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Cushion|Lab Grown|IGI

5.18ct D IF Cushion Lab Grown Diamond

EX • D/IF • IGI LG754594315

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG754594315

Diamond specifications and retailer prices

From $5,374 USD
As of November 2, 2026
Save $29,586 USD (85%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $34,960 USD at Do Amore Diamonds · As of November 2, 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 IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG754594315 or 754594315. Listed at 13 retailers as of November 2, 2026, with prices from $5,374 to $34,960, a $29,586 spread on the same certified stone. Do Amore Diamonds lists it at $34,960. 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
Color
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.2°
Pavilion angle37.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG754594315
Dimensions11.71 × 11.71 × 7.95 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizeLarge
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
11.71 mm11.71 mm5.18 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG754594315
Side View
Table 63.0%Crown 35.2°Girdle: STK-THKPavilion 37.5°Culet: LargeDepth 64.3%

Caratlytics Score

How it works →
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: Nov 2
Current: $34,960 USD|Low: $5,374 USD|High: $39,590 USD|Avg: $14,568 USD|-11.7%
Do Amore 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
November 1, 2026
Retailer 10$5,374 USD
Retailer 13$5,825 USD
Retailer 5$6,090 USD
Retailer 12$7,564 USD
Retailer 4$8,885 USD
Retailer 7$9,108 USD
Retailer 9$10,950 USD
Retailer 2$13,240 USD
Retailer 6$13,573 USD
Retailer 11$14,820 USD
Retailer 3$16,299 USD
Retailer 8$23,330 USD
Do Amore Diamonds$34,960 USD

32 data points across 13 retailers

13 retailers$5,374 USD to $34,960 USD

A
Cheapest Retailer
-
$5,374 USD
A
Retailer 2
-
$5,825 USD
View
A
Retailer 3
-
$6,090 USD
View
Final sale: no returns
A
Retailer 4
-
$7,564 USD
View
Retailer 5
-
$8,885 USD
View
Price last confirmed 14 days ago
A
Retailer 6
-
$9,108 USD
View
A
Retailer 7
-
$10,950 USD
€10,429 EUR
View
A
Retailer 8
-
$13,240 USD
£10,425 GBP
View
A
Retailer 9
-
$13,573 USD
A$20,881 AUD
View
A
Retailer 10
-
$14,820 USD
View
B+
Retailer 11
-
$16,299 USD
View
B+
Retailer 12
-
$23,330 USD
A$35,893 AUD
View
Most Expensive
B
Do Amore Diamonds
27-6D217A5A1 · Nov 2
$34,960 USD
View
12 more retailers have this diamond
Prices start from $5,374 USDSave up to $29,586 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
5.18ct Cushion
$5,374 USD