Radiant|Lab Grown|IGI

1.55ct G SI1 Radiant Lab Grown Diamond

EX • G/SI1 • IGI LG619423774

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

Certificate IGI LG619423774

Diamond specifications and retailer prices

From €341 EUR
£300 GBP
As of October 27, 2026
Save €572 EUR (63%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: €913 EUR at Brilliant Earth · As of October 26, 2026
View at Brilliant Earth

About this 1.55ct lab-grown radiant diamond

This 1.55ct lab-grown radiant sits in the one-and-a-half to two carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG619423774 or 619423774. Listed at 13 retailers as of October 26, 2026, with prices from €341 to €913, a €572 spread on the same certified stone. Brilliant Earth lists it at €913. 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

1.55
Carat
G
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle48.7°
Pavilion angle33.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG619423774
Dimensions8.45 × 5.58 × 3.75 mm
L/W Ratio1.51
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
8.45 mm5.58 mm1.55 ctG / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG619423774
Side View
Table 64.0%Crown 48.7°Girdle: MediumPavilion 33.9°Culet: NoneDepth 67.2%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 27
Current: €913 EUR|Low: €149 EUR|High: €1,003 EUR|Avg: €417 EUR|-8.9%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
October 27, 2026
Retailer 10€155 EUR
Retailer 6€173 EUR
Retailer 3€180 EUR
Retailer 4€192 EUR
Retailer 11€192 EUR
Retailer 8€323 EUR
Retailer 2€341 EUR
Retailer 13€342 EUR
Retailer 9€490 EUR
Retailer 5€494 EUR
Retailer 12€617 EUR
Retailer 7€898 EUR
Brilliant Earth€913 EUR

39 data points across 13 retailers

13 retailers€341 EUR to €913 EUR

Retailer 1
-
€155 EUR
$173 USD
Price last confirmed 9 days ago
Retailer 2
-
€180 EUR
$201 USD
View
Price last confirmed 8 days ago
Retailer 3
-
€192 EUR
$214 USD
View
Price last confirmed 7 days ago
Retailer 4
-
€192 EUR
$214 USD
View
Price last confirmed 7 days ago
Retailer 5
-
€323 EUR
View
Price last confirmed 9 days ago
A
Retailer 6
-
€341 EUR
£300 GBP
View
Retailer 7
-
€342 EUR
$382 USD
View
Price last confirmed 7 days ago
B+
Retailer 8
-
€448 EUR
$500 USD
View
B+
Retailer 9
-
€490 EUR
$547 USD
View
B+
Retailer 10
-
€494 EUR
$552 USD
View
Retailer 11
-
€617 EUR
$689 USD
View
Price last confirmed 7 days ago
B
Retailer 12
-
€898 EUR
£790 GBP
View
Most Expensive
B
Brilliant Earth
14997064A · Oct 26
€913 EUR
$1,020 USD
View
12 more retailers have this diamond
Prices start from €341 EURSave up to €572 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
1.55ct Radiant
€341 EUR