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Emerald|Lab Grown|IGI

4.51ct D IF Emerald Lab Grown Diamond

EX • D/IF • IGI LG655460617

Shape and cutting style on the report: Emerald cut

Certificate IGI LG655460617

Diamond specifications and retailer prices

From $8,282 NZD
As of November 4, 2026
Save $27,957 NZD (77%) vs most expensive(unlock to see where)
28 retailers carry this diamond
Most expensive: $36,239 NZD at With Clarity · As of November 3, 2026
View at With Clarity

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 LG655460617 or 655460617. Listed at 28 retailers as of November 3, 2026, with prices from $8,282 to $36,239, a $27,957 spread on the same certified stone. With Clarity lists it at $36,239. 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 angle32.6°
Pavilion angle41.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG655460617
Dimensions11.49 × 7.98 × 4.96 mm
L/W Ratio1.44
Culet sizeLong
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
11.49 mm7.98 mm4.51 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG655460617
Side View
Table 62.0%Crown 32.6°Girdle: THN-MEDPavilion 41.5°Culet: LNGDepth 62.2%

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: $12,366 NZD|Low: $7,951 NZD|High: $43,490 NZD|Avg: $17,793 NZD|-17.0%
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
Retailer 19
Retailer 20
Retailer 21
Retailer 22
Retailer 23
Retailer 24
With Clarity
November 4, 2026
Retailer 5$8,282 NZD
Retailer 15$8,680 NZD
Retailer 9$9,045 NZD
Retailer 16$9,274 NZD
Retailer 7$9,608 NZD
Retailer 11$9,608 NZD
Retailer 4$9,672 NZD
Retailer 3$10,972 NZD
Retailer 23$11,424 NZD
Retailer 8$12,005 NZD
Retailer 1$12,366 NZD
Retailer 13$13,548 NZD
Retailer 14$13,664 NZD
Retailer 2$14,352 NZD
Retailer 22$15,698 NZD
Retailer 6$18,018 NZD
Retailer 18$19,892 NZD
Retailer 12$20,509 NZD
Retailer 19$21,039 NZD
Retailer 10$26,702 NZD
Retailer 21$28,021 NZD
Retailer 20$30,649 NZD
Retailer 24$33,081 NZD
Retailer 17$34,372 NZD
With Clarity$36,239 NZD

36 data points across 25 retailers

28 retailers$8,282 NZD to $36,239 NZD

A
Cheapest Retailer
-
$8,282 NZD
A
Retailer 2
-
$8,680 NZD
View
A
Retailer 3
-
$9,045 NZD
View
A
Retailer 4
-
$9,274 NZD
View
Final sale: no returns
A
Retailer 5
-
$9,608 NZD
View
Retailer 6
-
$9,608 NZD
View
Price last confirmed 19 days ago
A
Retailer 7
-
$9,672 NZD
View
A
Retailer 8
-
$10,972 NZD
View
A
Retailer 9
-
$11,424 NZD
View
A
Retailer 10
-
$12,005 NZD
View
A
Retailer 11
-
$12,366 NZD
View
A
Retailer 12
-
$13,548 NZD
View
A
Retailer 13
-
$13,664 NZD
View
A
Retailer 14
-
$14,352 NZD
View
B+
Retailer 15
-
$15,698 NZD
View
Retailer 16
-
$16,198 NZD
View
Price last confirmed 115 days ago
B+
Retailer 17
-
$17,072 NZD
View
B+
Retailer 18
-
$18,018 NZD
View
Retailer 19
-
$18,628 NZD
View
Price last confirmed 26 days ago
B+
Retailer 20
-
$19,892 NZD
View
B+
Retailer 21
-
$20,509 NZD
View
B+
Retailer 22
-
$21,039 NZD
View
B
Retailer 23
-
$26,702 NZD
View
B
Retailer 24
-
$28,021 NZD
View
B
Retailer 25
-
$30,649 NZD
View
B
Retailer 26
-
$33,081 NZD
View
B
Retailer 27
-
$34,372 NZD
View
Most Expensive
B
With Clarity
655460617 · Nov 3
$36,239 NZD
$20,382 USD
View
27 more retailers have this diamond
Prices start from $8,282 NZDSave up to $27,957 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
$8,282 NZD