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Round|Natural|GIA

1.51ct J SI1 Round Natural Diamond

EX • J/SI1 • GIA 6501583878

Certificate GIA 6501583878

Diamond specifications and retailer prices

From $7,462 SGD
$5,835 USD
As of November 1, 2026
Save $8,447 SGD (53%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $15,910 SGD 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 GIA 6501583878. Listed at 18 retailers as of October 30, 2026, with prices from $7,462 to $15,910, a $8,447 spread on the same certified stone. NZ Jewellers lists it at $15,910. 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 6501583878
Dimensions7.35 × 7.30 × 4.60 mm
L/W Ratio1.01
Top View
7.35 mm7.30 mm1.51 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6501583878
Side View
Table 57.0%Crown 33.5°Girdle: MED-STKPavilion 41.8°Culet: NoneDepth 62.8%

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: $11,361 SGD|Low: $7,462 SGD|High: $13,416 SGD|Avg: $9,669 SGD|-0.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 2, 2026
Retailer 9$7,462 SGD
Retailer 11$7,516 SGD
Retailer 10$7,993 SGD
Retailer 2$8,750 SGD
Retailer 4$8,908 SGD
Retailer 3$9,121 SGD
Retailer 8$9,233 SGD
Retailer 6$10,348 SGD
Retailer 1$11,361 SGD
Retailer 7$11,687 SGD
Retailer 5$13,257 SGD

36 data points across 11 retailers

18 retailers$7,462 SGD to $15,910 SGD

B+
Cheapest Retailer
-
$7,462 SGD
$5,835 USD
B+
Retailer 2
-
$7,516 SGD
$5,877 USD
View
B
Retailer 3
-
$7,955 SGD
$6,220 USD
View
B
Retailer 4
-
$7,993 SGD
$6,250 USD
View
B
Retailer 5
-
$8,479 SGD
$6,630 USD
View
B
Retailer 6
-
$8,617 SGD
$6,738 USD
View
B
Retailer 7
-
$8,750 SGD
$6,842 USD
View
B
Retailer 8
-
$8,908 SGD
£5,485 GBP
View
B
Retailer 9
-
$9,121 SGD
$7,132 USD
View
Retailer 10
-
$9,233 SGD
A$11,106 AUD
View
Price last confirmed 11 days ago
Retailer 11
-
$9,943 SGD
$7,775 USD
View
Price last confirmed 56 days ago
B
Retailer 12
-
$9,943 SGD
$7,775 USD
View
B
Retailer 13
-
$10,348 SGD
€7,706 EUR
View
Retailer 14
-
$10,482 SGD
$8,196 USD
View
Price last confirmed 10 days ago
B
Retailer 15
-
$11,361 SGD
£6,995 GBP
View
B
Retailer 16
-
$11,687 SGD
ZAR 147,633 ZAR
View
B
Retailer 17
-
$13,257 SGD
£8,162 GBP
View
Most Expensive
B
NZ Jewellers
f4d4f422-75b9-49b3-bb55-82b45c3d718f · Oct 30
$15,910 SGD
$12,440 USD
View
17 more retailers have this diamond
Prices start from $7,462 SGDSave up to $8,447 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
$7,462 SGD