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Cushion|Lab Grown|IGI

3.10ct D FL Cushion Lab Grown Diamond

ID • D/FL • IGI LG831684278

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

Certificate IGI LG831684278

Diamond specifications and retailer prices

From HK$17,880 HKD
$2,279 USD
As of October 31, 2026
Save HK$86,311 HKD (83%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: HK$104,191 HKD at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

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 LG831684278 or 831684278. Listed at 14 retailers as of October 31, 2026, with prices from HK$17,880 to HK$104,191, a HK$86,311 spread on the same certified stone. Brilliant Earth lists it at HK$104,191. 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 angle35.6°
Pavilion angle33.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG831684278
Dimensions8.33 × 8.32 × 5.22 mm
L/W Ratio1.00
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
8.33 mm8.32 mm3.10 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG831684278
Side View
Table 59.0%Crown 35.6°Girdle: MED-THKPavilion 33.7°Culet: NoneDepth 62.7%

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: Oct 31
Current: HK$104,191 HKD|Low: HK$17,880 HKD|High: HK$104,191 HKD|Avg: HK$41,037 HKD
Brilliant Earth
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 1, 2026
Retailer 13HK$17,880 HKD
Retailer 9HK$19,544 HKD
Retailer 11HK$19,810 HKD
Retailer 14HK$21,391 HKD
Retailer 7HK$22,039 HKD
Retailer 8HK$25,484 HKD
Retailer 2HK$26,479 HKD
Retailer 10HK$28,759 HKD
Retailer 4HK$35,153 HKD
Retailer 5HK$43,782 HKD
Retailer 12HK$47,804 HKD
Retailer 6HK$51,424 HKD
Retailer 3HK$61,925 HKD
Brilliant EarthHK$104,191 HKD

5 data points across 14 retailers

14 retailersHK$17,880 HKD to HK$104,191 HKD

A
Cheapest Retailer
-
HK$17,880 HKD
$2,279 USD
Final sale: no returns
A
Retailer 2
-
HK$19,544 HKD
$2,491 USD
View
A
Retailer 3
-
HK$19,810 HKD
$2,525 USD
View
A
Retailer 4
-
HK$21,391 HKD
View
A
Retailer 5
-
HK$22,039 HKD
£2,212 GBP
View
A
Retailer 6
-
HK$25,484 HKD
£2,558 GBP
View
A
Retailer 7
-
HK$26,479 HKD
$3,375 USD
View
A
Retailer 8
-
HK$28,759 HKD
€3,491 EUR
View
B+
Retailer 9
-
HK$35,153 HKD
£3,528 GBP
View
B+
Retailer 10
-
HK$43,782 HKD
ZAR 90,152 ZAR
View
B+
Retailer 11
-
HK$47,804 HKD
$6,093 USD
View
B+
Retailer 12
-
HK$51,424 HKD
£5,161 GBP
View
B
Retailer 13
-
HK$61,925 HKD
SGD 10,666 SGD
View
Most Expensive
B
Brilliant Earth
22341166A · Oct 31
HK$104,191 HKD
$13,280 USD
View
13 more retailers have this diamond
Prices start from HK$17,880 HKDSave up to HK$86,311 HKD

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
HK$17,880 HKD