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Princess|Lab Grown|IGI

1.70ct D SI1 Princess Lab Grown Diamond

ID • D/SI1 • IGI LG789629098

Shape and cutting style on the report: Princess cut

Certificate IGI LG789629098

Diamond specifications and retailer prices

From $323 USD
As of October 30, 2026
Save $1,997 USD (86%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $2,320 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 D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG789629098 or 789629098. Listed at 17 retailers as of October 29, 2026, with prices from $323 to $2,320, a $1,997 spread on the same certified stone. Brilliant Earth lists it at $2,320. 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

1.70
Carat
D
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle44.4°
Pavilion angle38.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG789629098
Dimensions6.55 × 6.48 × 4.62 mm
L/W Ratio1.01
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.55 mm6.48 mm1.70 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG789629098
Side View
Table 71.0%Crown 44.4°Girdle: MediumPavilion 38.5°Culet: NoneDepth 71.3%

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 30
Current: $2,320 USD|Low: $310 USD|High: $2,680 USD|Avg: $850 USD
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
October 30, 2026
Retailer 14$323 USD
Retailer 16$361 USD
Retailer 7$375 USD
Retailer 5$401 USD
Retailer 17$401 USD
Retailer 2$447 USD
Retailer 11$555 USD
Retailer 6$645 USD
Retailer 3$651 USD
Retailer 8$666 USD
Retailer 10$716 USD
Retailer 13$1,175 USD
Retailer 4$1,288 USD
Retailer 9$1,333 USD
Retailer 15$1,587 USD
Retailer 12$1,614 USD
Brilliant Earth$2,320 USD

44 data points across 17 retailers

17 retailers$323 USD to $2,320 USD

A
Cheapest Retailer
-
$323 USD
A
Retailer 2
-
$361 USD
View
Final sale: no returns
A
Retailer 3
-
$375 USD
View
A
Retailer 4
-
$401 USD
View
A
Retailer 5
-
$401 USD
View
A
Retailer 6
-
$447 USD
£352 GBP
View
A
Retailer 7
-
$555 USD
View
B+
Retailer 8
-
$645 USD
View
B+
Retailer 9
-
$651 USD
View
B+
Retailer 10
-
$666 USD
View
B+
Retailer 11
-
$716 USD
£564 GBP
View
B
Retailer 12
-
$1,175 USD
View
B
Retailer 13
-
$1,288 USD
View
B
Retailer 14
-
$1,333 USD
View
B
Retailer 15
-
$1,587 USD
View
B
Retailer 16
-
$1,614 USD
£1,271 GBP
View
Most Expensive
B
Brilliant Earth
18790708A · Oct 29
$2,320 USD
View
16 more retailers have this diamond
Prices start from $323 USDSave up to $1,997 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
$323 USD