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Round|Natural|GIA

3.12ct J SI2 Round Natural Diamond

EX • J/SI2 • GIA 7521700205

Certificate GIA 7521700205

Diamond specifications and retailer prices

From $42,010 NZD
CA$32,885 CAD
As of October 30, 2026
Save $27,008 NZD (39%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $69,018 NZD at MOH London · As of November 1, 2026
View at MOH London

About this 3.12ct natural round diamond

This 3.12ct natural round sits in the three to five carat band, graded J colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 7521700205. Listed at 16 retailers as of October 30, 2026, with prices from $42,010 to $69,018, a $27,008 spread on the same certified stone. MOH London lists it at $69,018. 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

3.12
Carat
J
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.5°
Pavilion angle41.6°
OriginNatural
Grading LabGIA
CertificateGIA 7521700205
Dimensions9.31 × 9.39 × 5.83 mm
L/W Ratio1.01
Star length45%
Lower girdle75%
Girdle conditionFaceted
Culet sizeNone
Cert comments
Additional clouds are not shown. Pinpoints are not shown.
Key to symbols
Feather, Crystal, Knot, Cloud, Needle, Natural
Top View
9.31 mm9.39 mm3.12 ctJ / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 7521700205
Side View
Table 59.0%Crown 34.5°Girdle: MED-STKPavilion 41.6°Culet: NoneDepth 62.3%

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: $69,018 NZD|Low: $42,010 NZD|High: $71,026 NZD|Avg: $50,398 NZD|-2.7%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
November 1, 2026
Retailer 8$42,010 NZD
Retailer 3$42,272 NZD
Retailer 7$44,650 NZD
Retailer 9$44,909 NZD
Retailer 4$46,022 NZD
Retailer 10$46,705 NZD
Retailer 5$47,463 NZD
Retailer 6$47,463 NZD
Retailer 12$49,042 NZD
Retailer 2$52,079 NZD
Retailer 11$52,095 NZD
Retailer 13$52,562 NZD
Retailer 14$62,606 NZD
MOH London$69,018 NZD

32 data points across 14 retailers

16 retailers$42,010 NZD to $69,018 NZD

B+
Cheapest Retailer
-
$42,010 NZD
CA$32,885 CAD
B+
Retailer 2
-
$42,272 NZD
$23,825 USD
View
B+
Retailer 3
-
$44,650 NZD
£19,815 GBP
View
B+
Retailer 4
-
$44,909 NZD
$25,311 USD
View
B+
Retailer 5
-
$46,022 NZD
$25,938 USD
View
B+
Retailer 6
-
$46,705 NZD
$26,323 USD
View
Retailer 7
-
$46,808 NZD
$26,381 USD
View
Price last confirmed 35 days ago
B+
Retailer 8
-
$47,463 NZD
$26,750 USD
View
B+
Retailer 9
-
$47,463 NZD
$26,750 USD
View
B+
Retailer 10
-
$49,042 NZD
$27,640 USD
View
B+
Retailer 11
-
$49,443 NZD
CA$38,703 CAD
View
B
Retailer 12
-
$52,079 NZD
€27,954 EUR
View
B
Retailer 13
-
$52,095 NZD
$29,361 USD
View
B
Retailer 14
-
$52,562 NZD
$29,624 USD
View
B
Retailer 15
-
$62,606 NZD
$35,285 USD
View
Most Expensive
B
MOH London
CD8E8B023 · Nov 1
$69,018 NZD
£30,629 GBP
View
15 more retailers have this diamond
Prices start from $42,010 NZDSave up to $27,008 NZD

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+
3.12ct Round
$42,010 NZD