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Round|Lab Grown|IGI

1.78ct F SI1 Round Lab Grown Diamond

ID • F/SI1 • IGI LG573372926

Shape and cutting style on the report: Round brilliant

Certificate IGI LG573372926

Diamond specifications and retailer prices

From $268 SGD
$210 USD
As of October 29, 2026
Save $2,621 SGD (91%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $2,889 SGD at Jared · As of October 28, 2026
View at Jared

About this 1.78ct lab-grown round diamond

This 1.78ct lab-grown round sits in the one-and-a-half to two carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG573372926 or 573372926. Listed at 11 retailers as of October 28, 2026, with prices from $268 to $2,889, a $2,621 spread on the same certified stone. Jared lists it at $2,889. 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

1.78
Carat
F
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.8°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG573372926
Dimensions7.78 × 7.83 × 4.74 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
7.78 mm7.83 mm1.78 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG573372926
Side View
Table 58.5%Crown 33.8°Girdle: MediumPavilion 40.7°Culet: NoneDepth 60.6%

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 29
Current: $1,484 SGD|Low: $222 SGD|High: $2,646 SGD|Avg: $1,031 SGD|-1.7%
Retailer 1
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 29, 2026
Retailer 12$268 SGD
Retailer 13$304 SGD
Retailer 11$312 SGD
Retailer 10$573 SGD
Retailer 6$680 SGD
Retailer 4$719 SGD
Retailer 5$787 SGD
Retailer 3$885 SGD
Retailer 7$1,076 SGD
Retailer 8$1,184 SGD
Retailer 1$1,484 SGD
Retailer 2$1,854 SGD
Retailer 9$2,582 SGD

36 data points across 13 retailers

11 retailers$268 SGD to $2,889 SGD

A
Cheapest Retailer
-
$268 SGD
$210 USD
A
Retailer 2
-
$304 SGD
$238 USD
View
Final sale: no returns
A
Retailer 3
-
$312 SGD
$244 USD
View
B+
Retailer 4
-
$573 SGD
$448 USD
View
A
Retailer 5
-
$680 SGD
£419 GBP
View
Retailer 6
-
$1,076 SGD
$842 USD
View
Price last confirmed 7 days ago
B+
Retailer 7
-
$1,184 SGD
$926 USD
View
B
Retailer 8
-
$1,484 SGD
£914 GBP
View
B
Retailer 9
-
$1,854 SGD
$1,450 USD
View
B
Retailer 10
-
$2,582 SGD
$2,020 USD
View
Most Expensive
B
Jared
150062141 · Oct 28
$2,889 SGD
$2,260 USD
View
10 more retailers have this diamond
Prices start from $268 SGDSave up to $2,621 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
1.78ct Round
$268 SGD