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Emerald|Lab Grown|IGI

4.51ct D IF Emerald Lab Grown Diamond

EX • D/IF • IGI LG702530182

Shape and cutting style on the report: Emerald cut

Certificate IGI LG702530182

Diamond specifications and retailer prices

From $9,662 NZD
As of November 4, 2026
Save $33,752 NZD (78%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: $75,441 NZD at Do Amore Diamonds · As of November 4, 2026
View at Do Amore Diamonds

About this 4.51ct lab-grown emerald diamond

This 4.51ct lab-grown emerald sits in the three to five carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG702530182 or 702530182. Listed at 23 retailers as of November 4, 2026, with a 349% 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

4.51
Carat
D
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.4°
Pavilion angle39.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG702530182
Dimensions11.08 × 7.75 × 5.15 mm
L/W Ratio1.43
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
11.08 mm7.75 mm4.51 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG702530182
Side View
Table 61.0%Crown 36.4°Girdle: MED-STKPavilion 39.9°Culet: LargeDepth 66.5%

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: $15,346 NZD|Low: $9,276 NZD|High: $43,413 NZD|Avg: $18,902 NZD|-1.0%
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 18$9,662 NZD
Retailer 7$10,126 NZD
Retailer 9$10,421 NZD
Retailer 10$10,821 NZD
Retailer 3$11,207 NZD
Retailer 6$11,207 NZD
Retailer 17$11,228 NZD
Retailer 16$13,803 NZD
Retailer 5$14,686 NZD
Retailer 1$15,346 NZD
Retailer 4$17,309 NZD
Retailer 15$20,061 NZD
Retailer 14$25,171 NZD
Retailer 11$26,410 NZD
Retailer 13$27,339 NZD
Retailer 12$28,514 NZD
Retailer 2$39,240 NZD
Retailer 8$43,413 NZD

43 data points across 18 retailers

23 retailers$9,662 NZD to $43,413 NZD

A
Cheapest Retailer
-
$9,662 NZD
A
Retailer 2
-
$10,126 NZD
View
A
Retailer 3
-
$10,421 NZD
View
A
Retailer 4
-
$10,693 NZD
View
A
Retailer 5
-
$10,821 NZD
View
Final sale: no returns
Retailer 6
-
$11,207 NZD
View
Price last confirmed 19 days ago
A
Retailer 7
-
$11,207 NZD
View
A
Retailer 8
-
$11,228 NZD
View
A
Retailer 9
-
$13,803 NZD
View
B+
Retailer 10
-
$14,686 NZD
View
B+
Retailer 11
-
$15,346 NZD
View
B+
Retailer 12
-
$17,309 NZD
View
B+
Retailer 13
-
$17,613 NZD
View
B+
Retailer 14
-
$20,061 NZD
View
B+
Retailer 15
-
$25,171 NZD
View
B
Retailer 16
-
$26,410 NZD
View
B
Retailer 17
-
$27,339 NZD
View
B
Retailer 18
-
$28,514 NZD
View
B
Retailer 19
-
$39,240 NZD
View
B
Retailer 20
-
$43,170 NZD
View
B
Retailer 21
-
$43,413 NZD
View
Retailer 22
-
$66,479 NZD
View
Price under review
Most Expensive
Do Amore Diamonds
23-702530182 · Nov 4
$75,441 NZD
$42,430 USD
View
Price under review
22 more retailers have this diamond
Prices start from $9,662 NZDSave up to $33,752 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
$9,662 NZD