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Cushion|Lab Grown|IGI

1.51ct F SI1 Cushion Lab Grown Diamond

VG • F/SI1 • IGI LG774618688

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG774618688

Diamond specifications and retailer prices

From HK$2,526 HKD
$322 USD
As of November 1, 2026
Save HK$6,222 HKD (71%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: HK$9,169 HKD at Reve Diamonds · As of October 25, 2026
View at Reve Diamonds

About this 1.51ct lab-grown cushion diamond

This 1.51ct lab-grown cushion sits in the one-and-a-half to two carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG774618688 or 774618688. Listed at 14 retailers as of October 26, 2026, with a 246% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

1.51
Carat
F
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle44.2°
Pavilion angle33.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG774618688
Dimensions7.18 × 5.56 × 3.94 mm
L/W Ratio1.29
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.18 mm5.56 mm1.51 ctF / SI1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG774618688
Side View
Table 64.0%Crown 44.2°Girdle: MED-THKPavilion 33.1°Culet: NoneDepth 70.9%

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$4,676 HKD|Low: HK$1,679 HKD|High: HK$9,625 HKD|Avg: HK$5,086 HKD|-1.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Reve Diamonds
November 2, 2026
Retailer 2HK$1,679 HKD
Retailer 11HK$2,406 HKD
Retailer 3HK$2,526 HKD
Retailer 5HK$3,131 HKD
Retailer 8HK$3,384 HKD
Retailer 6HK$3,703 HKD
Retailer 12HK$4,480 HKD
Retailer 1HK$4,676 HKD
Retailer 4HK$6,432 HKD
Retailer 10HK$6,591 HKD
Retailer 7HK$7,218 HKD
Retailer 9HK$8,749 HKD
Reve DiamondsHK$9,169 HKD

40 data points across 13 retailers

14 retailersHK$2,526 HKD to HK$8,749 HKD

Retailer 1
-
HK$2,406 HKD
£241 GBP
Price last confirmed 16 days ago
B+
Retailer 2
-
HK$2,526 HKD
$322 USD
View
A
Retailer 3
-
HK$3,131 HKD
€380 EUR
View
A
Retailer 4
-
HK$3,384 HKD
£340 GBP
View
B+
Retailer 5
-
HK$3,703 HKD
$472 USD
View
Retailer 6
-
HK$4,480 HKD
$571 USD
View
Price last confirmed 7 days ago
Retailer 7
-
HK$4,512 HKD
$575 USD
View
Price last confirmed 20 days ago
B+
Retailer 8
-
HK$4,676 HKD
$596 USD
View
B+
Retailer 9
-
HK$6,432 HKD
$820 USD
View
B+
Retailer 10
-
HK$6,591 HKD
$840 USD
View
Retailer 11
-
HK$6,748 HKD
$860 USD
View
Price last confirmed 39 days ago
B
Retailer 12
-
HK$7,218 HKD
$920 USD
View
B
Retailer 13
-
HK$8,749 HKD
£878 GBP
View
Most Expensive
Reve Diamonds
8532F276D · Oct 25
HK$9,169 HKD
$1,169 USD
View
Price last confirmed 8 days ago
13 more retailers have this diamond
Prices start from HK$2,526 HKDSave up to HK$6,222 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
1.51ct Cushion
HK$2,526 HKD