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Emerald|Lab Grown|IGI

4.28ct D FL Emerald Lab Grown Diamond

ID • D/FL • IGI LG821641255

Shape and cutting style on the report: Emerald cut

Certificate IGI LG821641255

Diamond specifications and retailer prices

From $9,033 NZD
$5,091 USD
As of October 30, 2026
Save $42,090 NZD (82%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $51,123 NZD at With Clarity · As of October 31, 2026
View at With Clarity

About this 4.28ct lab-grown emerald diamond

This 4.28ct lab-grown emerald sits in the three to five carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG821641255 or 821641255. Listed at 14 retailers as of October 30, 2026, with prices from $9,033 to $51,123, a $42,090 spread on the same certified stone. With Clarity lists it at $51,123. 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

4.28
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.4°
Pavilion angle39.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG821641255
Dimensions11.21 × 7.51 × 4.96 mm
L/W Ratio1.49
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
11.21 mm7.51 mm4.28 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG821641255
Side View
Table 62.0%Crown 36.4°Girdle: MediumPavilion 39.4°Culet: LargeDepth 66.0%

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 30
Current: $12,501 NZD|Low: $9,033 NZD|High: $59,320 NZD|Avg: $22,937 NZD|-13.6%
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
With Clarity
October 31, 2026
Retailer 11$9,033 NZD
Retailer 13$11,412 NZD
Retailer 12$12,105 NZD
Retailer 1$12,501 NZD
Retailer 5$14,461 NZD
Retailer 4$14,842 NZD
Retailer 8$15,836 NZD
Retailer 2$18,034 NZD
Retailer 9$20,014 NZD
Retailer 7$20,463 NZD
Retailer 6$21,611 NZD
Retailer 3$25,962 NZD
Retailer 10$34,404 NZD
With Clarity$51,123 NZD

41 data points across 14 retailers

14 retailers$9,033 NZD to $51,123 NZD

A
Cheapest Retailer
-
$9,033 NZD
$5,091 USD
A
Retailer 2
-
$11,412 NZD
$6,432 USD
View
A
Retailer 3
-
$12,105 NZD
HK$53,300 HKD
View
A
Retailer 4
-
$12,501 NZD
£5,548 GBP
View
Retailer 5
-
$14,461 NZD
$8,150 USD
View
Price last confirmed 13 days ago
B+
Retailer 6
-
$14,842 NZD
$8,365 USD
View
B+
Retailer 7
-
$15,836 NZD
€8,500 EUR
View
B+
Retailer 8
-
$18,034 NZD
$10,164 USD
View
B+
Retailer 9
-
$20,014 NZD
£8,882 GBP
View
B+
Retailer 10
-
$20,463 NZD
ZAR 186,315 ZAR
View
B+
Retailer 11
-
$21,611 NZD
$12,180 USD
View
B
Retailer 12
-
$25,962 NZD
$14,632 USD
View
B
Retailer 13
-
$34,404 NZD
$19,390 USD
View
Most Expensive
B
With Clarity
821641255 · Oct 31
$51,123 NZD
$28,813 USD
View
13 more retailers have this diamond
Prices start from $9,033 NZDSave up to $42,090 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
4.28ct Emerald
$9,033 NZD