CaratHunter
Plans
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 $714 USD
As of October 29, 2026
Save $2,541 USD (78%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $3,255 USD at MOH London · As of October 26, 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 October 26, 2026, with prices from $714 to $3,255, a $2,541 spread on the same certified stone. MOH London lists it at $3,255. 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 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
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: $3,255 USD|Low: $569 USD|High: $3,294 USD|Avg: $1,736 USD|-0.9%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 28, 2026
Retailer 7$714 USD
Retailer 10$798 USD
Retailer 3$960 USD
Retailer 2$1,005 USD
Retailer 9$1,132 USD
Retailer 6$1,344 USD
Retailer 11$1,500 USD
Retailer 4$1,663 USD
Retailer 5$2,039 USD
Retailer 12$2,854 USD
Retailer 8$2,970 USD
MOH London$3,255 USD

24 data points across 12 retailers

15 retailers$714 USD to $3,255 USD

A
Cheapest Retailer
-
$714 USD
A
Retailer 2
-
$776 USD
View
A
Retailer 3
-
$798 USD
View
Final sale: no returns
A
Retailer 4
-
$828 USD
View
Retailer 5
-
$828 USD
View
Price last confirmed 13 days ago
B+
Retailer 6
-
$960 USD
HK$7,500 HKD
View
B+
Retailer 7
-
$1,005 USD
View
B+
Retailer 8
-
$1,132 USD
View
B+
Retailer 9
-
$1,344 USD
View
B
Retailer 10
-
$1,500 USD
View
B
Retailer 11
-
$2,039 USD
View
B
Retailer 12
-
$2,328 USD
View
B
Retailer 13
-
$2,854 USD
View
B
Retailer 14
-
$2,970 USD
View
Most Expensive
B
MOH London
LG508123877 · Oct 26
$3,255 USD
£2,563 GBP
View
14 more retailers have this diamond
Prices start from $714 USDSave up to $2,541 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.

A
3.12ct Round
$714 USD