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Round|Lab Grown|IGI

1.20ct J VS2 Round Lab Grown Diamond

ID • J/VS2 • IGI LG400912172

Shape and cutting style on the report: Round brilliant

Certificate IGI LG400912172

Diamond specifications and retailer prices

From $860 USD
As of October 29, 2026
Save $3,725 USD (81%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $4,585 USD at MOH London · As of October 29, 2026
View at MOH London

About this 1.2ct lab-grown round diamond

This 1.2ct lab-grown round sits in the classic one-carat band, graded J colour (near-colourless) and VS2 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG400912172 or 400912172. Listed at 12 retailers as of October 29, 2026, with prices from $860 to $4,585, a $3,725 spread on the same certified stone. MOH London lists it at $4,585. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.20
Carat
J
Color
VS2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle34.9°
Pavilion angle40.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG400912172
Dimensions6.90 × 6.86 × 4.15 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory grown diamond was created by chemical vapor deposition process (CVD) Type IIa
Top View
6.90 mm6.86 mm1.20 ctJ / VS2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG400912172
Side View
Table 57.0%Crown 34.9°Girdle: MediumPavilion 40.4°Culet: NoneDepth 60.3%

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: $4,585 USD|Low: $860 USD|High: $4,620 USD|Avg: $2,101 USD|+0.6%
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
October 29, 2026
Retailer 7$860 USD
Retailer 6$1,223 USD
Retailer 11$1,370 USD
Retailer 8$1,419 USD
Retailer 10$1,419 USD
Retailer 12$1,590 USD
Retailer 4$1,643 USD
Retailer 13$1,990 USD
Retailer 9$2,251 USD
Retailer 2$2,429 USD
Retailer 3$2,719 USD
Retailer 5$3,176 USD
MOH London$4,585 USD

20 data points across 13 retailers

12 retailers$860 USD to $4,585 USD

A
Cheapest Retailer
-
$860 USD
B+
Retailer 2
-
$1,223 USD
View
B+
Retailer 3
-
$1,331 USD
View
B+
Retailer 4
-
$1,370 USD
View
Final sale: no returns
Retailer 5
-
$1,419 USD
View
Price last confirmed 17 days ago
B+
Retailer 6
-
$1,419 USD
View
B+
Retailer 7
-
$1,590 USD
View
B
Retailer 8
-
$2,251 USD
View
B
Retailer 9
-
$2,429 USD
€2,313 EUR
View
B
Retailer 10
-
$2,660 USD
View
B
Retailer 11
-
$2,719 USD
View
Most Expensive
B
MOH London
LG400912172 · Oct 29
$4,585 USD
£3,610 GBP
View
11 more retailers have this diamond
Prices start from $860 USDSave up to $3,725 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
1.20ct Round
$860 USD