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Princess|Lab Grown|IGI

1.78ct F SI1 Princess Lab Grown Diamond

GD • F/SI1 • IGI LG528235175

Shape and cutting style on the report: Princess cut

Certificate IGI LG528235175

Diamond specifications and retailer prices

From $638 SGD
$499 USD
As of November 1, 2026
Save $2,751 SGD (81%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $3,389 SGD at Do Amore Diamonds · As of November 2, 2026
View at Do Amore Diamonds

About this 1.78ct lab-grown princess diamond

This 1.78ct lab-grown princess sits in the one-and-a-half to two carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a standard cut grade and certified by IGI LG528235175 or 528235175. Listed at 13 retailers as of November 1, 2026, with prices from $638 to $3,389, a $2,751 spread on the same certified stone. Do Amore Diamonds lists it at $3,389. 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

1.78
Carat
F
Colour
SI1
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle40.5°
Pavilion angle39.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG528235175
Dimensions6.75 × 6.60 × 4.71 mm
L/W Ratio1.02
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
6.75 mm6.60 mm1.78 ctF / SI1
OriginLab Grown
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG528235175
Side View
Table 69.5%Crown 40.5°Girdle: MediumPavilion 39.1°Culet: NoneDepth 71.4%

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: Nov 1
Current: $3,389 SGD|Low: $599 SGD|High: $3,389 SGD|Avg: $1,273 SGD
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 2, 2026
Retailer 8$638 SGD
Retailer 6$639 SGD
Retailer 4$767 SGD
Retailer 10$775 SGD
Retailer 2$936 SGD
Retailer 12$1,225 SGD
Retailer 9$1,285 SGD
Retailer 7$1,455 SGD
Retailer 3$1,712 SGD
Retailer 11$1,887 SGD
Retailer 5$2,095 SGD
Do Amore Diamonds$3,389 SGD

36 data points across 12 retailers

13 retailers$638 SGD to $3,389 SGD

Retailer 1
-
$301 SGD
$235 USD
Price last confirmed 41 days ago
Retailer 2
-
$367 SGD
$287 USD
View
Price last confirmed 40 days ago
B+
Retailer 3
-
$638 SGD
$499 USD
View
B+
Retailer 4
-
$639 SGD
$500 USD
View
B+
Retailer 5
-
$775 SGD
$606 USD
View
B
Retailer 6
-
$936 SGD
£576 GBP
View
B
Retailer 7
-
$1,225 SGD
$958 USD
View
B
Retailer 8
-
$1,285 SGD
$1,005 USD
View
B
Retailer 9
-
$1,455 SGD
$1,138 USD
View
B
Retailer 10
-
$1,712 SGD
$1,339 USD
View
B
Retailer 11
-
$1,887 SGD
$1,476 USD
View
C
Retailer 12
-
$2,095 SGD
£1,290 GBP
View
Most Expensive
C
Do Amore Diamonds
27-0988B7928 · Nov 2
$3,389 SGD
$2,650 USD
View
12 more retailers have this diamond
Prices start from $638 SGDSave up to $2,751 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+
1.78ct Princess
$638 SGD