Round|Natural|GIA

1.51ct J SI2 Round Natural Diamond

EX • J/SI2 • GIA 6442857890

Certificate GIA 6442857890

Diamond specifications and retailer prices

From $3,021 USD
HK$23,600 HKD
As of October 31, 2026
Save $4,069 USD (57%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $7,090 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 SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6442857890. Listed at 17 retailers as of October 30, 2026, with prices from $3,021 to $7,090, a $4,069 spread on the same certified stone. NZ Jewellers lists it at $7,090. 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
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32°
Pavilion angle41.8°
OriginNatural
Grading LabGIA
CertificateGIA 6442857890
Dimensions7.47 × 7.44 × 4.53 mm
L/W Ratio1.00
Star length45%
Lower girdle80%
Top View
7.47 mm7.44 mm1.51 ctJ / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6442857890
Side View
Table 59.0%Crown 32°Girdle: MED-NULPavilion 41.8°Culet: NoneDepth 60.8%

Caratlytics Score

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

Price History

Last verified: Oct 31
Current: $7,090 USD|Low: $2,995 USD|High: $7,154 USD|Avg: $4,413 USD|-0.9%
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 2$3,021 USD
Retailer 5$3,475 USD
Retailer 7$3,590 USD
Retailer 14$3,756 USD
Retailer 4$3,815 USD
Retailer 6$4,070 USD
Retailer 11$4,070 USD
Retailer 13$4,070 USD
Retailer 8$4,137 USD
Retailer 12$4,217 USD
Retailer 9$4,605 USD
Retailer 15$4,648 USD
Retailer 3$4,696 USD
Retailer 10$6,843 USD
NZ Jewellers$7,090 USD

31 data points across 15 retailers

17 retailers$3,021 USD to $7,090 USD

A
Cheapest Retailer
-
$3,021 USD
HK$23,600 HKD
A
Retailer 2
-
$3,475 USD
View
A
Retailer 3
-
$3,590 USD
View
B+
Retailer 4
-
$3,756 USD
View
Final sale: no returns
A
Retailer 5
-
$3,815 USD
SGD 5,155 SGD
View
B+
Retailer 6
-
$3,873 USD
A$5,958 AUD
View
Retailer 7
-
$3,904 USD
View
Price last confirmed 103 days ago
B+
Retailer 8
-
$4,070 USD
View
B+
Retailer 9
-
$4,070 USD
View
B+
Retailer 10
-
$4,070 USD
View
B+
Retailer 11
-
$4,137 USD
£3,258 GBP
View
B+
Retailer 12
-
$4,217 USD
View
B+
Retailer 13
-
$4,605 USD
€4,386 EUR
View
B+
Retailer 14
-
$4,648 USD
£3,660 GBP
View
B+
Retailer 15
-
$4,696 USD
View
B
Retailer 16
-
$6,843 USD
£5,388 GBP
View
Most Expensive
B
NZ Jewellers
a69f990f-567b-4bf7-a2aa-d4fef9127bd3 · Oct 30
$7,090 USD
View
16 more retailers have this diamond
Prices start from $3,021 USDSave up to $4,069 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
$3,021 USD