CaratHunter
Plans
Cushion|Lab Grown|IGI

3.51ct F VVS1 Cushion Lab Grown Diamond

EX • F/VVS1 • IGI LG727580837

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

Certificate IGI LG727580837

Diamond specifications and retailer prices

From HK$6,528 HKD
$832 USD
As of November 1, 2026
Save HK$23,483 HKD (78%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: HK$30,011 HKD at Rare Carat · As of November 1, 2026
View at Rare Carat

About this 3.51ct lab-grown cushion diamond

This 3.51ct lab-grown cushion sits in the three to five carat band, graded F colour (colourless) and VVS1 clarity (very-very-slightly-included), with a top-tier cut grade and certified by IGI LG727580837 or 727580837. Listed at 16 retailers as of November 1, 2026, with prices from HK$6,528 to HK$30,011, a HK$23,483 spread on the same certified stone. Rare Carat lists it at HK$30,011. 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

3.51
Carat
F
Colour
VVS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.2°
Pavilion angle38.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG727580837
Dimensions8.62 × 8.55 × 5.72 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
8.62 mm8.55 mm3.51 ctF / VVS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG727580837
Side View
Table 62.0%Crown 35.2°Girdle: MED-THKPavilion 38.7°Culet: NoneDepth 66.9%

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$10,861 HKD|Low: HK$6,528 HKD|High: HK$26,884 HKD|Avg: HK$14,543 HKD|-0.5%
Retailer 1
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 3, 2026
Retailer 4HK$6,528 HKD
Retailer 2HK$6,763 HKD
Retailer 9HK$7,847 HKD
Retailer 15HK$9,847 HKD
Retailer 1HK$10,861 HKD
Retailer 3HK$10,961 HKD
Retailer 13HK$10,985 HKD
Retailer 11HK$11,130 HKD
Retailer 12HK$15,274 HKD
Retailer 8HK$15,720 HKD
Retailer 14HK$17,638 HKD
Retailer 6HK$21,045 HKD
Retailer 5HK$22,966 HKD
Retailer 7HK$23,326 HKD
Retailer 10HK$26,565 HKD

33 data points across 15 retailers

16 retailersHK$6,528 HKD to HK$30,011 HKD

A
Cheapest Retailer
-
HK$6,528 HKD
$832 USD
Final sale: no returns
Retailer 2
-
HK$6,763 HKD
$862 USD
View
Price last confirmed 16 days ago
A
Retailer 3
-
HK$7,847 HKD
£787 GBP
View
A
Retailer 4
-
HK$9,847 HKD
$1,255 USD
View
A
Retailer 5
-
HK$10,861 HKD
£1,090 GBP
View
A
Retailer 6
-
HK$10,961 HKD
$1,397 USD
View
A
Retailer 7
-
HK$10,985 HKD
$1,400 USD
View
A
Retailer 8
-
HK$11,130 HKD
€1,351 EUR
View
B+
Retailer 9
-
HK$15,274 HKD
A$2,995 AUD
View
B+
Retailer 10
-
HK$15,720 HKD
ZAR 32,367 ZAR
View
B+
Retailer 11
-
HK$17,638 HKD
$2,248 USD
View
B+
Retailer 12
-
HK$21,045 HKD
£2,112 GBP
View
B
Retailer 13
-
HK$22,966 HKD
$2,927 USD
View
B
Retailer 14
-
HK$23,326 HKD
$2,973 USD
View
B
Retailer 15
-
HK$26,565 HKD
£2,666 GBP
View
Most Expensive
B
Rare Carat
M6-31p1_l_727580837 · Nov 1
HK$30,011 HKD
$3,825 USD
View
15 more retailers have this diamond
Prices start from HK$6,528 HKDSave up to HK$23,483 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
3.51ct Cushion
HK$6,528 HKD