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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 $8,247 NZD
$4,648 USD
As of October 29, 2026
Save $29,660 NZD (78%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $37,907 NZD at Novita Diamonds · As of November 1, 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 prices from $8,247 to $37,907, a $29,660 spread on the same certified stone. Novita Diamonds lists it at $37,907. 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
Colour
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
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: $37,907 NZD|Low: $8,247 NZD|High: $38,376 NZD|Avg: $17,088 NZD|-0.0%
Novita Diamonds
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
Retailer 19
Retailer 20
November 1, 2026
Retailer 11$8,247 NZD
Retailer 14$8,643 NZD
Retailer 18$9,127 NZD
Retailer 7$9,235 NZD
Retailer 19$9,567 NZD
Retailer 5$10,051 NZD
Retailer 2$10,664 NZD
Retailer 8$11,378 NZD
Retailer 3$11,955 NZD
Retailer 15$12,218 NZD
Retailer 13$12,382 NZD
Retailer 10$13,973 NZD
Retailer 6$17,942 NZD
Retailer 16$18,510 NZD
Retailer 12$19,099 NZD
Retailer 17$19,915 NZD
Retailer 4$25,667 NZD
Retailer 20$26,591 NZD
Retailer 9$34,225 NZD
Novita Diamonds$37,907 NZD

40 data points across 20 retailers

21 retailers$8,247 NZD to $37,907 NZD

A
Cheapest Retailer
-
$8,247 NZD
$4,648 USD
A
Retailer 2
-
$8,643 NZD
$4,871 USD
View
A
Retailer 3
-
$9,127 NZD
$5,144 USD
View
A
Retailer 4
-
$9,235 NZD
$5,205 USD
View
Final sale: no returns
A
Retailer 5
-
$9,567 NZD
$5,392 USD
View
Retailer 6
-
$10,048 NZD
$5,663 USD
View
Price last confirmed 16 days ago
A
Retailer 7
-
$10,051 NZD
$5,665 USD
View
Retailer 8
-
$10,664 NZD
$6,010 USD
View
A
Retailer 9
-
$11,378 NZD
HK$50,100 HKD
View
A
Retailer 10
-
$11,955 NZD
$6,738 USD
View
A
Retailer 11
-
$12,218 NZD
$6,886 USD
View
A
Retailer 12
-
$12,382 NZD
£5,495 GBP
View
A
Retailer 13
-
$13,973 NZD
$7,875 USD
View
A
Retailer 14
-
$17,942 NZD
$10,112 USD
View
A
Retailer 15
-
$18,510 NZD
ZAR 168,539 ZAR
View
Retailer 16
-
$19,099 NZD
A$16,560 AUD
View
Price last confirmed 10 days ago
A
Retailer 17
-
$19,915 NZD
£8,838 GBP
View
A
Retailer 18
-
$25,667 NZD
$14,466 USD
View
A
Retailer 19
-
$26,591 NZD
$14,987 USD
View
B+
Retailer 20
-
$34,225 NZD
$19,289 USD
View
Most Expensive
B+
Novita Diamonds
cert_660401846 · Nov 1
$37,907 NZD
A$32,868 AUD
View
20 more retailers have this diamond
Prices start from $8,247 NZDSave up to $29,660 NZD

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
$8,247 NZD