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3.15ct J SI1 Round Natural Diamond

EX • J/SI1 • GIA 1509870766

Certificate GIA 1509870766

Diamond specifications and retailer prices

From $33,493 SGD
$26,199 USD
As of October 31, 2026
Save $17,555 SGD (34%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $51,048 SGD at MOH London · As of November 1, 2026
View at MOH London

About this 3.15ct natural round diamond

This 3.15ct natural round sits in the three to five carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1509870766. Listed at 6 retailers as of October 31, 2026, with prices from $33,493 to $51,048, a $17,555 spread on the same certified stone. MOH London lists it at $51,048. 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

3.15
Carat
J
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 1509870766
Dimensions9.25 × 9.33 × 5.83 mm
L/W Ratio1.01
Star length50%
Lower girdle80%
Key to symbols
Crystal, Cloud, Needle
Top View
9.25 mm9.33 mm3.15 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1509870766
Side View
Table 58.0%Crown 35.5°Girdle: STK-STKPavilion 41°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: Oct 31
Current: $51,048 SGD|Low: $29,236 SGD|High: $51,662 SGD|Avg: $37,430 SGD|-0.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 1, 2026
Retailer 4$33,493 SGD
Retailer 5$34,048 SGD
Retailer 3$34,576 SGD
Retailer 6$34,776 SGD
Retailer 2$38,698 SGD
MOH London$51,048 SGD

25 data points across 6 retailers

6 retailers$33,493 SGD to $51,048 SGD

B+
Cheapest Retailer
-
$33,493 SGD
$26,199 USD
B+
Retailer 2
-
$34,048 SGD
$26,633 USD
View
B+
Retailer 3
-
$34,576 SGD
$27,046 USD
View
Final sale: no returns
B+
Retailer 4
-
$34,776 SGD
$27,203 USD
View
B
Retailer 5
-
$38,698 SGD
€28,829 EUR
View
Most Expensive
B
MOH London
A2270A107 · Nov 1
$51,048 SGD
£31,442 GBP
View
5 more retailers have this diamond
Prices start from $33,493 SGDSave up to $17,555 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+
3.15ct Round
$33,493 SGD