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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 €289 EUR
$323 USD
As of October 30, 2026
Save €1,188 EUR (80%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: €1,477 EUR at Brilliant Earth · As of October 30, 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 30, 2026, with prices from €289 to €1,477, a €1,188 spread on the same certified stone. Brilliant Earth lists it at €1,477. 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

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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 30
Current: €1,477 EUR|Low: €277 EUR|High: €2,399 EUR|Avg: €760 EUR|-28.9%
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 31, 2026
Retailer 14€289 EUR
Retailer 16€323 EUR
Retailer 7€336 EUR
Retailer 5€359 EUR
Retailer 17€359 EUR
Retailer 10€400 EUR
Retailer 11€497 EUR
Retailer 6€577 EUR
Retailer 3€583 EUR
Retailer 8€596 EUR
Retailer 2€636 EUR
Retailer 13€1,052 EUR
Retailer 4€1,153 EUR
Retailer 9€1,193 EUR
Retailer 15€1,420 EUR
Retailer 12€1,445 EUR
Brilliant Earth€1,477 EUR

43 data points across 17 retailers

17 retailers€289 EUR to €1,477 EUR

A
Cheapest Retailer
-
€289 EUR
$323 USD
A
Retailer 2
-
€323 EUR
$361 USD
View
Final sale: no returns
A
Retailer 3
-
€336 EUR
$375 USD
View
A
Retailer 4
-
€359 EUR
$401 USD
View
A
Retailer 5
-
€359 EUR
$401 USD
View
A
Retailer 6
-
€400 EUR
£352 GBP
View
A
Retailer 7
-
€497 EUR
$555 USD
View
B+
Retailer 8
-
€577 EUR
$645 USD
View
B+
Retailer 9
-
€583 EUR
$651 USD
View
B+
Retailer 10
-
€596 EUR
$666 USD
View
B+
Retailer 11
-
€636 EUR
£559 GBP
View
B
Retailer 12
-
€1,052 EUR
$1,175 USD
View
B
Retailer 13
-
€1,153 EUR
$1,288 USD
View
B
Retailer 14
-
€1,193 EUR
$1,333 USD
View
B
Retailer 15
-
€1,420 EUR
$1,587 USD
View
B
Retailer 16
-
€1,445 EUR
£1,271 GBP
View
Most Expensive
B
Brilliant Earth
18790708A · Oct 30
€1,477 EUR
$1,650 USD
View
16 more retailers have this diamond
Prices start from €289 EURSave up to €1,188 EUR

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
€289 EUR