Emerald|Lab Grown|IGI

0.51ct I SI2 Emerald Lab Grown Diamond

VG • I/SI2 • IGI LG407941420

Shape and cutting style on the report: Emerald cut

Certificate IGI LG407941420

Diamond specifications and retailer prices

From $244 USD
As of October 29, 2026
Save $973 USD (80%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $1,217 USD at MOH London · As of October 29, 2026
View at MOH London

About this 0.51ct lab-grown emerald diamond

This 0.51ct lab-grown emerald sits in the half to three-quarter carat band, graded I colour (near-colourless) and SI2 clarity (slightly-included), with a very-good cut grade and certified by IGI LG407941420 or 407941420. Listed at 11 retailers as of October 29, 2026, with prices from $244 to $1,217, a $973 spread on the same certified stone. MOH London lists it at $1,217. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

0.51
Carat
I
Color
SI2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryGood
FluorescenceNone
Crown angle24.3°
Pavilion angle41.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG407941420
Dimensions5.32 × 3.87 × 2.51 mm
L/W Ratio1.37
Culet sizeLong
Cert comments
This Laboratory grown diamond was created by chemical vapor deposition process (CVD) Type IIa
Top View
5.32 mm3.87 mm0.51 ctI / SI2
OriginLab Grown
CutVery Good
PolishVery Good
SymmetryGood
FluorescenceNone
CertificateIGI LG407941420
Side View
Table 67.5%Crown 24.3°Girdle: Slightly ThickPavilion 41.1°Culet: LNGDepth 64.9%

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: Oct 29
Current: $1,217 USD|Low: $234 USD|High: $1,226 USD|Avg: $540 USD|-0.5%
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$244 USD
Retailer 3$272 USD
Retailer 13$283 USD
Retailer 9$302 USD
Retailer 12$302 USD
Retailer 8$350 USD
Retailer 10$508 USD
Retailer 2$578 USD
Retailer 4$600 USD
Retailer 5$633 USD
Retailer 11$971 USD
Retailer 6$974 USD
MOH London$1,217 USD

23 data points across 13 retailers

11 retailers$244 USD to $1,217 USD

B+
Cheapest Retailer
-
$244 USD
B+
Retailer 2
-
$272 USD
View
Final sale: no returns
B+
Retailer 3
-
$283 USD
View
B+
Retailer 4
-
$302 USD
View
B+
Retailer 5
-
$302 USD
View
B
Retailer 6
-
$350 USD
View
B
Retailer 7
-
$508 USD
View
B
Retailer 8
-
$578 USD
€550 EUR
View
C
Retailer 9
-
$971 USD
View
C
Retailer 10
-
$974 USD
View
Most Expensive
C
MOH London
LG407941420 · Oct 29
$1,217 USD
£958 GBP
View
10 more retailers have this diamond
Prices start from $244 USDSave up to $973 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+
0.51ct Emerald
$244 USD