Radiant|Lab Grown|IGI

1.15ct E SI1 Radiant Lab Grown Diamond

ID • E/SI1 • IGI LG574325826

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG574325826

Diamond specifications and retailer prices

From $150 USD
As of October 30, 2026
Save $1,290 USD (90%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $1,440 USD at Do Amore Diamonds · As of October 29, 2026
View at Do Amore Diamonds

About this 1.15ct lab-grown radiant diamond

This 1.15ct lab-grown radiant sits in the classic one-carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG574325826 or 574325826. Listed at 12 retailers as of October 29, 2026, with prices from $150 to $1,440, a $1,290 spread on the same certified stone. Do Amore Diamonds lists it at $1,440. 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

1.15
Carat
E
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle44.7°
Pavilion angle34.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG574325826
Dimensions7.39 × 5.14 × 3.42 mm
L/W Ratio1.44
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
7.39 mm5.14 mm1.15 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG574325826
Side View
Table 65.0%Crown 44.7°Girdle: MED-STKPavilion 34.6°Culet: NoneDepth 66.5%

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 30
Current: $1,440 USD|Low: $118 USD|High: $1,440 USD|Avg: $530 USD|+1.4%
Do Amore 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
October 30, 2026
Retailer 11$150 USD
Retailer 15$168 USD
Retailer 14$174 USD
Retailer 2$266 USD
Retailer 6$332 USD
Retailer 13$342 USD
Retailer 3$386 USD
Retailer 7$473 USD
Retailer 9$530 USD
Retailer 10$630 USD
Retailer 12$659 USD
Retailer 4$687 USD
Retailer 5$690 USD
Retailer 8$959 USD
Do Amore Diamonds$1,440 USD

38 data points across 15 retailers

12 retailers$150 USD to $1,440 USD

A
Cheapest Retailer
-
$150 USD
A
Retailer 2
-
$168 USD
View
Final sale: no returns
A
Retailer 3
-
$174 USD
View
A
Retailer 4
-
$266 USD
£210 GBP
View
B+
Retailer 5
-
$342 USD
View
Retailer 6
-
$460 USD
View
Price last confirmed 9 days ago
Retailer 7
-
$468 USD
View
Price last confirmed 51 days ago
Retailer 8
-
$530 USD
View
Price last confirmed 9 days ago
B+
Retailer 9
-
$630 USD
View
B+
Retailer 10
-
$659 USD
View
B
Retailer 11
-
$959 USD
£755 GBP
View
Most Expensive
B
Do Amore Diamonds
27-0866E438A · Oct 29
$1,440 USD
View
11 more retailers have this diamond
Prices start from $150 USDSave up to $1,290 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
1.15ct Radiant
$150 USD