CaratHunter
Plans
Cushion|Lab Grown|IGI

4.50ct G SI1 Cushion Lab Grown Diamond

VG • G/SI1 • IGI LG811636021

Shape and cutting style on the report: Antique cushion cut

Certificate IGI LG811636021

Diamond specifications and retailer prices

From €913 EUR
$1,020 USD
As of October 31, 2026
Save €2,374 EUR (72%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: €3,287 EUR at Taylor and Hart · As of October 31, 2026
View at Taylor and Hart

About this 4.5ct lab-grown cushion diamond

This 4.5ct lab-grown cushion sits in the three to five carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG811636021 or 811636021. Listed at 9 retailers as of October 31, 2026, with prices from €913 to €3,287, a €2,374 spread on the same certified stone. Taylor and Hart lists it at €3,287. 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

4.50
Carat
G
Color
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.5°
Pavilion angle38.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG811636021
Dimensions11.76 × 8.54 × 5.47 mm
L/W Ratio1.38
Girdle conditionFaceted
Culet sizeLarge
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.76 mm8.54 mm4.50 ctG / SI1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG811636021
Side View
Table 54.0%Crown 36.5°Girdle: STK-THKPavilion 38.3°Culet: LargeDepth 64.1%

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 31
Current: €1,456 EUR|Low: €913 EUR|High: €3,287 EUR|Avg: €2,164 EUR|-1.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Taylor and Hart
November 1, 2026
Retailer 7€913 EUR
Retailer 2€1,101 EUR
Retailer 6€1,353 EUR
Retailer 1€1,456 EUR
Retailer 4€2,104 EUR
Retailer 5€2,779 EUR
Retailer 8€3,175 EUR
Retailer 3€3,225 EUR
Taylor and Hart€3,287 EUR

27 data points across 9 retailers

9 retailers€913 EUR to €3,287 EUR

A
Cheapest Retailer
-
€913 EUR
$1,020 USD
Final sale: no returns
B+
Retailer 2
-
€1,101 EUR
$1,230 USD
View
B+
Retailer 3
-
€1,353 EUR
$1,512 USD
View
B+
Retailer 4
-
€1,456 EUR
£1,281 GBP
View
B
Retailer 5
-
€2,104 EUR
$2,351 USD
View
B
Retailer 6
-
€2,779 EUR
$3,105 USD
View
B
Retailer 7
-
€3,175 EUR
SGD 4,794 SGD
View
B
Retailer 8
-
€3,225 EUR
£2,837 GBP
View
Most Expensive
B
Taylor and Hart
E8F42E0 · Oct 31
€3,287 EUR
$3,673 USD
View
8 more retailers have this diamond
Prices start from €913 EURSave up to €2,374 EUR

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
4.50ct Cushion
€913 EUR