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Radiant|Lab Grown|IGI

1.72ct D SI1 Radiant Lab Grown Diamond

GD • D/SI1

Diamond specifications and retailer prices

From $440 SGD
£271 GBP
As of October 30, 2026
Save $1,317 SGD (75%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: $1,758 SGD at Rare Carat · As of October 28, 2026
View at Rare Carat

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. Listed at 3 retailers as of October 28, 2026, with prices from $440 to $1,758, a $1,317 spread on the same certified stone. Rare Carat lists it at $1,758. 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
OriginLab Grown
Grading LabIGI
Dimensions8.76 × 5.89 × 3.93 mm
L/W Ratio1.49
Top View
8.76 mm5.89 mm1.72 ctD / SI1
OriginLab Grown
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI
Side View
Table 62.0%CrownGirdle: MED-STKPavilionCulet: NoneDepth 66.7%

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: Oct 30
Current: $1,758 SGD|Low: $434 SGD|High: $1,777 SGD|Avg: $935 SGD|-1.1%
Rare Carat
Retailer 2
Retailer 3
October 30, 2026
Retailer 2$440 SGD
Retailer 3$725 SGD
Rare Carat$1,758 SGD

13 data points across 3 retailers

3 retailers$440 SGD to $1,758 SGD

B+
Cheapest Retailer
-
$440 SGD
£271 GBP
B+
Retailer 2
-
$725 SGD
$567 USD
View
Most Expensive
C
Rare Carat
E41I-50C_l_629439991 · Oct 28
$1,758 SGD
$1,375 USD
View
2 more retailers have this diamond
Prices start from $440 SGDSave up to $1,317 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+
1.72ct Radiant
$440 SGD