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Emerald|Lab Grown|IGI

4.45ct D FL Emerald Lab Grown Diamond

EX • D/FL • IGI LG780663842

Shape and cutting style on the report: Emerald cut

Certificate IGI LG780663842

Diamond specifications and retailer prices

From £3,962 GBP
$5,276 USD
As of October 29, 2026
Save £13,640 GBP (77%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £17,602 GBP at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 4.45ct lab-grown emerald diamond

This 4.45ct 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 LG780663842 or 780663842. Listed at 11 retailers as of October 29, 2026, with prices from £3,962 to £17,602, a £13,640 spread on the same certified stone. Brilliant Earth lists it at £17,602. 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

4.45
Carat
D
Colour
FL
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.3°
Pavilion angle39.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG780663842
Dimensions10.87 × 7.71 × 5.18 mm
L/W Ratio1.41
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
10.87 mm7.71 mm4.45 ctD / FL
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG780663842
Side View
Table 63.0%Crown 36.3°Girdle: Slightly ThickPavilion 39.7°Culet: LargeDepth 67.2%

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: £17,602 GBP|Low: £3,962 GBP|High: £18,150 GBP|Avg: £9,731 GBP|-3.0%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 30, 2026
Retailer 7£3,962 GBP
Retailer 9£5,172 GBP
Retailer 8£5,325 GBP
Retailer 2£5,381 GBP
Retailer 3£6,529 GBP
Retailer 4£6,968 GBP
Retailer 5£8,640 GBP
Retailer 11£11,424 GBP
Retailer 6£15,141 GBP
Retailer 10£16,872 GBP
Brilliant Earth£17,602 GBP

41 data points across 11 retailers

11 retailers£3,962 GBP to £17,602 GBP

A
Cheapest Retailer
-
£3,962 GBP
$5,276 USD
A
Retailer 2
-
£5,172 GBP
$6,887 USD
View
A
Retailer 3
-
£5,325 GBP
HK$55,400 HKD
View
A
Retailer 4
-
£5,381 GBP
View
B+
Retailer 5
-
£6,529 GBP
$8,695 USD
View
B+
Retailer 6
-
£6,968 GBP
€8,837 EUR
View
B+
Retailer 7
-
£8,640 GBP
View
B
Retailer 8
-
£11,424 GBP
$15,214 USD
View
B
Retailer 9
-
£15,141 GBP
$20,162 USD
View
B
Retailer 10
-
£16,872 GBP
$22,468 USD
View
Most Expensive
B
Brilliant Earth
19712132A · Oct 29
£17,602 GBP
$23,440 USD
View
10 more retailers have this diamond
Prices start from £3,962 GBPSave up to £13,640 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
4.45ct Emerald
£3,962 GBP