CaratHunter
Plans
Cushion|Lab Grown|IGI

3.06ct F VS1 Cushion Lab Grown Diamond

ID • F/VS1 • IGI LG818686311

Shape and cutting style on the report: Antique cushion cut

Certificate IGI LG818686311

Diamond specifications and retailer prices

From HK$6,708 HKD
$855 USD
As of November 2, 2026
Save HK$30,167 HKD (82%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: HK$36,875 HKD at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 3.06ct lab-grown cushion diamond

This 3.06ct lab-grown cushion sits in the three to five carat band, graded F colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG818686311 or 818686311. Listed at 18 retailers as of October 31, 2026, with prices from HK$6,708 to HK$36,875, a HK$30,167 spread on the same certified stone. Brilliant Earth lists it at HK$36,875. 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

3.06
Carat
F
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle45.5°
Pavilion angle41.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818686311
Dimensions9.86 × 7.40 × 4.96 mm
L/W Ratio1.33
Girdle conditionFaceted
Culet sizeLarge
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
9.86 mm7.40 mm3.06 ctF / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818686311
Side View
Table 60.0%Crown 45.5°Girdle: STK-THKPavilion 41.3°Culet: LargeDepth 67.0%

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: HK$36,875 HKD|Low: HK$5,665 HKD|High: HK$46,211 HKD|Avg: HK$13,827 HKD|-20.2%
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
Retailer 15
November 2, 2026
Retailer 4HK$5,665 HKD
Retailer 13HK$6,708 HKD
Retailer 14HK$7,595 HKD
Retailer 8HK$8,502 HKD
Retailer 2HK$8,852 HKD
Retailer 5HK$9,854 HKD
Retailer 10HK$11,964 HKD
Retailer 12HK$12,804 HKD
Retailer 3HK$16,500 HKD
Retailer 15HK$16,941 HKD
Retailer 6HK$17,888 HKD
Retailer 9HK$18,084 HKD
Retailer 7HK$18,341 HKD
Retailer 11HK$24,621 HKD
Brilliant EarthHK$36,875 HKD

41 data points across 15 retailers

18 retailersHK$6,708 HKD to HK$36,875 HKD

Retailer 1
-
HK$4,566 HKD
$582 USD
Price last confirmed 34 days ago
Retailer 2
-
HK$5,115 HKD
$652 USD
View
Price last confirmed 39 days ago
Retailer 3
-
HK$5,594 HKD
$713 USD
View
Price last confirmed 34 days ago
A
Retailer 4
-
HK$6,708 HKD
$855 USD
View
A
Retailer 5
-
HK$7,595 HKD
$968 USD
View
A
Retailer 6
-
HK$8,502 HKD
€1,032 EUR
View
A
Retailer 7
-
HK$8,852 HKD
£888 GBP
View
A
Retailer 8
-
HK$9,854 HKD
$1,256 USD
View
B+
Retailer 9
-
HK$11,964 HKD
A$2,346 AUD
View
B+
Retailer 10
-
HK$12,804 HKD
$1,632 USD
View
Retailer 11
-
HK$14,899 HKD
$1,899 USD
View
Price last confirmed 32 days ago
Retailer 12
-
HK$16,500 HKD
£1,656 GBP
View
Price last confirmed 17 days ago
Retailer 13
-
HK$16,941 HKD
A$3,322 AUD
View
Price last confirmed 29 days ago
B+
Retailer 14
-
HK$17,888 HKD
SGD 3,081 SGD
View
B+
Retailer 15
-
HK$18,084 HKD
$2,305 USD
View
B+
Retailer 16
-
HK$18,341 HKD
$2,338 USD
View
B
Retailer 17
-
HK$24,621 HKD
£2,471 GBP
View
Most Expensive
B
Brilliant Earth
21728218A · Oct 31
HK$36,875 HKD
$4,700 USD
View
17 more retailers have this diamond
Prices start from HK$6,708 HKDSave up to HK$30,167 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
3.06ct Cushion
HK$6,708 HKD