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Princess|Lab Grown|IGI

1.70ct E SI1 Princess Lab Grown Diamond

GD • E/SI1 • IGI LG528207701

Shape and cutting style on the report: Princess cut

Certificate IGI LG528207701

Diamond specifications and retailer prices

From $251 USD
As of October 27, 2026
Save $1,229 USD (83%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $1,480 USD at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 1.7ct lab-grown princess diamond

This 1.7ct lab-grown princess sits in the one-and-a-half to two carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a standard cut grade and certified by IGI LG528207701 or 528207701. Listed at 19 retailers as of October 27, 2026, with prices from $251 to $1,480, a $1,229 spread on the same certified stone. Brilliant Earth lists it at $1,480. 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

1.70
Carat
E
Color
SI1
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle44.1°
Pavilion angle37.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG528207701
Dimensions6.44 × 6.41 × 4.47 mm
L/W Ratio1.00
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
6.44 mm6.41 mm1.70 ctE / SI1
OriginLab Grown
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG528207701
Side View
Table 72.5%Crown 44.1°Girdle: Slightly ThickPavilion 37.3°Culet: NoneDepth 69.7%

Caratlytics Score

How it works →
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 27
Current: $1,480 USD|Low: $241 USD|High: $1,510 USD|Avg: $683 USD|-2.0%
Brilliant Earth
Retailer 2
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Retailer 19
October 29, 2026
Retailer 18$251 USD
Retailer 9$281 USD
Retailer 10$291 USD
Retailer 6$312 USD
Retailer 19$312 USD
Retailer 14$401 USD
Retailer 5$420 USD
Retailer 15$470 USD
Retailer 12$498 USD
Retailer 4$572 USD
Retailer 7$583 USD
Retailer 2$591 USD
Retailer 17$957 USD
Retailer 3$1,002 USD
Retailer 11$1,053 USD
Retailer 16$1,120 USD
Retailer 13$1,256 USD
Retailer 8$1,357 USD
Brilliant Earth$1,480 USD

39 data points across 19 retailers

19 retailers$251 USD to $1,480 USD

A
Cheapest Retailer
-
$251 USD
B+
Retailer 2
-
$281 USD
View
Final sale: no returns
B+
Retailer 3
-
$291 USD
View
B+
Retailer 4
-
$312 USD
View
B+
Retailer 5
-
$312 USD
View
B+
Retailer 6
-
$401 USD
£316 GBP
View
B+
Retailer 7
-
$420 USD
View
B+
Retailer 8
-
$470 USD
View
B+
Retailer 9
-
$498 USD
€474 EUR
View
B+
Retailer 10
-
$572 USD
View
B+
Retailer 11
-
$583 USD
View
B+
Retailer 12
-
$591 USD
£466 GBP
View
B
Retailer 13
-
$957 USD
View
B
Retailer 14
-
$1,002 USD
View
B
Retailer 15
-
$1,053 USD
View
B
Retailer 16
-
$1,120 USD
View
Price last confirmed 11 days ago
B
Retailer 17
-
$1,256 USD
£989 GBP
View
B
Retailer 18
-
$1,357 USD
View
Most Expensive
B
Brilliant Earth
16080965A · Oct 29
$1,480 USD
View
18 more retailers have this diamond
Prices start from $251 USDSave up to $1,229 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.

A
1.70ct Princess
$251 USD