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Round|Lab Grown|IGI

3.12ct J VS2 Round Lab Grown Diamond

ID • J/VS2 • IGI LG508123877

Shape and cutting style on the report: Round brilliant

Certificate IGI LG508123877

Diamond specifications and retailer prices

From $1,020 AUD
As of November 5, 2026
Save $3,612 AUD (78%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $4,632 AUD at MOH London · As of November 5, 2026
View at MOH London

About this 3.12ct lab-grown round diamond

This 3.12ct lab-grown round sits in the three to five carat band, graded J colour (near-colourless) and VS2 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG508123877 or 508123877. Listed at 15 retailers as of November 5, 2026, with prices from $1,020 to $4,632, a $3,612 spread on the same certified stone. MOH London lists it at $4,632. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

3.12
Carat
J
Colour
VS2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.3°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG508123877
Dimensions9.32 × 9.40 × 5.82 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
9.32 mm9.40 mm3.12 ctJ / VS2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG508123877
Side View
Table 56.5%Crown 35.3°GirdlePavilion 40.9°Culet: NoneDepth 62.2%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: $4,632 AUD|Low: $1,020 AUD|High: $4,706 AUD|Avg: $2,460 AUD|-1.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 5, 2026
Retailer 8$1,020 AUD
Retailer 10$1,140 AUD
Retailer 3$1,371 AUD
Retailer 5$1,436 AUD
Retailer 9$1,617 AUD
Retailer 7$1,920 AUD
Retailer 11$2,143 AUD
Retailer 4$2,374 AUD
Retailer 2$2,400 AUD
Retailer 6$2,913 AUD
Retailer 12$4,077 AUD
MOH London$4,632 AUD

24 data points across 12 retailers

15 retailers$1,020 AUD to $4,632 AUD

A
Cheapest Retailer
-
$1,020 AUD
A
Retailer 2
-
$1,109 AUD
View
A
Retailer 3
-
$1,140 AUD
View
Final sale: no returns
A
Retailer 4
-
$1,183 AUD
View
Retailer 5
-
$1,183 AUD
View
Price last confirmed 20 days ago
B+
Retailer 6
-
$1,371 AUD
View
B+
Retailer 7
-
$1,436 AUD
View
B+
Retailer 8
-
$1,617 AUD
View
B+
Retailer 9
-
$1,920 AUD
View
B
Retailer 10
-
$2,143 AUD
View
B+
Retailer 11
-
$2,400 AUD
View
B
Retailer 12
-
$2,913 AUD
View
B
Retailer 13
-
$3,326 AUD
View
B
Retailer 14
-
$4,077 AUD
View
Most Expensive
B
MOH London
LG508123877 · Nov 5
$4,632 AUD
£2,553 GBP
View
14 more retailers have this diamond
Prices start from $1,020 AUDSave up to $3,612 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.

A
3.12ct Round
$1,020 AUD