatural
Grading LabIGI
CertificateIGI 794652789
Dimensions9.86 × 6.09 × 3.89 mm
L/W Ratio1.62
Girdle conditionFaceted
Culet sizePointed
Top View
9.86 mm6.09 mm1.51 ctI / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 794652789
Side View
Table 60.0%Crown 41°Girdle: STK-THKPavilion 39.7°Culet: NoneDepth 63.9%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: $6,248 AUD|Low: $4,441 AUD|High: $9,909 AUD|Avg: $6,199 AUD|+0.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 2, 2026
Retailer 5$4,452 AUD
Retailer 8$5,413 AUD
Retailer 2$5,563 AUD
Retailer 3$6,110 AUD
Retailer 7$6,157 AUD
Retailer 1$6,248 AUD
Retailer 4$7,207 AUD
Retailer 6$9,857 AUD

29 data points across 8 retailers

18 retailers$4,452 AUD to $10,214 AUD

A
Cheapest Retailer
-
$4,452 AUD
₹297,864 INR
B+
Retailer 2
-
$5,159 AUD
$3,624 USD
View
B+
Retailer 3
-
$5,413 AUD
$3,802 USD
View
Final sale: no returns
A
Retailer 4
-
$5,563 AUD
£3,077 GBP
View
B+
Retailer 5
-
$5,581 AUD
$3,920 USD
View
B+
Retailer 6
-
$5,813 AUD
$4,083 USD
View
B+
Retailer 7
-
$5,862 AUD
$4,118 USD
View
B+
Retailer 8
-
$5,862 AUD
$4,118 USD
View
Retailer 9
-
$5,862 AUD
$4,118 USD
View
Price last confirmed 17 days ago
B+
Retailer 10
-
$6,073 AUD
$4,266 USD
View
B+
Retailer 11
-
$6,110 AUD
£3,379 GBP
View
B+
Retailer 12
-
$6,157 AUD
$4,325 USD
View
B+
Retailer 13
-
$6,248 AUD
€4,180 EUR
View
B+
Retailer 14
-
$6,449 AUD
$4,530 USD
View
B+
Retailer 15
-
$6,765 AUD
$4,752 USD
View
B+
Retailer 16
-
$7,207 AUD
ZAR 81,781 ZAR
View
B
Retailer 17
-
$9,857 AUD
£5,452 GBP
View
Most Expensive
B
NZ Jewellers
67829593-4506-4b6e-8a10-140fd6fc2704 · Oct 30
$10,214 AUD
$7,175 USD
View
17 more retailers have this diamond
Prices start from $4,452 AUDSave up to $5,762 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.

A
1.51ct Oval
$4,452 AUD