Round|Natural|IGI

1.51ct J SI1 Round Natural Diamond

EX • J/SI1 • IGI 713545321

Shape and cutting style on the report: Round brilliant

Certificate IGI 713545321

Diamond specifications and retailer prices

From $2,565 USD
As of October 30, 2026
Save $3,421 USD (57%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $5,986 USD at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 1.51ct natural round diamond

This 1.51ct natural round sits in the one-and-a-half to two carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI 713545321. Listed at 20 retailers as of October 30, 2026, with prices from $2,565 to $5,986, a $3,421 spread on the same certified stone. NZ Jewellers lists it at $5,986. 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
J
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle36.6°
Pavilion angle40.8°
OriginNatural
Grading LabIGI
CertificateIGI 713545321
Dimensions7.30 × 7.18 × 4.59 mm
L/W Ratio1.02
Girdle conditionPARTLY FACETED
Culet sizePointed
Top View
7.30 mm7.18 mm1.51 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI 713545321
Side View
Table 57.0%Crown 36.6°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 63.2%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 30
Current: $5,986 USD|Low: $2,422 USD|High: $5,986 USD|Avg: $3,428 USD
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
Retailer 14
Retailer 15
October 31, 2026
Retailer 15$2,565 USD
Retailer 14$2,642 USD
Retailer 5$2,657 USD
Retailer 3$2,805 USD
Retailer 7$2,863 USD
Retailer 4$2,973 USD
Retailer 8$3,097 USD
Retailer 13$3,141 USD
Retailer 6$3,304 USD
Retailer 12$3,346 USD
Retailer 9$3,353 USD
Retailer 10$3,430 USD
Retailer 2$3,520 USD
Retailer 11$4,794 USD
NZ Jewellers$5,986 USD

40 data points across 15 retailers

20 retailers$2,565 USD to $5,986 USD

A
Cheapest Retailer
-
$2,565 USD
A
Retailer 2
-
$2,642 USD
View
Final sale: no returns
A
Retailer 3
-
$2,657 USD
View
Retailer 4
-
$2,729 USD
View
Price last confirmed 83 days ago
A
Retailer 5
-
$2,805 USD
View
Retailer 6
-
$2,863 USD
View
Price last confirmed 36 days ago
A
Retailer 7
-
$2,863 USD
View
A
Retailer 8
-
$2,973 USD
View
A
Retailer 9
-
$3,005 USD
View
A
Retailer 10
-
$3,097 USD
£2,439 GBP
View
B+
Retailer 11
-
$3,141 USD
View
B+
Retailer 12
-
$3,304 USD
View
Retailer 13
-
$3,304 USD
View
Price last confirmed 39 days ago
B+
Retailer 14
-
$3,346 USD
£2,635 GBP
View
A
Retailer 15
-
$3,353 USD
€3,193 EUR
View
A
Retailer 16
-
$3,430 USD
£2,701 GBP
View
A
Retailer 17
-
$3,520 USD
ZAR 56,858 ZAR
View
B+
Retailer 18
-
$4,794 USD
£3,775 GBP
View
Retailer 19
-
$5,986 USD
View
Price last confirmed 36 days ago
Most Expensive
B
NZ Jewellers
d4139d59-90a1-44fe-8074-bf5e2509c708 · Oct 30
$5,986 USD
View
19 more retailers have this diamond
Prices start from $2,565 USDSave up to $3,421 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 Round
$2,565 USD