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Cushion|Lab Grown|IGI

5.18ct D FL Cushion Lab Grown Diamond

ID • D/FL • IGI LG846662161

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG846662161

Diamond specifications and retailer prices

From $12,243 NZD
$6,900 USD
As of November 1, 2026
Save $77,659 NZD (86%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $89,902 NZD at With Clarity · As of October 31, 2026
View at With Clarity

About this 5.18ct lab-grown cushion diamond

This 5.18ct lab-grown cushion sits in the over five carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG846662161 or 846662161. Listed at 10 retailers as of October 31, 2026, with prices from $12,243 to $89,902, a $77,659 spread on the same certified stone. With Clarity lists it at $89,902. 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

5.18
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.1°
Pavilion angle36.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG846662161
Dimensions12.69 × 8.97 × 5.95 mm
L/W Ratio1.41
Girdle conditionFaceted
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
12.69 mm8.97 mm5.18 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG846662161
Side View
Table 63.0%Crown 34.1°Girdle: MED-THKPavilion 36.4°Culet: NoneDepth 66.3%

Caratlytics Score

How it works →
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: Nov 1
Current: $14,240 NZD|Low: $12,243 NZD|High: $93,963 NZD|Avg: $30,408 NZD|-8.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
With Clarity
November 1, 2026
Retailer 2$12,243 NZD
Retailer 3$13,777 NZD
Retailer 1$14,240 NZD
Retailer 9$16,709 NZD
Retailer 5$18,932 NZD
Retailer 8$29,375 NZD
Retailer 6$30,050 NZD
Retailer 7$30,213 NZD
Retailer 4$31,245 NZD
With Clarity$89,902 NZD

11 data points across 10 retailers

10 retailers$12,243 NZD to $89,902 NZD

A
Cheapest Retailer
-
$12,243 NZD
$6,900 USD
A
Retailer 2
-
$13,777 NZD
$7,765 USD
View
A
Retailer 3
-
$14,240 NZD
£6,319 GBP
View
A
Retailer 4
-
$16,709 NZD
$9,417 USD
View
A
Retailer 5
-
$18,932 NZD
$10,670 USD
View
B+
Retailer 6
-
$29,375 NZD
£13,036 GBP
View
B+
Retailer 7
-
$30,050 NZD
€16,130 EUR
View
B+
Retailer 8
-
$30,213 NZD
$17,028 USD
View
B+
Retailer 9
-
$31,245 NZD
$17,610 USD
View
Most Expensive
B
With Clarity
846662161 · Oct 31
$89,902 NZD
$50,669 USD
View
9 more retailers have this diamond
Prices start from $12,243 NZDSave up to $77,659 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
5.18ct Cushion
$12,243 NZD