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 €450 EUR
$501 USD
As of October 25, 2026
Save €1,498 EUR (77%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: €1,948 EUR 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 €450 to €1,948, a €1,498 spread on the same certified stone. Helzberg Diamonds lists it at €1,948. 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

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A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 25
Current: €1,948 EUR|Low: €450 EUR|High: €1,959 EUR|Avg: €1,157 EUR|-0.6%
Helzberg Diamonds
Retailer 2
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Retailer 11
Retailer 12
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Retailer 17
October 29, 2026
Retailer 8€450 EUR
Retailer 10€479 EUR
Retailer 3€683 EUR
Retailer 4€712 EUR
Retailer 13€717 EUR
Retailer 12€736 EUR
Retailer 11€773 EUR
Retailer 5€860 EUR
Retailer 14€1,047 EUR
Retailer 15€1,085 EUR
Retailer 6€1,431 EUR
Retailer 7€1,479 EUR
Retailer 16€1,505 EUR
Retailer 17€1,566 EUR
Retailer 2€1,768 EUR
Retailer 9€1,904 EUR
Helzberg Diamonds€1,948 EUR

29 data points across 17 retailers

17 retailers€450 EUR to €1,948 EUR

A
Cheapest Retailer
-
€450 EUR
$501 USD
A
Retailer 2
-
€479 EUR
£420 GBP
View
A
Retailer 3
-
€683 EUR
$760 USD
View
A
Retailer 4
-
€712 EUR
$793 USD
View
A
Retailer 5
-
€717 EUR
View
A
Retailer 6
-
€736 EUR
£645 GBP
View
A
Retailer 7
-
€773 EUR
ZAR 13,911 ZAR
View
A
Retailer 8
-
€860 EUR
$957 USD
View
A
Retailer 9
-
€1,047 EUR
A$1,794 AUD
View
A
Retailer 10
-
€1,085 EUR
$1,208 USD
View
B+
Retailer 11
-
€1,431 EUR
SGD 2,153 SGD
View
B+
Retailer 12
-
€1,479 EUR
$1,646 USD
View
B+
Retailer 13
-
€1,505 EUR
$1,675 USD
View
Price last confirmed 10 days ago
B+
Retailer 14
-
€1,566 EUR
$1,743 USD
View
B+
Retailer 15
-
€1,768 EUR
£1,550 GBP
View
B+
Retailer 16
-
€1,904 EUR
$2,120 USD
View
Most Expensive
B+
Helzberg Diamonds
ZXZOHMMHMIJJ · Oct 29
€1,948 EUR
$2,169 USD
View
16 more retailers have this diamond
Prices start from €450 EURSave up to €1,498 EUR

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
€450 EUR