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Radiant|Lab Grown|IGI

1.72ct D SI1 Radiant Lab Grown Diamond

GD • D/SI1 • IGI LG646481247

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

Certificate IGI LG646481247

Diamond specifications and retailer prices

From €383 EUR
As of October 31, 2026
Save €835 EUR (69%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: €1,217 EUR at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 1.72ct lab-grown radiant diamond

This 1.72ct 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 LG646481247 or 646481247. Listed at 15 retailers as of October 31, 2026, with prices from €383 to €1,217, a €835 spread on the same certified stone. Brilliant Earth lists it at €1,217. 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

1.72
Carat
D
Colour
SI1
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle43.1°
Pavilion angle35.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG646481247
Dimensions8.37 × 5.94 × 4.08 mm
L/W Ratio1.41
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
8.37 mm5.94 mm1.72 ctD / SI1
OriginLab Grown
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG646481247
Side View
Table 65.0%Crown 43.1°Girdle: MediumPavilion 35.9°Culet: NoneDepth 68.7%

Caratlytics Score

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

Price History

Last verified: Oct 31
Current: €1,217 EUR|Low: €207 EUR|High: €2,166 EUR|Avg: €653 EUR|-43.8%
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
Retailer 14
November 1, 2026
Retailer 3€207 EUR
Retailer 4€218 EUR
Retailer 10€221 EUR
Retailer 12€248 EUR
Retailer 8€383 EUR
Retailer 13€386 EUR
Retailer 2€405 EUR
Retailer 5€525 EUR
Retailer 6€550 EUR
Retailer 7€712 EUR
Retailer 11€714 EUR
Retailer 9€1,040 EUR
Brilliant Earth€1,217 EUR
Retailer 14€1,235 EUR

35 data points across 14 retailers

15 retailers€383 EUR to €1,217 EUR

Retailer 1
-
€207 EUR
$231 USD
Price last confirmed 35 days ago
Retailer 2
-
€218 EUR
$244 USD
View
Price last confirmed 35 days ago
Retailer 3
-
€221 EUR
$247 USD
View
Price last confirmed 20 days ago
Retailer 4
-
€221 EUR
$247 USD
View
Price last confirmed 7 days ago
Retailer 5
-
€248 EUR
£218 GBP
View
Price last confirmed 16 days ago
B+
Retailer 6
-
€383 EUR
View
B
Retailer 7
-
€386 EUR
$431 USD
View
B+
Retailer 8
-
€405 EUR
£357 GBP
View
B+
Retailer 9
-
€525 EUR
$587 USD
View
B+
Retailer 10
-
€550 EUR
$614 USD
View
B
Retailer 11
-
€712 EUR
$795 USD
View
B
Retailer 12
-
€714 EUR
$798 USD
View
B
Retailer 13
-
€769 EUR
£677 GBP
View
B
Retailer 14
-
€1,040 EUR
£915 GBP
View
Most Expensive
B
Brilliant Earth
11433133A · Oct 31
€1,217 EUR
$1,360 USD
View
14 more retailers have this diamond
Prices start from €383 EURSave up to €835 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+
1.72ct Radiant
€383 EUR