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Cushion|Lab Grown|IGI

5.18ct D FL Cushion Lab Grown Diamond

ID • D/FL • IGI LG816608287

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG816608287

Diamond specifications and retailer prices

From $12,323 NZD
$6,945 USD
As of October 31, 2026
Save $62,021 NZD (83%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $74,343 NZD at Do Amore Diamonds · As of October 31, 2026
View at Do Amore Diamonds

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 LG816608287 or 816608287. Listed at 7 retailers as of October 31, 2026, with prices from $12,323 to $74,343, a $62,021 spread on the same certified stone. Do Amore Diamonds lists it at $74,343. 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 angle35.2°
Pavilion angle38.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG816608287
Dimensions11.31 × 9.35 × 6.53 mm
L/W Ratio1.21
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
11.31 mm9.35 mm5.18 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG816608287
Side View
Table 58.0%Crown 35.2°Girdle: MED-THKPavilion 38.8°Culet: NoneDepth 69.8%

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: Oct 31
Current: $74,343 NZD|Low: $12,323 NZD|High: $100,901 NZD|Avg: $42,231 NZD|-13.4%
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 31, 2026
Retailer 5$12,323 NZD
Retailer 4$13,937 NZD
Retailer 7$19,469 NZD
Retailer 2$24,227 NZD
Retailer 6$27,806 NZD
Retailer 3$28,921 NZD
Retailer 9$38,987 NZD
Do Amore Diamonds$74,343 NZD
Retailer 8$100,901 NZD

27 data points across 9 retailers

7 retailers$12,323 NZD to $74,343 NZD

A
Cheapest Retailer
-
$12,323 NZD
$6,945 USD
A
Retailer 2
-
$13,937 NZD
$7,855 USD
View
A
Retailer 3
-
$19,469 NZD
$10,973 USD
View
A
Retailer 4
-
$24,227 NZD
€13,004 EUR
View
A
Retailer 5
-
$27,806 NZD
£12,340 GBP
View
B+
Retailer 6
-
$28,921 NZD
$16,300 USD
View
Most Expensive
B
Do Amore Diamonds
27-E42EC17CA · Oct 31
$74,343 NZD
$41,900 USD
View
6 more retailers have this diamond
Prices start from $12,323 NZDSave up to $62,021 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
$12,323 NZD