Emerald|Lab Grown|IGI

0.51ct E FL Emerald Lab Grown Diamond

VG • E/FL • IGI LG786676866

Shape and cutting style on the report: Emerald cut

Certificate IGI LG786676866

Diamond specifications and retailer prices

From $139 USD
As of October 27, 2026
Save $666 USD (83%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $869 USD at Flawless Fine Jewelry · As of September 22, 2026
View at Flawless Fine Jewelry

About this 0.51ct lab-grown emerald diamond

This 0.51ct lab-grown emerald sits in the half to three-quarter carat band, graded E colour (colourless) and FL clarity (flawless or internally-flawless), with a very-good cut grade and certified by IGI LG786676866 or 786676866. Listed at 19 retailers as of October 27, 2026, with a 479% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
E
Color
FL
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle40.8°
Pavilion angle43.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG786676866
Dimensions5.59 × 3.74 × 2.56 mm
L/W Ratio1.49
Culet sizeLarge
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
5.59 mm3.74 mm0.51 ctE / FL
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG786676866
Side View
Table 74.0%Crown 40.8°Girdle: MED-STKPavilion 43.3°Culet: LargeDepth 68.4%

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 27
Current: $171 USD|Low: $139 USD|High: $828 USD|Avg: $391 USD|-2.3%
Retailer 1
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Retailer 18
October 29, 2026
Retailer 7$139 USD
Retailer 15$154 USD
Retailer 5$161 USD
Retailer 1$171 USD
Retailer 3$172 USD
Retailer 18$232 USD
Retailer 12$291 USD
Retailer 2$296 USD
Retailer 14$310 USD
Retailer 9$331 USD
Retailer 8$473 USD
Retailer 6$474 USD
Retailer 13$540 USD
Retailer 4$554 USD
Retailer 17$585 USD
Retailer 16$608 USD
Retailer 10$630 USD
Retailer 11$805 USD

31 data points across 18 retailers

19 retailers$139 USD to $805 USD

A
Cheapest Retailer
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$139 USD
A
Retailer 2
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$154 USD
View
Final sale: no returns
A
Retailer 3
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$161 USD
View
A
Retailer 4
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$171 USD
View
A
Retailer 5
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$172 USD
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A
Retailer 6
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$232 USD
View
A
Retailer 7
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$291 USD
£229 GBP
View
A
Retailer 8
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$296 USD
€282 EUR
View
A
Retailer 9
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$310 USD
ZAR 5,015 ZAR
View
A
Retailer 10
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$331 USD
View
B+
Retailer 11
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$473 USD
View
B+
Retailer 12
-
$474 USD
SGD 641 SGD
View
B
Retailer 13
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$540 USD
View
B
Retailer 14
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$554 USD
View
B
Retailer 15
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$585 USD
View
B
Retailer 16
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$608 USD
View
B
Retailer 17
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$630 USD
View
B
Retailer 18
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$805 USD
£634 GBP
View
Most Expensive
B
Flawless Fine Jewelry
78EE227EA · Sep 22
$869 USD
£684 GBP
View
Price last confirmed 37 days ago
18 more retailers have this diamond
Prices start from $139 USDSave up to $666 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
$139 USD