CaratHunter
Plans
Cushion|Lab Grown|IGI

3.10ct D FL Cushion Lab Grown Diamond

ID • D/FL • IGI LG780663284

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG780663284

Diamond specifications and retailer prices

From $3,125 AUD
$2,190 USD
As of November 2, 2026
Save $10,937 AUD (78%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $14,062 AUD at Blue Nile · As of October 31, 2026
View at Blue Nile

About this 3.1ct lab-grown cushion diamond

This 3.1ct lab-grown cushion sits in the three to five carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG780663284 or 780663284. Listed at 14 retailers as of October 31, 2026, with prices from $3,125 to $14,062, a $10,937 spread on the same certified stone. Blue Nile lists it at $14,062. 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

3.10
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.5°
Pavilion angle34.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG780663284
Dimensions9.99 × 7.87 × 5.12 mm
L/W Ratio1.27
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
9.99 mm7.87 mm3.10 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG780663284
Side View
Table 58.0%Crown 33.5°Girdle: MED-STKPavilion 34.9°Culet: NoneDepth 65.1%

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 2
Current: $14,062 AUD|Low: $3,125 AUD|High: $31,246 AUD|Avg: $9,411 AUD|-55.0%
Blue Nile
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
November 2, 2026
Retailer 11$3,125 AUD
Retailer 10$3,493 AUD
Retailer 14$3,945 AUD
Retailer 2$4,325 AUD
Retailer 8$4,749 AUD
Retailer 9$5,007 AUD
Retailer 3$7,304 AUD
Retailer 12$7,677 AUD
Retailer 4$8,544 AUD
Retailer 7$8,983 AUD
Retailer 6$9,204 AUD
Retailer 13$11,016 AUD
Retailer 5$13,299 AUD
Blue Nile$14,062 AUD

34 data points across 14 retailers

14 retailers$3,125 AUD to $14,062 AUD

A
Cheapest Retailer
-
$3,125 AUD
$2,190 USD
A
Retailer 2
-
$3,493 AUD
$2,448 USD
View
A
Retailer 3
-
$3,945 AUD
HK$21,600 HKD
View
A
Retailer 4
-
$4,325 AUD
£2,387 GBP
View
A
Retailer 5
-
$4,749 AUD
$3,328 USD
View
A
Retailer 6
-
$5,007 AUD
€3,342 EUR
View
B+
Retailer 7
-
$7,304 AUD
ZAR 82,691 ZAR
View
B+
Retailer 8
-
$7,677 AUD
$5,380 USD
View
B+
Retailer 9
-
$8,544 AUD
$5,988 USD
View
B+
Retailer 10
-
$8,983 AUD
£4,957 GBP
View
Retailer 11
-
$9,204 AUD
$6,450 USD
View
Price last confirmed 12 days ago
B+
Retailer 12
-
$11,016 AUD
$7,720 USD
View
B
Retailer 13
-
$13,299 AUD
$9,320 USD
View
Most Expensive
B
Blue Nile
29313962 · Oct 31
$14,062 AUD
$9,855 USD
View
13 more retailers have this diamond
Prices start from $3,125 AUDSave up to $10,937 AUD

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
3.10ct Cushion
$3,125 AUD