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Round|Lab Grown|IGI

1.50ct E SI1 Round Lab Grown Diamond

ID • E/SI1 • IGI LG776652956

Shape and cutting style on the report: Round brilliant

Certificate IGI LG776652956

Diamond specifications and retailer prices

From $216 USD
As of October 29, 2026
Save $1,029 USD (83%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $1,245 USD at Reve Diamonds · As of October 28, 2026
View at Reve Diamonds

About this 1.5ct lab-grown round diamond

This 1.5ct lab-grown round sits in the one-and-a-half to two carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG776652956 or 776652956. Listed at 20 retailers as of October 28, 2026, with prices from $216 to $1,245, a $1,029 spread on the same certified stone. Reve Diamonds lists it at $1,245. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.50
Carat
E
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.9°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG776652956
Dimensions7.27 × 7.33 × 4.54 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
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
7.27 mm7.33 mm1.50 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG776652956
Side View
Table 58.0%Crown 35.9°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 62.1%

Caratlytics Score

How it works →
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 29
Current: $495 USD|Low: $207 USD|High: $1,245 USD|Avg: $566 USD|+9.1%
Retailer 1
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Retailer 18
Reve Diamonds
October 29, 2026
Retailer 17$216 USD
Retailer 9$241 USD
Retailer 3$251 USD
Retailer 2$268 USD
Retailer 7$268 USD
Retailer 5$360 USD
Retailer 4$425 USD
Retailer 13$435 USD
Retailer 11$465 USD
Retailer 1$495 USD
Retailer 8$522 USD
Retailer 14$538 USD
Retailer 16$695 USD
Retailer 15$745 USD
Retailer 6$861 USD
Retailer 18$870 USD
Retailer 10$914 USD
Retailer 12$1,080 USD
Reve Diamonds$1,245 USD

39 data points across 19 retailers

20 retailers$216 USD to $1,245 USD

A
Cheapest Retailer
-
$216 USD
A
Retailer 2
-
$241 USD
View
Final sale: no returns
A
Retailer 3
-
$251 USD
View
A
Retailer 4
-
$268 USD
View
A
Retailer 5
-
$268 USD
View
B+
Retailer 6
-
$360 USD
View
A
Retailer 7
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$425 USD
View
A
Retailer 8
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$435 USD
€414 EUR
View
A
Retailer 9
-
$465 USD
£366 GBP
View
A
Retailer 10
-
$495 USD
£390 GBP
View
B+
Retailer 11
-
$522 USD
View
B+
Retailer 12
-
$538 USD
A$828 AUD
View
Retailer 13
-
$593 USD
View
Price last confirmed 30 days ago
B
Retailer 14
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$695 USD
View
B+
Retailer 15
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$745 USD
View
B
Retailer 16
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$861 USD
View
B
Retailer 17
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$870 USD
View
B
Retailer 18
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$914 USD
View
B
Retailer 19
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$1,080 USD
£850 GBP
View
Most Expensive
B
Reve Diamonds
DDFA18ECD · Oct 28
$1,245 USD
View
19 more retailers have this diamond
Prices start from $216 USDSave up to $1,029 USD

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
1.50ct Round
$216 USD