Round|Natural|GIA

1.51ct J SI1 Round Natural Diamond

EX • J/SI1 • GIA 1533036143

Certificate GIA 1533036143

Diamond specifications and retailer prices

From $4,314 USD
As of October 30, 2026
Save $4,429 USD (51%) vs most expensive(unlock to see where)
28 retailers carry this diamond
Most expensive: $9,132 USD at NZ Jewellers · As of September 26, 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 GIA 1533036143. Listed at 28 retailers as of October 29, 2026, with a 103% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
SymmetryExcellent
FluorescenceNone
Crown angle33.5°
Pavilion angle41.8°
OriginNatural
Grading LabGIA
CertificateGIA 1533036143
Dimensions7.32 × 7.37 × 4.56 mm
L/W Ratio1.01
Girdle conditionSlightly Thick
Key to symbols
Knot, Feather, Natural
Top View
7.32 mm7.37 mm1.51 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1533036143
Side View
Table 59.0%Crown 33.5°Girdle: THN-STKPavilion 41.8°Culet: NoneDepth 62.0%

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: $5,293 USD|Low: $4,314 USD|High: $8,801 USD|Avg: $5,865 USD|+1.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
October 31, 2026
Retailer 12$4,314 USD
Retailer 13$4,566 USD
Retailer 9$4,655 USD
Retailer 11$4,947 USD
Retailer 3$5,236 USD
Retailer 1$5,293 USD
Retailer 4$5,533 USD
Retailer 2$5,982 USD
Retailer 5$6,025 USD
Retailer 6$6,179 USD
Retailer 7$6,541 USD
Retailer 10$6,649 USD
Retailer 8$8,743 USD

30 data points across 13 retailers

28 retailers$4,314 USD to $8,743 USD

B+
Cheapest Retailer
-
$4,314 USD
B+
Retailer 2
-
$4,566 USD
View
Final sale: no returns
B+
Retailer 3
-
$4,655 USD
View
B+
Retailer 4
-
$4,902 USD
View
Retailer 5
-
$4,947 USD
View
Price last confirmed 44 days ago
B+
Retailer 6
-
$4,947 USD
View
Retailer 7
-
$4,947 USD
View
Price last confirmed 30 days ago
Retailer 8
-
$4,947 USD
View
Price last confirmed 31 days ago
B
Retailer 9
-
$5,236 USD
View
Retailer 10
-
$5,236 USD
View
Price last confirmed 26 days ago
B+
Retailer 11
-
$5,293 USD
£4,167 GBP
View
B
Retailer 12
-
$5,330 USD
View
B
Retailer 13
-
$5,330 USD
View
B
Retailer 14
-
$5,510 USD
View
Retailer 15
-
$5,533 USD
A$8,513 AUD
View
Price last confirmed 27 days ago
B+
Retailer 16
-
$5,606 USD
View
Retailer 17
-
$5,708 USD
View
Price last confirmed 39 days ago
Retailer 18
-
$5,708 USD
View
Price last confirmed 10 days ago
Retailer 19
-
$5,708 USD
View
Price last confirmed 32 days ago
B
Retailer 20
-
$5,708 USD
View
B
Retailer 21
-
$5,982 USD
£4,710 GBP
View
Retailer 22
-
$6,025 USD
View
Price last confirmed 26 days ago
B
Retailer 23
-
$6,179 USD
€5,885 EUR
View
B
Retailer 24
-
$6,541 USD
£5,151 GBP
View
B
Retailer 25
-
$6,649 USD
ZAR 107,414 ZAR
View
B
Retailer 26
-
$8,743 USD
£6,884 GBP
View
Retailer 27
-
$9,132 USD
View
Price last confirmed 41 days ago
Most Expensive
NZ Jewellers
85863596-3e43-482f-b9f2-4c5df5b95ce2 · Sep 26
$9,132 USD
View
Price last confirmed 34 days ago
27 more retailers have this diamond
Prices start from $4,314 USDSave up to $4,429 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
$4,314 USD