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Round|Lab Grown|IGI

4.30ct D IF Round Lab Grown Diamond

EX • D/IF • IGI LG7521905977

Certificate IGI LG7521905977

Diamond specifications and retailer prices

From £18,127 GBP
$24,140 USD
As of October 29, 2026
1 retailer carries this diamond
Only listing: £18,127 GBP at Brilliant Earth
Only one retailer lists this diamond right now, and it is shown above, so there is nothing to unlock. Similar diamonds are carried by several retailers.
View at Brilliant Earth

About this 4.3ct lab-grown round diamond

This 4.3ct lab-grown round 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 LG7521905977 or 7521905977. Listed at a single retailer as of October 29, 2026. If it later appears at another store, Carat Hunter will surface the price comparison automatically. 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

4.30
Carat
D
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG7521905977
Dimensions10.49 × 10.47 × 6.37 mm
L/W Ratio1.00
Star length50%
Lower girdle75%
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Minor Details of Polish
Top View
10.49 mm10.47 mm4.30 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG7521905977
Side View
Table 58.0%Crown 34°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 60.8%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Oct 29
Current: £18,127 GBP|Low: £14,868 GBP|High: £19,667 GBP|Avg: £17,647 GBP|-7.8%
October 4, 2026
Brilliant Earth£18,127 GBP

6 data points across 1 retailer

1 retailer

B
Brilliant Earth
16087909Y · Oct 29
£18,127 GBP
$24,140 USD
View

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B
4.30ct Round
£18,127 GBP