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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 $1,459 SGD
$1,141 USD
As of October 31, 2026
Save $536 SGD (27%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: $1,994 SGD 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 $1,459 to $1,994, a $536 spread on the same certified stone. Zales lists it at $1,994. 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
Colour
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
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: $1,624 SGD|Low: $1,459 SGD|High: $2,685 SGD|Avg: $1,828 SGD|-39.5%
Retailer 1
Retailer 2
Retailer 3
Zales
October 1, 2026
Retailer 2$1,459 SGD
Retailer 1$1,624 SGD
Retailer 3$1,994 SGD
Zales$1,994 SGD

3 data points across 4 retailers

4 retailers$1,459 SGD to $1,994 SGD

B
Cheapest Retailer
-
$1,459 SGD
$1,141 USD
B
Retailer 2
-
$1,624 SGD
$1,270 USD
View
B
Retailer 3
-
$1,994 SGD
$1,560 USD
View
Most Expensive
B
Zales
528612164 · Oct 30
$1,994 SGD
$1,560 USD
View
3 more retailers have this diamond
Prices start from $1,459 SGDSave up to $536 SGD

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
$1,459 SGD