Round|Natural|GIA

1.51ct J SI2 Round Natural Diamond

EX • J/SI2 • GIA 6432628844

Certificate GIA 6432628844

Diamond specifications and retailer prices

From $4,015 USD
As of October 30, 2026
Save $4,484 USD (53%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $8,499 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 6432628844. Listed at 16 retailers as of October 30, 2026, with prices from $4,015 to $8,499, a $4,484 spread on the same certified stone. NZ Jewellers lists it at $8,499. 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
OriginNatural
Grading LabGIA
CertificateGIA 6432628844
Dimensions7.34 × 7.30 × 4.58 mm
L/W Ratio1.01
Top View
7.34 mm7.30 mm1.51 ctJ / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6432628844
Side View
Table 56.0%CrownGirdle: MED-SLIPavilionCulet: NoneDepth 62.5%

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: Oct 30
Current: $8,499 USD|Low: $4,015 USD|High: $8,968 USD|Avg: $5,648 USD|-5.2%
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
Retailer 16
Retailer 17
October 30, 2026
Retailer 4$4,015 USD
Retailer 3$4,101 USD
Retailer 5$4,249 USD
Retailer 6$4,285 USD
Retailer 8$4,540 USD
Retailer 16$4,571 USD
Retailer 13$4,603 USD
Retailer 14$4,603 USD
Retailer 15$4,603 USD
Retailer 10$5,040 USD
Retailer 12$5,312 USD
Retailer 11$5,767 USD
Retailer 7$5,917 USD
Retailer 9$6,525 USD
Retailer 2$6,595 USD
Retailer 17$8,104 USD
NZ Jewellers$8,499 USD

22 data points across 17 retailers

16 retailers$4,015 USD to $8,499 USD

B+
Cheapest Retailer
-
$4,015 USD
B+
Retailer 2
-
$4,101 USD
View
B+
Retailer 3
-
$4,249 USD
View
Final sale: no returns
B+
Retailer 4
-
$4,285 USD
View
B+
Retailer 5
-
$4,540 USD
View
B+
Retailer 6
-
$4,571 USD
View
B+
Retailer 7
-
$4,603 USD
View
B+
Retailer 8
-
$4,603 USD
View
B+
Retailer 9
-
$4,603 USD
View
B+
Retailer 10
-
$5,040 USD
£3,968 GBP
View
B
Retailer 11
-
$5,312 USD
View
B+
Retailer 12
-
$5,767 USD
€5,492 EUR
View
Retailer 13
-
$5,917 USD
View
Price last confirmed 7 days ago
B
Retailer 14
-
$6,595 USD
£5,193 GBP
View
B
Retailer 15
-
$8,104 USD
£6,381 GBP
View
Most Expensive
B
NZ Jewellers
03625e64-819b-4461-92f3-69210ba19a8f · Oct 30
$8,499 USD
View
15 more retailers have this diamond
Prices start from $4,015 USDSave up to $4,484 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.

B+
1.51ct Round
$4,015 USD