Cushion|Lab Grown|IGI

1.70ct D SI1 Cushion Lab Grown Diamond

VG • D/SI1 • IGI LG12380810

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG12380810

Diamond specifications and retailer prices

From $250 USD
As of October 31, 2026
Save $1,870 USD (88%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $2,120 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 very-good cut grade and certified by IGI LG12380810 or 12380810. Listed at 6 retailers as of October 31, 2026, with prices from $250 to $2,120, a $1,870 spread on the same certified stone. Do Amore Diamonds lists it at $2,120. 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
D
Color
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle33.5°
Pavilion angle35.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG12380810
Dimensions6.84 × 6.49 × 4.49 mm
L/W Ratio1.05
Culet sizePointed
Cert comments
As Grown - No indications of post-growth treatment. This Laboratory Grown Diamond was created by High Pressure High Tempertature (HPHT) growth process.
Top View
6.84 mm6.49 mm1.70 ctD / SI1
OriginLab Grown
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI LG12380810
Side View
Table 57.0%Crown 33.5°Girdle: STK-UNDPavilion 35.7°Culet: NoneDepth 69.2%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 31
Current: $2,120 USD|Low: $156 USD|High: $2,140 USD|Avg: $932 USD|+7.1%
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 29, 2026
Retailer 4$250 USD
Retailer 3$468 USD
Retailer 8$517 USD
Retailer 7$587 USD
Retailer 6$661 USD
Retailer 10$767 USD
Retailer 2$1,217 USD
Retailer 9$1,260 USD
Retailer 5$1,510 USD
Do Amore Diamonds$2,120 USD

13 data points across 10 retailers

6 retailers$250 USD to $2,120 USD

A
Cheapest Retailer
-
$250 USD
Final sale: no returns
B+
Retailer 2
-
$468 USD
View
B
Retailer 3
-
$1,217 USD
£958 GBP
View
B
Retailer 4
-
$1,260 USD
View
B
Retailer 5
-
$1,510 USD
View
Most Expensive
B
Do Amore Diamonds
27-9906E570A · Oct 31
$2,120 USD
View
5 more retailers have this diamond
Prices start from $250 USDSave up to $1,870 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
$250 USD