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Emerald|Lab Grown|IGI

2.51ct D IF Emerald Lab Grown Diamond

ID • D/IF • IGI LG816641137

Shape and cutting style on the report: Emerald cut

Certificate IGI LG816641137

Diamond specifications and retailer prices

From $1,221 NZD
As of November 4, 2026
Save $4,747 NZD (80%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $8,908 NZD at Rare Carat · As of October 7, 2026
View at Rare Carat

About this 2.51ct lab-grown emerald diamond

This 2.51ct lab-grown emerald sits in the two to three carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG816641137 or 816641137. Listed at 19 retailers as of November 3, 2026, with a 389% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

2.51
Carat
D
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.1°
Pavilion angle39.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG816641137
Dimensions10.23 × 6.36 × 3.70 mm
L/W Ratio1.61
Culet sizeLarge
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
10.23 mm6.36 mm2.51 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG816641137
Side View
Table 65.0%Crown 33.1°Girdle: MED-STKPavilion 39.9°Culet: LargeDepth 58.2%

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: Nov 4
Current: $2,247 NZD|Low: $1,221 NZD|High: $6,420 NZD|Avg: $3,066 NZD|-14.8%
Retailer 1
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
Retailer 18
November 4, 2026
Retailer 11$1,221 NZD
Retailer 16$1,330 NZD
Retailer 18$1,367 NZD
Retailer 4$1,417 NZD
Retailer 10$1,465 NZD
Retailer 12$1,734 NZD
Retailer 9$2,066 NZD
Retailer 1$2,247 NZD
Retailer 8$2,331 NZD
Retailer 7$3,401 NZD
Retailer 17$3,490 NZD
Retailer 6$3,659 NZD
Retailer 13$3,984 NZD
Retailer 14$4,312 NZD
Retailer 2$4,417 NZD
Retailer 3$4,834 NZD
Retailer 15$4,888 NZD
Retailer 5$5,969 NZD

32 data points across 18 retailers

19 retailers$1,221 NZD to $5,969 NZD

A
Cheapest Retailer
-
$1,221 NZD
A
Retailer 2
-
$1,330 NZD
View
A
Retailer 3
-
$1,367 NZD
View
Final sale: no returns
A
Retailer 4
-
$1,417 NZD
View
Retailer 5
-
$1,465 NZD
View
Price last confirmed 18 days ago
A
Retailer 6
-
$1,734 NZD
View
A
Retailer 7
-
$2,066 NZD
View
A
Retailer 8
-
$2,247 NZD
View
A
Retailer 9
-
$2,331 NZD
View
A
Retailer 10
-
$3,401 NZD
View
A
Retailer 11
-
$3,490 NZD
View
A
Retailer 12
-
$3,659 NZD
View
A
Retailer 13
-
$3,984 NZD
View
A
Retailer 14
-
$4,312 NZD
View
A
Retailer 15
-
$4,417 NZD
View
A
Retailer 16
-
$4,834 NZD
View
B+
Retailer 17
-
$4,888 NZD
View
B+
Retailer 18
-
$5,969 NZD
View
Most Expensive
Rare Carat
KR18-27A · Oct 7
$8,908 NZD
$5,010 USD
View
Price last confirmed 27 days ago
18 more retailers have this diamond
Prices start from $1,221 NZDSave up to $4,747 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
2.51ct Emerald
$1,221 NZD