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Round|Lab Grown|IGI

4.18ct D IF Round Lab Grown Diamond

ID • D/IF • IGI LG683520148

Shape and cutting style on the report: Round brilliant

Certificate IGI LG683520148

Diamond specifications and retailer prices

From €1,650 EUR
£1,452 GBP
As of October 30, 2026
Save €12,501 EUR (88%) vs most expensive(unlock to see where)
28 retailers carry this diamond
Most expensive: €14,151 EUR at Brilliant Earth · As of October 24, 2026
View at Brilliant Earth

About this 4.18ct lab-grown round diamond

This 4.18ct 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 LG683520148 or 683520148. Listed at 28 retailers as of October 24, 2026, with prices from €1,650 to €14,151, a €12,501 spread on the same certified stone. Brilliant Earth lists it at €14,151. 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

4.18
Carat
D
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.6°
Pavilion angle40.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG683520148
Dimensions10.53 × 10.48 × 6.25 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
HEARTS & ARROWS 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
10.53 mm10.48 mm4.18 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG683520148
Side View
Table 58.0%Crown 33.6°Girdle: MediumPavilion 40.4°Culet: NoneDepth 59.5%

Caratlytics Score

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A+
Exceptional
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: €11,761 EUR|Low: €1,645 EUR|High: €14,151 EUR|Avg: €4,377 EUR|-16.9%
Brilliant Earth
Retailer 2
Retailer 3
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Retailer 6
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Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
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Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
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Retailer 21
Retailer 22
October 31, 2026
Retailer 16€1,650 EUR
Retailer 14€1,834 EUR
Retailer 6€1,861 EUR
Retailer 8€1,927 EUR
Retailer 15€1,995 EUR
Retailer 13€2,077 EUR
Retailer 21€2,129 EUR
Retailer 5€2,521 EUR
Retailer 2€2,916 EUR
Retailer 20€3,021 EUR
Retailer 4€3,203 EUR
Retailer 3€3,242 EUR
Retailer 18€4,165 EUR
Retailer 17€4,529 EUR
Retailer 12€4,565 EUR
Retailer 10€5,193 EUR
Retailer 19€5,415 EUR
Retailer 9€5,465 EUR
Retailer 7€6,084 EUR
Retailer 11€7,293 EUR
Retailer 22€11,430 EUR
Brilliant Earth€11,761 EUR

29 data points across 22 retailers

28 retailers€1,650 EUR to €14,151 EUR

A+
Cheapest Retailer
-
€1,650 EUR
£1,452 GBP
Retailer 2
-
€1,834 EUR
$2,049 USD
View
Price last confirmed 8 days ago
A
Retailer 3
-
€1,861 EUR
$2,079 USD
View
Final sale: no returns
A
Retailer 4
-
€1,927 EUR
$2,153 USD
View
Retailer 5
-
€1,995 EUR
$2,229 USD
View
Price last confirmed 10 days ago
A
Retailer 6
-
€2,077 EUR
$2,320 USD
View
Retailer 7
-
€2,128 EUR
$2,377 USD
View
Price last confirmed 20 days ago
A
Retailer 8
-
€2,129 EUR
$2,378 USD
View
A
Retailer 9
-
€2,521 EUR
HK$22,000 HKD
View
A
Retailer 10
-
€2,916 EUR
£2,565 GBP
View
Retailer 11
-
€2,924 EUR
$3,267 USD
View
Price last confirmed 9 days ago
A
Retailer 12
-
€3,021 EUR
$3,375 USD
View
A
Retailer 13
-
€3,203 EUR
$3,578 USD
View
A
Retailer 14
-
€3,242 EUR
$3,622 USD
View
A
Retailer 15
-
€4,165 EUR
View
A
Retailer 16
-
€4,529 EUR
ZAR 81,735 ZAR
View
Retailer 17
-
€4,565 EUR
A$7,847 AUD
View
Price last confirmed 8 days ago
A
Retailer 18
-
€5,193 EUR
$5,802 USD
View
B+
Retailer 19
-
€5,415 EUR
$6,050 USD
View
A
Retailer 20
-
€5,465 EUR
$6,105 USD
View
B+
Retailer 21
-
€5,985 EUR
$6,687 USD
View
B+
Retailer 22
-
€6,084 EUR
£5,352 GBP
View
B+
Retailer 23
-
€7,293 EUR
SGD 11,011 SGD
View
B+
Retailer 24
-
€7,443 EUR
$8,315 USD
View
Retailer 25
-
€8,435 EUR
£7,420 GBP
View
Price last confirmed 21 days ago
B
Retailer 26
-
€11,430 EUR
$12,770 USD
View
B+
Retailer 27
-
€11,761 EUR
$13,140 USD
View
Most Expensive
B
Brilliant Earth
13152316A · Oct 24
€14,151 EUR
$15,810 USD
View
27 more retailers have this diamond
Prices start from €1,650 EURSave up to €12,501 EUR

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+
4.18ct Round
€1,650 EUR