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Cushion|Lab Grown|IGI

1.70ct D SI1 Cushion Lab Grown Diamond

ID • D/SI1 • IGI LG526280098

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG526280098

Diamond specifications and retailer prices

From $320 USD
As of October 30, 2026
Save $1,730 USD (84%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $2,050 USD at Do Amore Diamonds · As of October 31, 2026
View at Do Amore Diamonds

About this 1.7ct lab-grown cushion diamond

This 1.7ct lab-grown cushion 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 LG526280098 or 526280098. Listed at 10 retailers as of October 30, 2026, with prices from $320 to $2,050, a $1,730 spread on the same certified stone. Do Amore Diamonds lists it at $2,050. 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 angle36.5°
Pavilion angle37.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG526280098
Dimensions7.80 × 6.55 × 4.33 mm
L/W Ratio1.19
Girdle conditionFaceted
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
7.80 mm6.55 mm1.70 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG526280098
Side View
Table 60.0%Crown 36.5°Girdle: MED-THKPavilion 37.2°Culet: NoneDepth 66.1%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: $2,050 USD|Low: $164 USD|High: $2,400 USD|Avg: $825 USD|-1.0%
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
October 31, 2026
Retailer 4$164 USD
Retailer 11$320 USD
Retailer 12$357 USD
Retailer 10$392 USD
Retailer 2$468 USD
Retailer 8$483 USD
Retailer 9$606 USD
Retailer 7$938 USD
Retailer 3$1,150 USD
Retailer 5$1,173 USD
Retailer 6$1,850 USD
Do Amore Diamonds$2,050 USD

23 data points across 12 retailers

10 retailers$320 USD to $2,050 USD

A
Cheapest Retailer
-
$320 USD
B+
Retailer 2
-
$357 USD
View
A
Retailer 3
-
$392 USD
View
A
Retailer 4
-
$468 USD
€446 EUR
View
A
Retailer 5
-
$483 USD
View
A
Retailer 6
-
$606 USD
View
B+
Retailer 7
-
$938 USD
View
B
Retailer 8
-
$1,173 USD
£924 GBP
View
B
Retailer 9
-
$1,850 USD
View
Most Expensive
B
Do Amore Diamonds
27-5F90261FA · Oct 31
$2,050 USD
View
9 more retailers have this diamond
Prices start from $320 USDSave up to $1,730 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 Cushion
$320 USD