Emerald|Lab Grown|IGI

0.51ct D VS1 Emerald Lab Grown Diamond

VG • D/VS1 • IGI LG816681326

Shape and cutting style on the report: Emerald cut

Certificate IGI LG816681326

Diamond specifications and retailer prices

From £78 GBP
$104 USD
As of October 27, 2026
Save £590 GBP (88%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £817 GBP 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 VS1 clarity (very-slightly-included), with a very-good cut grade and certified by IGI LG816681326 or 816681326. Listed at 18 retailers as of October 27, 2026, with a 754% 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
D
Colour
VS1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle36.9°
Pavilion angle43°
OriginLab Grown
Grading LabIGI
CertificateIGI LG816681326
Dimensions5.23 × 4.02 × 2.58 mm
L/W Ratio1.30
Culet sizeLarge
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
5.23 mm4.02 mm0.51 ctD / VS1
OriginLab Grown
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI LG816681326
Side View
Table 71.0%Crown 36.9°Girdle: Slightly ThickPavilion 43°Culet: LargeDepth 64.2%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 27
Current: £817 GBP|Low: £75 GBP|High: £822 GBP|Avg: £238 GBP|-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
Retailer 14
October 29, 2026
Retailer 14£78 GBP
Retailer 5£87 GBP
Retailer 11£91 GBP
Retailer 10£104 GBP
Retailer 13£104 GBP
Retailer 3£173 GBP
Retailer 8£176 GBP
Retailer 9£189 GBP
Retailer 2£190 GBP
Retailer 7£235 GBP
Retailer 12£313 GBP
Retailer 4£348 GBP
Retailer 6£516 GBP
MOH London£817 GBP

42 data points across 14 retailers

18 retailers£78 GBP to £668 GBP

A
Cheapest Retailer
-
£78 GBP
$104 USD
A
Retailer 2
-
£87 GBP
$116 USD
View
Final sale: no returns
A
Retailer 3
-
£91 GBP
$121 USD
View
A
Retailer 4
-
£104 GBP
$138 USD
View
A
Retailer 5
-
£104 GBP
$138 USD
View
B+
Retailer 6
-
£143 GBP
$190 USD
View
A
Retailer 7
-
£173 GBP
$230 USD
View
B+
Retailer 8
-
£176 GBP
ZAR 3,774 ZAR
View
B+
Retailer 9
-
£189 GBP
€239 EUR
View
B+
Retailer 10
-
£190 GBP
View
B+
Retailer 11
-
£235 GBP
View
B
Retailer 12
-
£312 GBP
$414 USD
View
B
Retailer 13
-
£313 GBP
$416 USD
View
B
Retailer 14
-
£348 GBP
$463 USD
View
B
Retailer 15
-
£357 GBP
$474 USD
View
B
Retailer 16
-
£516 GBP
View
B
Retailer 17
-
£668 GBP
$888 USD
View
Most Expensive
B
MOH London
LG816681326 · Oct 29
£817 GBP
View
Price under review
17 more retailers have this diamond
Prices start from £78 GBPSave up to £590 GBP

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
£78 GBP