Round|Natural|GIA

1.51ct J SI1 Round Natural Diamond

EX • J/SI1 • GIA 1533036143

Certificate GIA 1533036143

Diamond specifications and retailer prices

From $5,515 SGD
$4,314 USD
As of November 1, 2026
Save $5,603 SGD (50%) vs most expensive(unlock to see where)
28 retailers carry this diamond
Most expensive: $11,674 SGD 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 November 1, 2026, with a 102% 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
Colour
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: Nov 1
Current: $6,766 SGD|Low: $5,515 SGD|High: $11,251 SGD|Avg: $7,484 SGD|+1.8%
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
November 2, 2026
Retailer 12$5,515 SGD
Retailer 13$5,837 SGD
Retailer 10$5,951 SGD
Retailer 11$6,324 SGD
Retailer 3$6,694 SGD
Retailer 1$6,766 SGD
Retailer 4$7,074 SGD
Retailer 2$7,647 SGD
Retailer 5$7,702 SGD
Retailer 6$7,863 SGD
Retailer 7$8,338 SGD
Retailer 9$8,580 SGD
Retailer 8$11,118 SGD

30 data points across 13 retailers

28 retailers$5,515 SGD to $11,118 SGD

B+
Cheapest Retailer
-
$5,515 SGD
$4,314 USD
B+
Retailer 2
-
$5,837 SGD
$4,566 USD
View
Final sale: no returns
B+
Retailer 3
-
$5,951 SGD
$4,655 USD
View
B+
Retailer 4
-
$6,267 SGD
$4,902 USD
View
Retailer 5
-
$6,324 SGD
$4,947 USD
View
Price last confirmed 45 days ago
B+
Retailer 6
-
$6,324 SGD
$4,947 USD
View
Retailer 7
-
$6,324 SGD
$4,947 USD
View
Price last confirmed 31 days ago
Retailer 8
-
$6,324 SGD
$4,947 USD
View
Price last confirmed 33 days ago
B
Retailer 9
-
$6,694 SGD
$5,236 USD
View
Retailer 10
-
$6,694 SGD
$5,236 USD
View
Price last confirmed 27 days ago
B+
Retailer 11
-
$6,766 SGD
£4,167 GBP
View
B
Retailer 12
-
$6,814 SGD
$5,330 USD
View
B
Retailer 13
-
$6,814 SGD
$5,330 USD
View
B
Retailer 14
-
$7,044 SGD
$5,510 USD
View
Retailer 15
-
$7,074 SGD
A$8,513 AUD
View
Price last confirmed 29 days ago
B+
Retailer 16
-
$7,167 SGD
$5,606 USD
View
Retailer 17
-
$7,297 SGD
$5,708 USD
View
Price last confirmed 41 days ago
Retailer 18
-
$7,297 SGD
$5,708 USD
View
Price last confirmed 12 days ago
Retailer 19
-
$7,297 SGD
$5,708 USD
View
Price last confirmed 34 days ago
B
Retailer 20
-
$7,297 SGD
$5,708 USD
View
B
Retailer 21
-
$7,647 SGD
£4,710 GBP
View
Retailer 22
-
$7,702 SGD
$6,025 USD
View
Price last confirmed 28 days ago
B
Retailer 23
-
$7,863 SGD
€5,858 EUR
View
B
Retailer 24
-
$8,338 SGD
£5,135 GBP
View
B
Retailer 25
-
$8,580 SGD
ZAR 108,428 ZAR
View
B
Retailer 26
-
$11,118 SGD
£6,848 GBP
View
Retailer 27
-
$11,674 SGD
$9,132 USD
View
Price last confirmed 43 days ago
Most Expensive
NZ Jewellers
85863596-3e43-482f-b9f2-4c5df5b95ce2 · Sep 26
$11,674 SGD
$9,132 USD
View
Price last confirmed 36 days ago
27 more retailers have this diamond
Prices start from $5,515 SGDSave up to $5,603 SGD

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
$5,515 SGD