Round|Natural|GIA

3.15ct J SI1 Round Natural Diamond

EX • J/SI1 • GIA 1509870766

Certificate GIA 1509870766

Diamond specifications and retailer prices

From $36,597 CAD
$26,199 USD
As of October 30, 2026
Save $19,481 CAD (35%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $56,078 CAD at MOH London · As of October 29, 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 29, 2026, with prices from $36,597 to $56,078, a $19,481 spread on the same certified stone. MOH London lists it at $56,078. 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
Color
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 30
Current: $56,078 CAD|Low: $31,946 CAD|High: $56,451 CAD|Avg: $40,884 CAD|+0.4%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
October 31, 2026
Retailer 4$36,597 CAD
Retailer 5$37,204 CAD
Retailer 3$37,781 CAD
Retailer 6$38,000 CAD
Retailer 2$42,285 CAD
MOH London$56,078 CAD

24 data points across 6 retailers

6 retailers$36,597 CAD to $56,078 CAD

B+
Cheapest Retailer
-
$36,597 CAD
$26,199 USD
B+
Retailer 2
-
$37,204 CAD
$26,633 USD
View
B+
Retailer 3
-
$37,781 CAD
$27,046 USD
View
Final sale: no returns
B+
Retailer 4
-
$38,000 CAD
$27,203 USD
View
B
Retailer 5
-
$42,285 CAD
€28,829 EUR
View
Most Expensive
B
MOH London
A2270A107 · Oct 29
$56,078 CAD
£31,610 GBP
View
5 more retailers have this diamond
Prices start from $36,597 CADSave up to $19,481 CAD

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
$36,597 CAD