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Round|Lab Grown|IGI

6.18ct E IF Round Lab Grown Diamond

ID • E/IF • IGI LG660401846

Shape and cutting style on the report: Round brilliant

Certificate IGI LG660401846

Diamond specifications and retailer prices

From $4,648 USD
As of October 29, 2026
Save $14,641 USD (76%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $21,629 USD at Novita Diamonds · As of October 8, 2026
View at Novita Diamonds

About this 6.18ct lab-grown round diamond

This 6.18ct lab-grown round sits in the over five carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG660401846 or 660401846. Listed at 21 retailers as of October 29, 2026, with a 315% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

6.18
Carat
E
Color
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.4°
Pavilion angle41.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG660401846
Dimensions12.01 × 11.94 × 7.19 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
12.01 mm11.94 mm6.18 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG660401846
Side View
Table 59.0%Crown 33.4°Girdle: THN-MEDPavilion 41.2°Culet: NoneDepth 60.1%

Caratlytics Score

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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: $21,629 USD|Low: $4,648 USD|High: $21,629 USD|Avg: $10,189 USD|+1.2%
Novita Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
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Retailer 10
Retailer 11
Retailer 12
Retailer 13
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Retailer 15
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Retailer 19
Retailer 20
October 30, 2026
Retailer 8$4,648 USD
Retailer 12$5,116 USD
Retailer 15$5,144 USD
Retailer 4$5,205 USD
Retailer 16$5,392 USD
Retailer 20$5,665 USD
Retailer 10$6,020 USD
Retailer 5$6,413 USD
Retailer 18$6,738 USD
Retailer 2$6,979 USD
Retailer 11$7,101 USD
Retailer 7$7,875 USD
Retailer 3$10,112 USD
Retailer 13$10,433 USD
Retailer 9$10,764 USD
Retailer 14$11,224 USD
Retailer 19$14,466 USD
Retailer 17$14,987 USD
Retailer 6$19,289 USD
Novita Diamonds$21,629 USD

44 data points across 20 retailers

21 retailers$4,648 USD to $19,289 USD

A
Cheapest Retailer
-
$4,648 USD
A
Retailer 2
-
$5,116 USD
View
A
Retailer 3
-
$5,144 USD
View
A
Retailer 4
-
$5,205 USD
View
Final sale: no returns
A
Retailer 5
-
$5,392 USD
View
Retailer 6
-
$5,663 USD
View
Price last confirmed 14 days ago
A
Retailer 7
-
$5,665 USD
View
Retailer 8
-
$6,020 USD
View
Price last confirmed 9 days ago
A
Retailer 9
-
$6,413 USD
HK$50,100 HKD
View
A
Retailer 10
-
$6,738 USD
View
A
Retailer 11
-
$6,979 USD
£5,495 GBP
View
A
Retailer 12
-
$7,101 USD
View
A
Retailer 13
-
$7,875 USD
View
A
Retailer 14
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$10,112 USD
View
A
Retailer 15
-
$10,433 USD
ZAR 168,539 ZAR
View
Retailer 16
-
$10,764 USD
A$16,560 AUD
View
Price last confirmed 8 days ago
A
Retailer 17
-
$11,224 USD
£8,838 GBP
View
A
Retailer 18
-
$14,466 USD
View
A
Retailer 19
-
$14,987 USD
View
B+
Retailer 20
-
$19,289 USD
View
Most Expensive
Novita Diamonds
cert_660401846 · Oct 8
$21,629 USD
A$33,275 AUD
View
Price last confirmed 22 days ago
20 more retailers have this diamond
Prices start from $4,648 USDSave up to $14,641 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
6.18ct Round
$4,648 USD