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Round|Natural|GIA

3.12ct G SI1 Round Natural Diamond

EX • G/SI1 • GIA 6552614190

Certificate GIA 6552614190

Diamond specifications and retailer prices

From $51,544 AUD
$36,123 USD
As of November 2, 2026
Save $25,784 AUD (33%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: $77,328 AUD at Moon Ocean · As of November 2, 2026
View at Moon Ocean

About this 3.12ct natural round diamond

This 3.12ct natural round sits in the three to five carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6552614190. Listed at 5 retailers as of November 2, 2026, with prices from $51,544 to $77,328, a $25,784 spread on the same certified stone. Moon Ocean lists it at $77,328. 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
G
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
Crown angle36°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 6552614190
Dimensions9.25 × 9.31 × 5.80 mm
L/W Ratio1.01
Girdle conditionSlightly Thick
Key to symbols
Twinning Wisp, Feather, Crystal
Top View
9.25 mm9.31 mm3.12 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
CertificateGIA 6552614190
Side View
Table 58.0%Crown 36°Girdle: MED-STKPavilion 40.8°CuletDepth 62.5%

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 2
Current: $77,328 AUD|Low: $44,391 AUD|High: $99,797 AUD|Avg: $61,738 AUD
Moon Ocean
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 2, 2026
Retailer 6$44,391 AUD
Retailer 5$47,444 AUD
Retailer 2$51,544 AUD
Retailer 3$56,893 AUD
Retailer 10$56,980 AUD
Retailer 9$61,779 AUD
Retailer 8$64,156 AUD
Retailer 4$69,182 AUD
Moon Ocean$77,328 AUD
Retailer 7$99,797 AUD

7 data points across 10 retailers

5 retailers$51,544 AUD to $77,328 AUD

Retailer 1
-
$44,391 AUD
$31,110 USD
Price last confirmed 15 days ago
B+
Retailer 2
-
$51,544 AUD
$36,123 USD
View
B+
Retailer 3
-
$56,893 AUD
$39,872 USD
View
B
Retailer 4
-
$69,182 AUD
$48,484 USD
View
Most Expensive
B
Moon Ocean
NVN-21D5EE5CD-190 · Nov 2
$77,328 AUD
£42,672 GBP
View
4 more retailers have this diamond
Prices start from $51,544 AUDSave up to $25,784 AUD

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
$51,544 AUD