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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 $3,128 USD
₹297,864 INR
As of October 31, 2026
Save $4,047 USD (56%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $7,175 USD 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 $3,128 to $7,175, a $4,047 spread on the same certified stone. NZ Jewellers lists it at $7,175. 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
Color
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: $4,292 USD|Low: $3,120 USD|High: $6,961 USD|Avg: $4,347 USD|+0.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 1, 2026
Retailer 3$3,128 USD
Retailer 8$3,802 USD
Retailer 5$3,920 USD
Retailer 1$4,292 USD
Retailer 7$4,325 USD
Retailer 4$4,375 USD
Retailer 2$5,062 USD
Retailer 6$6,924 USD

28 data points across 8 retailers

18 retailers$3,128 USD to $7,175 USD

A
Cheapest Retailer
-
$3,128 USD
₹297,864 INR
B+
Retailer 2
-
$3,624 USD
View
B+
Retailer 3
-
$3,802 USD
View
Final sale: no returns
A
Retailer 4
-
$3,920 USD
£3,086 GBP
View
B+
Retailer 5
-
$3,920 USD
View
B+
Retailer 6
-
$4,083 USD
View
B+
Retailer 7
-
$4,118 USD
View
B+
Retailer 8
-
$4,118 USD
View
Retailer 9
-
$4,118 USD
View
Price last confirmed 16 days ago
B+
Retailer 10
-
$4,266 USD
View
B+
Retailer 11
-
$4,292 USD
£3,379 GBP
View
B+
Retailer 12
-
$4,325 USD
View
B+
Retailer 13
-
$4,375 USD
€4,167 EUR
View
B+
Retailer 14
-
$4,530 USD
View
B+
Retailer 15
-
$4,752 USD
View
B+
Retailer 16
-
$5,062 USD
ZAR 81,781 ZAR
View
B
Retailer 17
-
$6,924 USD
£5,452 GBP
View
Most Expensive
B
NZ Jewellers
67829593-4506-4b6e-8a10-140fd6fc2704 · Oct 30
$7,175 USD
View
17 more retailers have this diamond
Prices start from $3,128 USDSave up to $4,047 USD

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
$3,128 USD