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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 $6,670 AUD
As of November 4, 2026
Save $22,515 AUD (77%) vs most expensive(unlock to see where)
28 retailers carry this diamond
Most expensive: $29,185 AUD 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 $6,670 to $29,185, a $22,515 spread on the same certified stone. With Clarity lists it at $29,185. 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

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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: $9,959 AUD|Low: $6,403 AUD|High: $35,024 AUD|Avg: $14,330 AUD|-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$6,670 AUD
Retailer 15$6,991 AUD
Retailer 9$7,284 AUD
Retailer 16$7,469 AUD
Retailer 7$7,738 AUD
Retailer 11$7,738 AUD
Retailer 4$7,790 AUD
Retailer 3$8,836 AUD
Retailer 23$9,200 AUD
Retailer 8$9,668 AUD
Retailer 1$9,959 AUD
Retailer 13$10,911 AUD
Retailer 14$11,004 AUD
Retailer 2$11,558 AUD
Retailer 22$12,642 AUD
Retailer 6$14,511 AUD
Retailer 18$16,020 AUD
Retailer 12$16,517 AUD
Retailer 19$16,944 AUD
Retailer 10$21,504 AUD
Retailer 21$22,567 AUD
Retailer 20$24,683 AUD
Retailer 24$26,642 AUD
Retailer 17$27,681 AUD
With Clarity$29,185 AUD

36 data points across 25 retailers

28 retailers$6,670 AUD to $29,185 AUD

A
Cheapest Retailer
-
$6,670 AUD
A
Retailer 2
-
$6,991 AUD
View
A
Retailer 3
-
$7,284 AUD
View
A
Retailer 4
-
$7,469 AUD
View
Final sale: no returns
A
Retailer 5
-
$7,738 AUD
View
Retailer 6
-
$7,738 AUD
View
Price last confirmed 19 days ago
A
Retailer 7
-
$7,790 AUD
View
A
Retailer 8
-
$8,836 AUD
View
A
Retailer 9
-
$9,200 AUD
View
A
Retailer 10
-
$9,668 AUD
View
A
Retailer 11
-
$9,959 AUD
View
A
Retailer 12
-
$10,911 AUD
View
A
Retailer 13
-
$11,004 AUD
View
A
Retailer 14
-
$11,558 AUD
View
B+
Retailer 15
-
$12,642 AUD
View
Retailer 16
-
$13,045 AUD
View
Price last confirmed 115 days ago
B+
Retailer 17
-
$13,749 AUD
View
B+
Retailer 18
-
$14,511 AUD
View
Retailer 19
-
$15,002 AUD
View
Price last confirmed 26 days ago
B+
Retailer 20
-
$16,020 AUD
View
B+
Retailer 21
-
$16,517 AUD
View
B+
Retailer 22
-
$16,944 AUD
View
B
Retailer 23
-
$21,504 AUD
View
B
Retailer 24
-
$22,567 AUD
View
B
Retailer 25
-
$24,683 AUD
View
B
Retailer 26
-
$26,642 AUD
View
B
Retailer 27
-
$27,681 AUD
View
Most Expensive
B
With Clarity
655460617 · Nov 3
$29,185 AUD
$20,382 USD
View
27 more retailers have this diamond
Prices start from $6,670 AUDSave up to $22,515 AUD

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
$6,670 AUD