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Emerald|Lab Grown|IGI

0.51ct D FL Emerald Lab Grown Diamond

VG • D/FL • IGI LG816658211

Shape and cutting style on the report: Emerald cut

Certificate IGI LG816658211

Diamond specifications and retailer prices

From $412 NZD
$232 USD
As of October 29, 2026
Save $1,886 NZD (82%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $3,046 NZD at Blue Nile · As of October 31, 2026
View at Blue Nile

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 FL clarity (flawless or internally-flawless), with a very-good cut grade and certified by IGI LG816658211 or 816658211. Listed at 17 retailers as of October 29, 2026, with a 458% 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
FL
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.8°
Pavilion angle45.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG816658211
Dimensions5.44 × 3.73 × 2.57 mm
L/W Ratio1.46
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
5.44 mm3.73 mm0.51 ctD / FL
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG816658211
Side View
Table 66.0%Crown 36.8°Girdle: MediumPavilion 45.7°Culet: LargeDepth 68.9%

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: $3,046 NZD|Low: $412 NZD|High: $3,046 NZD|Avg: $1,281 NZD|+9.2%
Blue Nile
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
Retailer 15
Retailer 16
Retailer 17
November 1, 2026
Retailer 3$412 NZD
Retailer 17$460 NZD
Retailer 16$477 NZD
Retailer 8$504 NZD
Retailer 12$511 NZD
Retailer 9$692 NZD
Retailer 7$701 NZD
Retailer 10$798 NZD
Retailer 14$1,019 NZD
Retailer 5$1,020 NZD
Retailer 11$1,073 NZD
Retailer 6$1,642 NZD
Retailer 13$1,812 NZD
Retailer 4$2,113 NZD
Retailer 2$2,260 NZD
Retailer 15$2,298 NZD
Blue Nile$3,046 NZD

27 data points across 17 retailers

17 retailers$412 NZD to $2,298 NZD

A
Cheapest Retailer
-
$412 NZD
$232 USD
A
Retailer 2
-
$460 NZD
$259 USD
View
Final sale: no returns
A
Retailer 3
-
$477 NZD
$269 USD
View
A
Retailer 4
-
$504 NZD
$284 USD
View
A
Retailer 5
-
$511 NZD
$288 USD
View
B+
Retailer 6
-
$692 NZD
$390 USD
View
B+
Retailer 7
-
$701 NZD
$395 USD
View
B+
Retailer 8
-
$798 NZD
$450 USD
View
B
Retailer 9
-
$1,019 NZD
ZAR 9,282 ZAR
View
B
Retailer 10
-
$1,020 NZD
$575 USD
View
B
Retailer 11
-
$1,073 NZD
€576 EUR
View
B
Retailer 12
-
$1,642 NZD
CA$1,285 CAD
View
B
Retailer 13
-
$1,812 NZD
$1,021 USD
View
B
Retailer 14
-
$2,113 NZD
$1,191 USD
View
B
Retailer 15
-
$2,260 NZD
£1,003 GBP
View
B
Retailer 16
-
$2,298 NZD
$1,295 USD
View
Most Expensive
Blue Nile
30303461 · Oct 31
$3,046 NZD
$1,717 USD
View
Price under review
16 more retailers have this diamond
Prices start from $412 NZDSave up to $1,886 NZD

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
$412 NZD