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Radiant|Lab Grown|IGI

1.73ct D SI1 Radiant Lab Grown Diamond

GD • D/SI1 • IGI LG508155765

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

Certificate IGI LG508155765

Diamond specifications and retailer prices

From $975 SGD
$763 USD
As of October 30, 2026
Save $1,866 SGD (66%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $4,280 SGD at MOH London · As of October 29, 2026
View at MOH London

About this 1.73ct lab-grown radiant diamond

This 1.73ct 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 LG508155765 or 508155765. Listed at 13 retailers as of October 25, 2026, with a 191% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

1.73
Carat
D
Colour
SI1
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle46.3°
Pavilion angle29.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG508155765
Dimensions7.73 × 5.93 × 4.09 mm
L/W Ratio1.30
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
7.73 mm5.93 mm1.73 ctD / SI1
OriginLab Grown
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG508155765
Side View
Table 66.0%Crown 46.3°Girdle: Slightly ThickPavilion 29.9°Culet: NoneDepth 69.0%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Oct 30
Current: $4,280 SGD|Low: $697 SGD|High: $4,314 SGD|Avg: $1,740 SGD|+0.5%
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
October 31, 2026
Retailer 10$872 SGD
Retailer 3$949 SGD
Retailer 4$975 SGD
Retailer 5$1,004 SGD
Retailer 11$1,011 SGD
Retailer 7$1,240 SGD
Retailer 2$1,565 SGD
Retailer 6$1,618 SGD
Retailer 13$1,644 SGD
Retailer 8$2,026 SGD
Retailer 9$2,581 SGD
Retailer 12$2,842 SGD
MOH London$4,280 SGD

43 data points across 13 retailers

13 retailers$975 SGD to $2,842 SGD

Retailer 1
-
$872 SGD
$682 USD
Price last confirmed 8 days ago
Retailer 2
-
$949 SGD
$742 USD
View
Price last confirmed 7 days ago
B
Retailer 3
-
$975 SGD
$763 USD
View
Final sale: no returns
B
Retailer 4
-
$1,004 SGD
$785 USD
View
B
Retailer 5
-
$1,011 SGD
$791 USD
View
B
Retailer 6
-
$1,240 SGD
$970 USD
View
B
Retailer 7
-
$1,565 SGD
€1,166 EUR
View
B
Retailer 8
-
$1,618 SGD
£997 GBP
View
B
Retailer 9
-
$1,644 SGD
$1,286 USD
View
B
Retailer 10
-
$2,026 SGD
$1,585 USD
View
C
Retailer 11
-
$2,581 SGD
$2,019 USD
View
C
Retailer 12
-
$2,842 SGD
$2,223 USD
View
Most Expensive
MOH London
LG508155765 · Oct 29
$4,280 SGD
£2,636 GBP
View
Price under review
12 more retailers have this diamond
Prices start from $975 SGDSave up to $1,866 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
1.73ct Radiant
$975 SGD