Emerald|Lab Grown|IGI

4.51ct F VVS1 Emerald Lab Grown Diamond

ID • F/VVS1 • IGI LG845617018

Shape and cutting style on the report: Emerald cut

Certificate IGI LG845617018

Diamond specifications and retailer prices

From $1,710 NZD
$964 USD
As of October 27, 2026
Save $11,419 NZD (87%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $13,130 NZD at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 4.51ct lab-grown emerald diamond

This 4.51ct lab-grown emerald sits in the three to five carat band, graded F colour (colourless) and VVS1 clarity (very-very-slightly-included), with a top-tier cut grade and certified by IGI LG845617018 or 845617018. Listed at 22 retailers as of October 27, 2026, with prices from $1,710 to $13,130, a $11,419 spread on the same certified stone. Brilliant Earth lists it at $13,130. 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

4.51
Carat
F
Colour
VVS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle40.8°
Pavilion angle42.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG845617018
Dimensions11.47 × 7.56 × 5.06 mm
L/W Ratio1.52
Culet sizeLarge
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.47 mm7.56 mm4.51 ctF / VVS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG845617018
Side View
Table 67.0%Crown 40.8°Girdle: Slightly ThickPavilion 42.3°Culet: LargeDepth 66.9%

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 27
Current: $13,130 NZD|Low: $1,710 NZD|High: $13,857 NZD|Avg: $4,350 NZD|-5.2%
Brilliant Earth
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
Retailer 19
Retailer 20
Retailer 21
November 2, 2026
Retailer 10$1,710 NZD
Retailer 14$1,900 NZD
Retailer 21$1,900 NZD
Retailer 11$2,026 NZD
Retailer 16$2,280 NZD
Retailer 15$2,683 NZD
Retailer 13$2,821 NZD
Retailer 6$3,012 NZD
Retailer 2$3,037 NZD
Retailer 12$3,797 NZD
Retailer 7$4,208 NZD
Retailer 3$4,221 NZD
Retailer 5$4,260 NZD
Retailer 19$5,199 NZD
Retailer 18$5,435 NZD
Retailer 9$5,898 NZD
Retailer 4$6,615 NZD
Retailer 8$6,740 NZD
Retailer 20$6,858 NZD
Retailer 17$7,097 NZD
Brilliant Earth$13,130 NZD

13 data points across 21 retailers

22 retailers$1,710 NZD to $13,130 NZD

A
Cheapest Retailer
-
$1,710 NZD
$964 USD
Retailer 2
-
$1,900 NZD
$1,071 USD
View
Price last confirmed 8 days ago
A
Retailer 3
-
$1,900 NZD
$1,071 USD
View
Final sale: no returns
Retailer 4
-
$2,026 NZD
$1,142 USD
View
Price last confirmed 7 days ago
A
Retailer 5
-
$2,280 NZD
$1,285 USD
View
A
Retailer 6
-
$2,683 NZD
$1,512 USD
View
A
Retailer 7
-
$2,821 NZD
$1,590 USD
View
A
Retailer 8
-
$3,012 NZD
€1,617 EUR
View
A
Retailer 9
-
$3,037 NZD
£1,348 GBP
View
Retailer 10
-
$3,797 NZD
$2,140 USD
View
Price last confirmed 8 days ago
B+
Retailer 11
-
$4,208 NZD
ZAR 38,314 ZAR
View
B+
Retailer 12
-
$4,221 NZD
A$3,660 AUD
View
B+
Retailer 13
-
$4,260 NZD
$2,401 USD
View
B+
Retailer 14
-
$5,199 NZD
$2,930 USD
View
B+
Retailer 15
-
$5,435 NZD
£2,412 GBP
View
B+
Retailer 16
-
$5,898 NZD
$3,324 USD
View
B+
Retailer 17
-
$6,615 NZD
SGD 5,038 SGD
View
B+
Retailer 18
-
$6,740 NZD
£2,991 GBP
View
B+
Retailer 19
-
$6,858 NZD
$3,865 USD
View
B+
Retailer 20
-
$7,097 NZD
$4,000 USD
View
B
Retailer 21
-
$9,838 NZD
$5,545 USD
View
Most Expensive
B
Brilliant Earth
22284327A · Oct 31
$13,130 NZD
$7,400 USD
View
21 more retailers have this diamond
Prices start from $1,710 NZDSave up to $11,419 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
4.51ct Emerald
$1,710 NZD