CaratHunter
Plans
Cushion|Lab Grown|IGI

1.00ct F SI1 Cushion Lab Grown Diamond

ID • F/SI1 • IGI LG688502761

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG688502761

Diamond specifications and retailer prices

From $207 USD
As of November 1, 2026
Save $979 USD (83%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $1,870 USD at Do Amore Diamonds · As of November 2, 2026
View at Do Amore Diamonds

About this 1ct lab-grown cushion diamond

This 1ct lab-grown cushion sits in the classic one-carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG688502761 or 688502761. Listed at 12 retailers as of November 1, 2026, with a 473% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

1.00
Carat
F
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.5°
Pavilion angle37.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG688502761
Dimensions5.88 × 5.70 × 3.70 mm
L/W Ratio1.03
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
5.88 mm5.70 mm1.00 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG688502761
Side View
Table 63.0%Crown 37.5°Girdle: STK-THKPavilion 37.5°Culet: NoneDepth 64.9%

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: Nov 1
Current: $1,870 USD|Low: $207 USD|High: $1,870 USD|Avg: $717 USD
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 2, 2026
Retailer 7$207 USD
Retailer 8$310 USD
Retailer 2$329 USD
Retailer 6$335 USD
Retailer 3$467 USD
Retailer 5$880 USD
Retailer 4$1,186 USD
Do Amore Diamonds$1,870 USD

41 data points across 8 retailers

12 retailers$207 USD to $1,186 USD

A
Cheapest Retailer
-
$207 USD
Final sale: no returns
A
Retailer 2
-
$239 USD
View
A
Retailer 3
-
$310 USD
View
A
Retailer 4
-
$329 USD
£259 GBP
View
A
Retailer 5
-
$335 USD
View
B+
Retailer 6
-
$467 USD
£368 GBP
View
B
Retailer 7
-
$880 USD
View
B
Retailer 8
-
$988 USD
View
B
Retailer 9
-
$1,148 USD
View
B
Retailer 10
-
$1,186 USD
£934 GBP
View
Retailer 11
-
$1,780 USD
View
Price under review
Most Expensive
Do Amore Diamonds
23-688502761 · Nov 2
$1,870 USD
View
Price under review
11 more retailers have this diamond
Prices start from $207 USDSave up to $979 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
1.00ct Cushion
$207 USD