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 $5,091 USD
As of October 29, 2026
Save $23,722 USD (82%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $28,813 USD at With Clarity · As of October 30, 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 29, 2026, with prices from $5,091 to $28,813, a $23,722 spread on the same certified stone. With Clarity lists it at $28,813. 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
Color
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
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: $12,180 USD|Low: $5,091 USD|High: $33,433 USD|Avg: $13,499 USD|-46.0%
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
With Clarity
October 30, 2026
Retailer 11$5,091 USD
Retailer 13$6,432 USD
Retailer 12$6,822 USD
Retailer 6$7,045 USD
Retailer 5$8,150 USD
Retailer 4$8,365 USD
Retailer 8$8,925 USD
Retailer 2$10,164 USD
Retailer 9$11,280 USD
Retailer 7$11,533 USD
Retailer 1$12,180 USD
Retailer 3$14,632 USD
Retailer 10$19,390 USD
With Clarity$28,813 USD

42 data points across 14 retailers

14 retailers$5,091 USD to $28,813 USD

A
Cheapest Retailer
-
$5,091 USD
A
Retailer 2
-
$6,432 USD
View
A
Retailer 3
-
$6,822 USD
HK$53,300 HKD
View
A
Retailer 4
-
$7,045 USD
£5,547 GBP
View
Retailer 5
-
$8,150 USD
View
Price last confirmed 12 days ago
B+
Retailer 6
-
$8,365 USD
View
B+
Retailer 7
-
$8,925 USD
€8,500 EUR
View
B+
Retailer 8
-
$10,164 USD
View
B+
Retailer 9
-
$11,280 USD
£8,882 GBP
View
B+
Retailer 10
-
$11,533 USD
ZAR 186,315 ZAR
View
B+
Retailer 11
-
$12,180 USD
View
B
Retailer 12
-
$14,632 USD
View
B
Retailer 13
-
$19,390 USD
View
Most Expensive
B
With Clarity
821641255 · Oct 30
$28,813 USD
View
13 more retailers have this diamond
Prices start from $5,091 USDSave up to $23,722 USD

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
$5,091 USD