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Round|Lab Grown|IGI

3.12ct J VS2 Round Lab Grown Diamond

ID • J/VS2 • IGI LG490174547

Shape and cutting style on the report: Round brilliant

Certificate IGI LG490174547

Diamond specifications and retailer prices

From $3,030 USD
As of October 29, 2026
Save $2,932 USD (49%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $14,148 USD at MOH London · As of October 29, 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 LG490174547 or 490174547. Listed at 11 retailers as of October 29, 2026, with a 97% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
Color
VS2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.9°
Pavilion angle41.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG490174547
Dimensions9.34 × 9.29 × 5.79 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
9.34 mm9.29 mm3.12 ctJ / VS2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG490174547
Side View
Table 58.5%Crown 34.9°Girdle: MED-STKPavilion 41.1°Culet: NoneDepth 62.2%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: $14,148 USD|Low: $3,030 USD|High: $15,966 USD|Avg: $8,855 USD|+0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 29, 2026
Retailer 3$3,030 USD
Retailer 5$6,248 USD
Retailer 6$6,677 USD
Retailer 7$6,910 USD
Retailer 8$7,364 USD
Retailer 2$8,367 USD
Retailer 4$10,673 USD
MOH London$14,148 USD
Retailer 9$15,966 USD

15 data points across 9 retailers

11 retailers$3,030 USD to $5,962 USD

B
Cheapest Retailer
-
$3,030 USD
B
Retailer 2
-
$5,962 USD
View
Retailer 3
-
$6,248 USD
View
Price under review
Retailer 4
-
$6,677 USD
View
Price under review
Final sale: no returns
Retailer 5
-
$6,910 USD
View
Price under review
Retailer 6
-
$6,916 USD
View
Price under review
Retailer 7
-
$6,916 USD
View
Price under review
Retailer 8
-
$8,210 USD
View
Price under review
Retailer 9
-
$8,367 USD
View
Price under review
Most Expensive
MOH London
LG490174547 · Oct 29
$14,148 USD
£11,140 GBP
View
Price under review
9 more retailers have this diamond
Prices start from $3,030 USDSave up to $2,932 USD

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
$3,030 USD