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Radiant|Lab Grown|IGI

1.55ct D SI1 Radiant Lab Grown Diamond

GD • D/SI1 • IGI LG514271363

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

Certificate IGI LG514271363

Diamond specifications and retailer prices

From €497 EUR
$555 USD
As of November 1, 2026
Save €1,804 EUR (78%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: €2,301 EUR at MOH London · As of October 26, 2026
View at MOH London

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 D colour (colourless) and SI1 clarity (slightly-included), with a standard cut grade and certified by IGI LG514271363 or 514271363. Listed at 14 retailers as of October 26, 2026, with prices from €497 to €2,301, a €1,804 spread on the same certified stone. MOH London lists it at €2,301. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.55
Carat
D
Color
SI1
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle42.2°
Pavilion angle30.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG514271363
Dimensions7.49 × 5.78 × 3.93 mm
L/W Ratio1.30
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
7.49 mm5.78 mm1.55 ctD / SI1
OriginLab Grown
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG514271363
Side View
Table 65.5%Crown 42.2°Girdle: MediumPavilion 30.2°Culet: NoneDepth 68.0%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: €2,301 EUR|Low: €355 EUR|High: €2,326 EUR|Avg: €921 EUR|-0.9%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 1, 2026
Retailer 10€444 EUR
Retailer 3€497 EUR
Retailer 4€497 EUR
Retailer 11€550 EUR
Retailer 5€552 EUR
Retailer 9€676 EUR
Retailer 6€802 EUR
Retailer 13€857 EUR
Retailer 2€908 EUR
Retailer 7€1,056 EUR
Retailer 12€1,447 EUR
Retailer 8€1,480 EUR
MOH London€2,301 EUR

43 data points across 13 retailers

14 retailers€497 EUR to €2,301 EUR

Retailer 1
-
€444 EUR
$496 USD
Price last confirmed 9 days ago
B+
Retailer 2
-
€497 EUR
$555 USD
View
Final sale: no returns
Retailer 3
-
€497 EUR
$555 USD
View
Price last confirmed 8 days ago
B+
Retailer 4
-
€550 EUR
$615 USD
View
B+
Retailer 5
-
€552 EUR
$617 USD
View
B
Retailer 6
-
€676 EUR
$755 USD
View
B
Retailer 7
-
€802 EUR
View
B
Retailer 8
-
€857 EUR
$957 USD
View
B
Retailer 9
-
€908 EUR
£799 GBP
View
B
Retailer 10
-
€1,056 EUR
$1,180 USD
View
B
Retailer 11
-
€1,279 EUR
£1,126 GBP
View
Retailer 12
-
€1,447 EUR
$1,617 USD
View
Price last confirmed 7 days ago
C
Retailer 13
-
€1,480 EUR
$1,653 USD
View
Most Expensive
B
MOH London
LG514271363 · Oct 26
€2,301 EUR
£2,024 GBP
View
13 more retailers have this diamond
Prices start from €497 EURSave up to €1,804 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.

B+
1.55ct Radiant
€497 EUR