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Cushion|Lab Grown|IGI

0.51ct E VVS1 Cushion Lab Grown Diamond

GD • E/VVS1 • IGI LG691513964

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG691513964

Diamond specifications and retailer prices

From HK$1,161 HKD
$148 USD
As of October 30, 2026
Save HK$3,837 HKD (77%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: HK$4,998 HKD at Riddles Jewelry · As of October 31, 2026
View at Riddles Jewelry

About this 0.51ct lab-grown cushion diamond

This 0.51ct lab-grown cushion sits in the half to three-quarter carat band, graded E colour (colourless) and VVS1 clarity (very-very-slightly-included), with a standard cut grade and certified by IGI LG691513964 or 691513964. Listed at 6 retailers as of October 30, 2026, with prices from HK$1,161 to HK$4,998, a HK$3,837 spread on the same certified stone. Riddles Jewelry lists it at HK$4,998. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

0.51
Carat
E
Colour
VVS1
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.2°
Pavilion angle35°
OriginLab Grown
Grading LabIGI
CertificateIGI LG691513964
Dimensions5.56 × 4.04 × 2.77 mm
L/W Ratio1.38
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
5.56 mm4.04 mm0.51 ctE / VVS1
OriginLab Grown
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG691513964
Side View
Table 61.0%Crown 35.2°Girdle: MED-THKPavilion 35°Culet: NoneDepth 68.6%

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 30
Current: HK$4,239 HKD|Low: HK$871 HKD|High: HK$9,729 HKD|Avg: HK$4,020 HKD|+8.1%
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
Riddles Jewelry
October 19, 2026
Retailer 10HK$1,161 HKD
Retailer 13HK$2,110 HKD
Retailer 9HK$2,134 HKD
Retailer 8HK$2,181 HKD
Retailer 7HK$2,570 HKD
Retailer 5HK$2,886 HKD
Retailer 6HK$3,892 HKD
Retailer 3HK$3,907 HKD
Retailer 1HK$4,239 HKD
Retailer 11HK$4,925 HKD
Riddles JewelryHK$4,998 HKD
Retailer 12HK$5,396 HKD
Retailer 4HK$5,426 HKD
Retailer 2HK$5,592 HKD
Retailer 14HK$9,729 HKD

10 data points across 15 retailers

6 retailersHK$1,161 HKD to HK$4,998 HKD

A
Cheapest Retailer
-
HK$1,161 HKD
$148 USD
Final sale: no returns
B+
Retailer 2
-
HK$2,134 HKD
$272 USD
View
B+
Retailer 3
-
HK$2,181 HKD
$278 USD
View
B+
Retailer 4
-
HK$2,570 HKD
$328 USD
View
B
Retailer 5
-
HK$4,239 HKD
CA$750 CAD
View
Most Expensive
B
Riddles Jewelry
1966220238 · Oct 31
HK$4,998 HKD
$637 USD
View
5 more retailers have this diamond
Prices start from HK$1,161 HKDSave up to HK$3,837 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
0.51ct Cushion
HK$1,161 HKD