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Cushion|Lab Grown|IGI

12.15ct F VS1 Cushion Lab Grown Diamond

ID • F/VS1 • IGI LG577377305

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG577377305

Diamond specifications and retailer prices

From HK$31,957 HKD
$4,073 USD
As of November 1, 2026
Save HK$148,739 HKD (82%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: HK$180,696 HKD at Brilliant Earth · As of November 2, 2026
View at Brilliant Earth

About this 12.15ct lab-grown cushion diamond

This 12.15ct lab-grown cushion sits in the over five carat band, graded F colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG577377305 or 577377305. Listed at 15 retailers as of November 1, 2026, with prices from HK$31,957 to HK$180,696, a HK$148,739 spread on the same certified stone. Brilliant Earth lists it at HK$180,696. 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

12.15
Carat
F
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle40.4°
Pavilion angle34.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG577377305
Dimensions16.36 × 11.70 × 7.73 mm
L/W Ratio1.40
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
16.36 mm11.70 mm12.15 ctF / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG577377305
Side View
Table 64.0%Crown 40.4°Girdle: MED-THKPavilion 34.7°Culet: NoneDepth 66.1%

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 1
Current: HK$180,696 HKD|Low: HK$22,816 HKD|High: HK$186,266 HKD|Avg: HK$60,822 HKD|-3.0%
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 6HK$31,957 HKD
Retailer 15HK$33,103 HKD
Retailer 5HK$34,695 HKD
Retailer 14HK$41,427 HKD
Retailer 2HK$42,330 HKD
Retailer 10HK$42,888 HKD
Retailer 13HK$50,758 HKD
Retailer 4HK$50,819 HKD
Retailer 3HK$51,329 HKD
Retailer 8HK$54,324 HKD
Retailer 7HK$59,445 HKD
Retailer 11HK$61,975 HKD
Retailer 9HK$78,273 HKD
Retailer 12HK$83,364 HKD
Brilliant EarthHK$180,696 HKD

29 data points across 15 retailers

15 retailersHK$31,957 HKD to HK$180,696 HKD

A
Cheapest Retailer
-
HK$31,957 HKD
$4,073 USD
Final sale: no returns
Retailer 2
-
HK$33,103 HKD
$4,219 USD
View
Price last confirmed 21 days ago
B+
Retailer 3
-
HK$42,330 HKD
$5,395 USD
View
A
Retailer 4
-
HK$42,888 HKD
£4,304 GBP
View
Retailer 5
-
HK$50,758 HKD
ZAR 104,511 ZAR
View
Price last confirmed 18 days ago
B+
Retailer 6
-
HK$50,819 HKD
£5,100 GBP
View
B+
Retailer 7
-
HK$51,329 HKD
$6,542 USD
View
B+
Retailer 8
-
HK$54,324 HKD
€6,594 EUR
View
Retailer 9
-
HK$59,445 HKD
$7,576 USD
View
Price last confirmed 54 days ago
B+
Retailer 10
-
HK$61,975 HKD
A$12,152 AUD
View
B+
Retailer 11
-
HK$78,273 HKD
$9,976 USD
View
B
Retailer 12
-
HK$83,364 HKD
A$16,346 AUD
View
B
Retailer 13
-
HK$91,895 HKD
$11,712 USD
View
B
Retailer 14
-
HK$116,768 HKD
$14,882 USD
View
Most Expensive
B
Brilliant Earth
14103520A · Nov 2
HK$180,696 HKD
$23,030 USD
View
14 more retailers have this diamond
Prices start from HK$31,957 HKDSave up to HK$148,739 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
12.15ct Cushion
HK$31,957 HKD