Princess|Lab Grown|IGI

1.78ct G SI2 Princess Lab Grown Diamond

GD • G/SI2 • IGI LG494167484

Shape and cutting style on the report: Princess cut

Certificate IGI LG494167484

Diamond specifications and retailer prices

From $898 USD
As of October 30, 2026
Save $312 USD (26%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $1,210 USD at The Diamond Guys · As of October 30, 2026
View at The Diamond Guys

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 G colour (near-colourless) and SI2 clarity (slightly-included), with a standard cut grade and certified by IGI LG494167484 or 494167484. Listed at 11 retailers as of October 30, 2026, with prices from $898 to $1,210, a $312 spread on the same certified stone. The Diamond Guys lists it at $1,210. 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
G
Color
SI2
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabIGI
CertificateIGI LG494167484
Dimensions6.65 × 6.54 × 4.64 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
6.65 mm6.54 mm1.78 ctG / SI2
OriginLab Grown
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG494167484
Side View
Table 72.0%CrownGirdle: Slightly ThickPavilionCulet: NoneDepth 70.9%

Caratlytics Score

How it works →
B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: $1,020 USD|Low: $215 USD|High: $1,210 USD|Avg: $828 USD|-1.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
The Diamond Guys
October 18, 2026
Retailer 4$215 USD
Retailer 6$457 USD
Retailer 3$543 USD
Retailer 2$861 USD
Retailer 7$898 USD
Retailer 1$1,020 USD
Retailer 5$1,195 USD
The Diamond Guys$1,210 USD

16 data points across 8 retailers

11 retailers$898 USD to $1,210 USD

Retailer 1
-
$215 USD
Price last confirmed 20 days ago
Retailer 2
-
$267 USD
View
Price last confirmed 23 days ago
Retailer 3
-
$267 USD
View
Price last confirmed 19 days ago
Retailer 4
-
$457 USD
View
Price last confirmed 17 days ago
Retailer 5
-
$543 USD
£428 GBP
View
Price last confirmed 16 days ago
Retailer 6
-
$861 USD
View
Price last confirmed 15 days ago
B
Retailer 7
-
$898 USD
View
Retailer 8
-
$947 USD
View
Price last confirmed 24 days ago
B
Retailer 9
-
$1,020 USD
View
Retailer 10
-
$1,195 USD
£941 GBP
View
Price last confirmed 20 days ago
Most Expensive
C
The Diamond Guys
1980423639 · Oct 30
$1,210 USD
View
10 more retailers have this diamond
Prices start from $898 USDSave up to $312 USD

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
$898 USD