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Round|Lab Grown|IGI

1.72ct D SI1 Round Lab Grown Diamond

ID • D/SI1 • IGI LG455032750

Shape and cutting style on the report: Round brilliant

Certificate IGI LG455032750

Diamond specifications and retailer prices

From $336 SGD
$263 USD
As of October 30, 2026
Save $1,172 SGD (78%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $1,509 SGD at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 1.72ct lab-grown round diamond

This 1.72ct lab-grown round sits in the one-and-a-half to two carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG455032750 or 455032750. Listed at 15 retailers as of October 29, 2026, with prices from $336 to $1,509, a $1,172 spread on the same certified stone. Brilliant Earth lists it at $1,509. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.72
Carat
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.6°
Pavilion angle41.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG455032750
Dimensions7.66 × 7.62 × 4.76 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory grown diamond was created by high pressure high temperature process (HPHT).
Top View
7.66 mm7.62 mm1.72 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG455032750
Side View
Table 59.5%Crown 35.6°GirdlePavilion 41.3°Culet: NoneDepth 62.4%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: $1,509 SGD|Low: $336 SGD|High: $1,682 SGD|Avg: $790 SGD
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 31, 2026
Retailer 11$336 SGD
Retailer 4$415 SGD
Retailer 12$505 SGD
Retailer 7$585 SGD
Retailer 3$626 SGD
Retailer 5$675 SGD
Retailer 2$705 SGD
Retailer 9$712 SGD
Retailer 8$983 SGD
Retailer 10$1,268 SGD
Retailer 6$1,500 SGD
Brilliant Earth$1,509 SGD

43 data points across 12 retailers

15 retailers$336 SGD to $1,509 SGD

Retailer 1
-
$335 SGD
$262 USD
Price last confirmed 38 days ago
A
Retailer 2
-
$336 SGD
$263 USD
View
Final sale: no returns
Retailer 3
-
$389 SGD
$304 USD
View
Price last confirmed 38 days ago
Retailer 4
-
$409 SGD
$320 USD
View
Price last confirmed 35 days ago
B+
Retailer 5
-
$505 SGD
$395 USD
View
Retailer 6
-
$585 SGD
£361 GBP
View
Price last confirmed 14 days ago
A
Retailer 7
-
$675 SGD
€503 EUR
View
A
Retailer 8
-
$705 SGD
£434 GBP
View
A
Retailer 9
-
$712 SGD
$557 USD
View
B+
Retailer 10
-
$983 SGD
$769 USD
View
Retailer 11
-
$1,163 SGD
$910 USD
View
Price last confirmed 39 days ago
B
Retailer 12
-
$1,268 SGD
$992 USD
View
Retailer 13
-
$1,333 SGD
$1,043 USD
View
Price last confirmed 40 days ago
B
Retailer 14
-
$1,500 SGD
£924 GBP
View
Most Expensive
B
Brilliant Earth
14242415A · Oct 29
$1,509 SGD
$1,180 USD
View
14 more retailers have this diamond
Prices start from $336 SGDSave up to $1,172 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.

A
1.72ct Round
$336 SGD