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Cushion|Lab Grown|IGI

5.99ct D FL Cushion Lab Grown Diamond

ID • D/FL • IGI LG784644562

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG784644562

Diamond specifications and retailer prices

From $9,748 USD
As of November 1, 2026
Save $21,587 USD (69%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $31,335 USD at Frank Darling · As of October 31, 2026
View at Frank Darling

About this 5.99ct lab-grown cushion diamond

This 5.99ct 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 LG784644562 or 784644562. Listed at 11 retailers as of October 31, 2026, with prices from $9,748 to $31,335, a $21,587 spread on the same certified stone. Frank Darling lists it at $31,335. 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

5.99
Carat
D
Color
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.5°
Pavilion angle35.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG784644562
Dimensions11.97 × 9.62 × 6.42 mm
L/W Ratio1.24
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
11.97 mm9.62 mm5.99 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG784644562
Side View
Table 61.0%Crown 34.5°Girdle: STK-THKPavilion 35.9°Culet: NoneDepth 66.7%

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: $31,335 USD|Low: $9,239 USD|High: $88,340 USD|Avg: $27,371 USD|+0.5%
Frank Darling
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 31, 2026
Retailer 8$9,748 USD
Retailer 10$11,100 USD
Retailer 12$11,185 USD
Retailer 7$11,987 USD
Retailer 3$13,027 USD
Retailer 11$18,767 USD
Retailer 6$19,569 USD
Retailer 5$21,170 USD
Retailer 2$21,961 USD
Frank Darling$31,335 USD
Retailer 9$60,390 USD
Retailer 4$88,340 USD

30 data points across 12 retailers

11 retailers$9,748 USD to $31,335 USD

A
Cheapest Retailer
-
$9,748 USD
A
Retailer 2
-
$11,100 USD
View
Retailer 3
-
$11,185 USD
View
Price last confirmed 13 days ago
A
Retailer 4
-
$11,987 USD
View
A
Retailer 5
-
$13,027 USD
View
Final sale: no returns
B+
Retailer 6
-
$18,767 USD
View
B+
Retailer 7
-
$19,569 USD
£15,409 GBP
View
B+
Retailer 8
-
$21,170 USD
View
B+
Retailer 9
-
$21,961 USD
€20,915 EUR
View
Most Expensive
B
Frank Darling
P83H-16EL · Oct 31
$31,335 USD
View
9 more retailers have this diamond
Prices start from $9,748 USDSave up to $21,587 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
5.99ct Cushion
$9,748 USD