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Cushion|Lab Grown|IGI

1.70ct G SI1 Cushion Lab Grown Diamond

GD • G/SI1 • IGI LG478103526

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG478103526

Diamond specifications and retailer prices

From $391 USD
As of October 30, 2026
Save $1,312 USD (77%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $1,703 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 G colour (near-colourless) and SI1 clarity (slightly-included), with a standard cut grade and certified by IGI LG478103526 or 478103526. Listed at 12 retailers as of October 29, 2026, with prices from $391 to $1,703, a $1,312 spread on the same certified stone. MOH London lists it at $1,703. 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
G
Color
SI1
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.5°
Pavilion angle39.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG478103526
Dimensions7.13 × 6.69 × 4.59 mm
L/W Ratio1.07
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
7.13 mm6.69 mm1.70 ctG / SI1
OriginLab Grown
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG478103526
Side View
Table 59.5%Crown 36.5°Girdle: STK-THKPavilion 39.3°Culet: NoneDepth 68.6%

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: $1,703 USD|Low: $391 USD|High: $1,715 USD|Avg: $781 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
October 31, 2026
Retailer 7$391 USD
Retailer 10$433 USD
Retailer 9$474 USD
Retailer 5$556 USD
Retailer 3$635 USD
Retailer 4$635 USD
Retailer 11$696 USD
Retailer 6$697 USD
Retailer 2$779 USD
Retailer 8$1,671 USD
MOH London$1,703 USD

44 data points across 11 retailers

12 retailers$391 USD to $1,703 USD

A
Cheapest Retailer
-
$391 USD
Final sale: no returns
B+
Retailer 2
-
$433 USD
View
B+
Retailer 3
-
$474 USD
HK$3,700 HKD
View
B+
Retailer 4
-
$556 USD
£438 GBP
View
B+
Retailer 5
-
$635 USD
View
B+
Retailer 6
-
$635 USD
View
B+
Retailer 7
-
$696 USD
View
B+
Retailer 8
-
$697 USD
View
B+
Retailer 9
-
$779 USD
£614 GBP
View
B
Retailer 10
-
$1,435 USD
View
C
Retailer 11
-
$1,671 USD
View
Most Expensive
B
MOH London
LG478103526 · Oct 29
$1,703 USD
£1,341 GBP
View
11 more retailers have this diamond
Prices start from $391 USDSave up to $1,312 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
$391 USD