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Cushion|Lab Grown|IGI

6.18ct D IF Cushion Lab Grown Diamond

EX • D/IF • IGI LG754594320

Shape and cutting style on the report: Square cushion modified brilliant

Certificate IGI LG754594320

Diamond specifications and retailer prices

From $7,771 USD
As of October 30, 2026
Save $39,489 USD (84%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $47,260 USD at Do Amore Diamonds · As of October 31, 2026
View at Do Amore Diamonds

About this 6.18ct lab-grown cushion diamond

This 6.18ct 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 LG754594320 or 754594320. Listed at 13 retailers as of October 30, 2026, with prices from $7,771 to $47,260, a $39,489 spread on the same certified stone. Do Amore Diamonds lists it at $47,260. 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
D
Color
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.9°
Pavilion angle39°
OriginLab Grown
Grading LabIGI
CertificateIGI LG754594320
Dimensions10.87 × 10.50 × 7.01 mm
L/W Ratio1.04
Girdle conditionFaceted
Culet sizePointed
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
10.87 mm10.50 mm6.18 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG754594320
Side View
Table 61.0%Crown 33.9°Girdle: STK-THKPavilion 39°Culet: NoneDepth 66.8%

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: Oct 30
Current: $47,260 USD|Low: $6,789 USD|High: $52,960 USD|Avg: $23,434 USD|-10.8%
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
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Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
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Retailer 17
October 31, 2026
Retailer 13$7,771 USD
Retailer 5$8,683 USD
Retailer 14$8,725 USD
Retailer 12$10,173 USD
Retailer 17$10,615 USD
Retailer 4$16,248 USD
Retailer 2$16,522 USD
Retailer 11$17,751 USD
Retailer 10$17,810 USD
Retailer 16$18,875 USD
Retailer 8$19,843 USD
Retailer 15$24,430 USD
Retailer 3$32,804 USD
Retailer 7$34,197 USD
Retailer 9$42,473 USD
Retailer 6$46,033 USD
Do Amore Diamonds$47,260 USD

32 data points across 17 retailers

13 retailers$7,771 USD to $47,260 USD

A
Cheapest Retailer
-
$7,771 USD
A
Retailer 2
-
$8,683 USD
View
Final sale: no returns
A
Retailer 3
-
$8,725 USD
View
A
Retailer 4
-
$10,173 USD
View
Retailer 5
-
$10,615 USD
View
Price last confirmed 12 days ago
A
Retailer 6
-
$16,248 USD
View
A
Retailer 7
-
$16,522 USD
€15,735 EUR
View
A
Retailer 8
-
$17,751 USD
£13,977 GBP
View
A
Retailer 9
-
$17,810 USD
View
Retailer 10
-
$18,875 USD
A$29,039 AUD
View
Price last confirmed 9 days ago
B+
Retailer 11
-
$24,430 USD
View
Retailer 12
-
$32,804 USD
A$50,468 AUD
View
Price last confirmed 22 days ago
Most Expensive
B
Do Amore Diamonds
27-DCAF6E4E6 · Oct 31
$47,260 USD
View
12 more retailers have this diamond
Prices start from $7,771 USDSave up to $39,489 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 Cushion
$7,771 USD