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Emerald|Lab Grown|IGI

0.51ct D SI1 Emerald Lab Grown Diamond

ID • D/SI1 • IGI LG639433229

Shape and cutting style on the report: Emerald cut

Certificate IGI LG639433229

Diamond specifications and retailer prices

From $179 USD
HK$1,400 HKD
As of October 29, 2026
Save $361 USD (67%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $1,261 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 D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG639433229 or 639433229. Listed at 9 retailers as of October 29, 2026, with a 201% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

0.51
Carat
D
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle36.5°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG639433229
Dimensions5.75 × 3.75 × 2.44 mm
L/W Ratio1.53
Culet sizeLarge
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
5.75 mm3.75 mm0.51 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG639433229
Side View
Table 63.0%Crown 36.5°Girdle: STK-THKPavilion 40.3°Culet: LargeDepth 65.1%

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: Oct 29
Current: $1,261 USD|Low: $225 USD|High: $1,270 USD|Avg: $413 USD|-0.6%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 30, 2026
Retailer 4$225 USD
Retailer 3$271 USD
Retailer 6$291 USD
Retailer 2$310 USD
Retailer 8$330 USD
Retailer 7$378 USD
Retailer 5$380 USD
MOH London$1,261 USD

42 data points across 8 retailers

9 retailers$179 USD to $540 USD

A
Cheapest Retailer
-
$179 USD
HK$1,400 HKD
B+
Retailer 2
-
$225 USD
View
B+
Retailer 3
-
$271 USD
€258 EUR
View
B+
Retailer 4
-
$291 USD
View
B+
Retailer 5
-
$310 USD
£244 GBP
View
B
Retailer 6
-
$378 USD
View
B
Retailer 7
-
$380 USD
View
B
Retailer 8
-
$540 USD
View
Most Expensive
MOH London
LG639433229 · Oct 29
$1,261 USD
£993 GBP
View
Price under review
8 more retailers have this diamond
Prices start from $179 USDSave up to $361 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
0.51ct Emerald
$179 USD