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Cushion|Lab Grown|IGI

1.51ct G IF Cushion Lab Grown Diamond

ID • G/IF • IGI LG816616233

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG816616233

Diamond specifications and retailer prices

From HK$4,157 HKD
£417 GBP
As of November 1, 2026
Save HK$12,860 HKD (76%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: HK$17,017 HKD at Helzberg Diamonds · As of November 2, 2026
View at Helzberg 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 G colour (near-colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG816616233 or 816616233. Listed at 17 retailers as of November 1, 2026, with prices from HK$4,157 to HK$17,017, a HK$12,860 spread on the same certified stone. Helzberg Diamonds lists it at HK$17,017. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.51
Carat
G
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.4°
Pavilion angle36.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG816616233
Dimensions8.56 × 5.85 × 3.86 mm
L/W Ratio1.46
Girdle conditionFaceted
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
8.56 mm5.85 mm1.51 ctG / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG816616233
Side View
Table 59.0%Crown 35.4°Girdle: MED-THKPavilion 36.4°Culet: NoneDepth 66.0%

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 1
Current: HK$17,017 HKD|Low: HK$3,931 HKD|High: HK$17,017 HKD|Avg: HK$9,942 HKD
Helzberg Diamonds
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
Retailer 16
Retailer 17
November 2, 2026
Retailer 8HK$3,931 HKD
Retailer 11HK$4,157 HKD
Retailer 3HK$5,963 HKD
Retailer 4HK$6,222 HKD
Retailer 12HK$6,277 HKD
Retailer 10HK$6,407 HKD
Retailer 2HK$6,780 HKD
Retailer 5HK$7,508 HKD
Retailer 14HK$9,154 HKD
Retailer 16HK$9,478 HKD
Retailer 6HK$12,500 HKD
Retailer 7HK$12,916 HKD
Retailer 17HK$13,142 HKD
Retailer 13HK$13,675 HKD
Retailer 15HK$15,444 HKD
Retailer 9HK$16,633 HKD
Helzberg DiamondsHK$17,017 HKD

33 data points across 17 retailers

17 retailersHK$4,157 HKD to HK$17,017 HKD

Retailer 1
-
HK$3,931 HKD
$501 USD
Price last confirmed 8 days ago
A
Retailer 2
-
HK$4,157 HKD
£417 GBP
View
A
Retailer 3
-
HK$5,963 HKD
$760 USD
View
A
Retailer 4
-
HK$6,222 HKD
$793 USD
View
A
Retailer 5
-
HK$6,277 HKD
€762 EUR
View
A
Retailer 6
-
HK$6,407 HKD
£643 GBP
View
A
Retailer 7
-
HK$6,780 HKD
ZAR 13,960 ZAR
View
A
Retailer 8
-
HK$7,508 HKD
$957 USD
View
A
Retailer 9
-
HK$9,154 HKD
A$1,795 AUD
View
A
Retailer 10
-
HK$9,478 HKD
$1,208 USD
View
B+
Retailer 11
-
HK$12,500 HKD
SGD 2,153 SGD
View
B+
Retailer 12
-
HK$12,916 HKD
$1,646 USD
View
Retailer 13
-
HK$13,142 HKD
$1,675 USD
View
Price last confirmed 14 days ago
B+
Retailer 14
-
HK$13,675 HKD
$1,743 USD
View
B+
Retailer 15
-
HK$15,444 HKD
£1,550 GBP
View
B+
Retailer 16
-
HK$16,633 HKD
$2,120 USD
View
Most Expensive
B+
Helzberg Diamonds
ZXZOHMMHMIJJ · Nov 2
HK$17,017 HKD
$2,169 USD
View
16 more retailers have this diamond
Prices start from HK$4,157 HKDSave up to HK$12,860 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$4,157 HKD