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Emerald|Lab Grown|IGI

4.21ct D FL Emerald Lab Grown Diamond

ID • D/FL • IGI LG799676801

Shape and cutting style on the report: Emerald cut

Certificate IGI LG799676801

Diamond specifications and retailer prices

From £3,360 GBP
$4,502 USD
As of October 30, 2026
Save £19,754 GBP (85%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: £23,114 GBP at Do Amore Diamonds · As of October 29, 2026
View at Do Amore Diamonds

About this 4.21ct lab-grown emerald diamond

This 4.21ct 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 LG799676801 or 799676801. Listed at 22 retailers as of October 29, 2026, with prices from £3,360 to £23,114, a £19,754 spread on the same certified stone. Do Amore Diamonds lists it at £23,114. 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

4.21
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle30.7°
Pavilion angle37.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG799676801
Dimensions11.20 × 7.67 × 4.89 mm
L/W Ratio1.46
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
11.20 mm7.67 mm4.21 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG799676801
Side View
Table 58.0%Crown 30.7°Girdle: MediumPavilion 37.2°Culet: LargeDepth 63.8%

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: £5,501 GBP|Low: £3,226 GBP|High: £15,011 GBP|Avg: £5,855 GBP|+0.7%
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
October 30, 2026
Retailer 15£3,360 GBP
Retailer 10£3,496 GBP
Retailer 5£3,521 GBP
Retailer 7£3,670 GBP
Retailer 8£3,762 GBP
Retailer 4£3,897 GBP
Retailer 17£3,897 GBP
Retailer 14£3,926 GBP
Retailer 13£4,977 GBP
Retailer 3£5,107 GBP
Retailer 1£5,501 GBP
Retailer 18£6,030 GBP
Retailer 9£6,085 GBP
Retailer 16£6,180 GBP
Retailer 12£8,801 GBP
Retailer 11£9,156 GBP
Retailer 2£9,852 GBP
Retailer 6£15,011 GBP

43 data points across 18 retailers

22 retailers£3,360 GBP to £23,114 GBP

A
Cheapest Retailer
-
£3,360 GBP
$4,502 USD
A
Retailer 2
-
£3,496 GBP
$4,684 USD
View
A
Retailer 3
-
£3,521 GBP
$4,718 USD
View
A
Retailer 4
-
£3,670 GBP
$4,918 USD
View
A
Retailer 5
-
£3,762 GBP
$5,041 USD
View
Final sale: no returns
A
Retailer 6
-
£3,897 GBP
$5,222 USD
View
Retailer 7
-
£3,897 GBP
$5,222 USD
View
Price last confirmed 14 days ago
A
Retailer 8
-
£3,926 GBP
$5,260 USD
View
A
Retailer 9
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£4,977 GBP
$6,669 USD
View
A
Retailer 10
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£5,107 GBP
$6,843 USD
View
A
Retailer 11
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£5,187 GBP
HK$54,300 HKD
View
A
Retailer 12
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£5,501 GBP
View
B+
Retailer 13
-
£6,030 GBP
$8,079 USD
View
B+
Retailer 14
-
£6,085 GBP
View
Retailer 15
-
£6,180 GBP
$8,280 USD
View
Price last confirmed 23 days ago
B+
Retailer 16
-
£8,801 GBP
View
B+
Retailer 17
-
£9,156 GBP
ZAR 198,195 ZAR
View
B
Retailer 18
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£9,852 GBP
$13,200 USD
View
B
Retailer 19
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£10,728 GBP
$14,375 USD
View
B
Retailer 20
-
£15,011 GBP
SGD 27,179 SGD
View
B
Retailer 21
-
£15,440 GBP
$20,688 USD
View
Most Expensive
B
Do Amore Diamonds
27-049F2460B · Oct 29
£23,114 GBP
$30,970 USD
View
21 more retailers have this diamond
Prices start from £3,360 GBPSave up to £19,754 GBP

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
4.21ct Emerald
£3,360 GBP