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Radiant|Lab Grown|IGI

1.63ct D SI1 Radiant Lab Grown Diamond

VG • D/SI1 • IGI LG797641220

Certificate IGI LG797641220

Diamond specifications and retailer prices

From €1,021 EUR
$1,141 USD
As of October 31, 2026
Save €375 EUR (27%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: €1,396 EUR at Zales · As of October 30, 2026
View at Zales

About this 1.63ct lab-grown radiant diamond

This 1.63ct 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 very-good cut grade and certified by IGI LG797641220 or 797641220. Listed at 4 retailers as of October 30, 2026, with prices from €1,021 to €1,396, a €375 spread on the same certified stone. Zales lists it at €1,396. 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

1.63
Carat
D
Color
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabIGI
CertificateIGI LG797641220
Dimensions7.81 × 5.96 × 4.07 mm
L/W Ratio1.31
Top View
7.81 mm5.96 mm1.63 ctD / SI1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG797641220
Side View
Table 66.0%CrownGirdle: MediumPavilionCulet: NoneDepth 68.3%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Oct 31
Current: €1,137 EUR|Low: €1,021 EUR|High: €1,880 EUR|Avg: €1,280 EUR|-39.5%
Retailer 1
Retailer 2
Retailer 3
Zales
October 1, 2026
Retailer 2€1,021 EUR
Retailer 1€1,137 EUR
Retailer 3€1,396 EUR
Zales€1,396 EUR

3 data points across 4 retailers

4 retailers€1,021 EUR to €1,396 EUR

B
Cheapest Retailer
-
€1,021 EUR
$1,141 USD
B
Retailer 2
-
€1,137 EUR
$1,270 USD
View
B
Retailer 3
-
€1,396 EUR
$1,560 USD
View
Most Expensive
B
Zales
528612164 · Oct 30
€1,396 EUR
$1,560 USD
View
3 more retailers have this diamond
Prices start from €1,021 EURSave up to €375 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
1.63ct Radiant
€1,021 EUR