CaratHunter
Plans
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 $642 SGD
$501 USD
As of October 25, 2026
Save $2,139 SGD (77%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $2,781 SGD at Helzberg Diamonds · As of October 29, 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 October 25, 2026, with prices from $642 to $2,781, a $2,139 spread on the same certified stone. Helzberg Diamonds lists it at $2,781. 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: Oct 25
Current: $2,781 SGD|Low: $642 SGD|High: $2,796 SGD|Avg: $1,651 SGD|-0.6%
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
October 29, 2026
Retailer 8$642 SGD
Retailer 11$683 SGD
Retailer 3$974 SGD
Retailer 4$1,017 SGD
Retailer 2$1,031 SGD
Retailer 13$1,051 SGD
Retailer 12$1,104 SGD
Retailer 5$1,227 SGD
Retailer 14$1,495 SGD
Retailer 15$1,549 SGD
Retailer 6$2,043 SGD
Retailer 7$2,111 SGD
Retailer 16$2,148 SGD
Retailer 17$2,235 SGD
Retailer 10$2,524 SGD
Retailer 9$2,718 SGD
Helzberg Diamonds$2,781 SGD

29 data points across 17 retailers

17 retailers$642 SGD to $2,781 SGD

A
Cheapest Retailer
-
$642 SGD
$501 USD
A
Retailer 2
-
$683 SGD
£420 GBP
View
A
Retailer 3
-
$974 SGD
$760 USD
View
A
Retailer 4
-
$1,017 SGD
$793 USD
View
A
Retailer 5
-
$1,031 SGD
€766 EUR
View
A
Retailer 6
-
$1,051 SGD
£645 GBP
View
A
Retailer 7
-
$1,104 SGD
ZAR 13,911 ZAR
View
A
Retailer 8
-
$1,227 SGD
$957 USD
View
A
Retailer 9
-
$1,495 SGD
A$1,794 AUD
View
A
Retailer 10
-
$1,549 SGD
$1,208 USD
View
B+
Retailer 11
-
$2,043 SGD
View
B+
Retailer 12
-
$2,111 SGD
$1,646 USD
View
B+
Retailer 13
-
$2,148 SGD
$1,675 USD
View
Price last confirmed 10 days ago
B+
Retailer 14
-
$2,235 SGD
$1,743 USD
View
B+
Retailer 15
-
$2,524 SGD
£1,550 GBP
View
B+
Retailer 16
-
$2,718 SGD
$2,120 USD
View
Most Expensive
B+
Helzberg Diamonds
ZXZOHMMHMIJJ · Oct 29
$2,781 SGD
$2,169 USD
View
16 more retailers have this diamond
Prices start from $642 SGDSave up to $2,139 SGD

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
$642 SGD