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Cushion|Lab Grown|IGI

1.70ct D SI1 Cushion Lab Grown Diamond

VG • D/SI1 • IGI LG499114125

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG499114125

Diamond specifications and retailer prices

From $319 USD
As of October 30, 2026
Save $1,103 USD (78%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $1,422 USD at MOH London · As of October 29, 2026
View at MOH London

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 LG499114125 or 499114125. Listed at 11 retailers as of October 29, 2026, with prices from $319 to $1,422, a $1,103 spread on the same certified stone. MOH London lists it at $1,422. 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
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle34°
Pavilion angle38°
OriginLab Grown
Grading LabIGI
CertificateIGI LG499114125
Dimensions7.24 × 6.30 × 4.52 mm
L/W Ratio1.15
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
7.24 mm6.30 mm1.70 ctD / SI1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG499114125
Side View
Table 64.0%Crown 34°Girdle: STK-ETKPavilion 38°Culet: NoneDepth 71.7%

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: $1,422 USD|Low: $228 USD|High: $1,495 USD|Avg: $765 USD|+0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
October 30, 2026
Retailer 10$319 USD
Retailer 9$353 USD
Retailer 2$394 USD
Retailer 13$461 USD
Retailer 8$582 USD
Retailer 6$585 USD
Retailer 12$621 USD
Retailer 3$631 USD
Retailer 4$734 USD
Retailer 5$1,125 USD
Retailer 7$1,190 USD
Retailer 11$1,337 USD
MOH London$1,422 USD

33 data points across 13 retailers

11 retailers$319 USD to $1,422 USD

A
Cheapest Retailer
-
$319 USD
Final sale: no returns
A
Retailer 2
-
$353 USD
View
A
Retailer 3
-
$394 USD
£310 GBP
View
Retailer 4
-
$461 USD
HK$3,600 HKD
View
Price last confirmed 25 days ago
B+
Retailer 5
-
$582 USD
View
B+
Retailer 6
-
$585 USD
View
B+
Retailer 7
-
$621 USD
View
B+
Retailer 8
-
$631 USD
View
Retailer 9
-
$1,190 USD
View
Price last confirmed 10 days ago
Retailer 10
-
$1,337 USD
SGD 1,807 SGD
View
Price last confirmed 24 days ago
Most Expensive
B
MOH London
LG499114125 · Oct 29
$1,422 USD
£1,120 GBP
View
10 more retailers have this diamond
Prices start from $319 USDSave up to $1,103 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
$319 USD