Oval|Lab Grown|IGI

12.83ct F SI1 Oval Lab Grown Diamond

ID • F/SI1 • IGI LG573313066

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG573313066

Diamond specifications and retailer prices

From €1,846 EUR

£1,631 GBP

As of October 27, 2026

Save €14,657 EUR (89%) vs most expensive(unlock to see where)

12 retailers carry this diamond

Most expensive: €16,503 EUR at Brilliant Earth · As of October 31, 2026

View at Brilliant Earth

About this 12.83ct lab-grown oval diamond

This 12.83ct lab-grown oval sits in the over five carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG573313066 or 573313066. Listed at 12 retailers as of October 27, 2026, with prices from €1,846 to €16,503, a €14,657 spread on the same certified stone. Brilliant Earth lists it at €16,503. 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

12.83

Carat

Colour

SI1

Clarity

Ideal

Cut

Specifications

CutIdeal

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle36.4°

Pavilion angle40.7°

OriginLab Grown

Grading LabIGI

CertificateIGI LG573313066

Dimensions19.20 × 13.12 × 8.20 mm

L/W Ratio1.46

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

View IGI Report →View Loupe360 Video →

Top View

OriginLab Grown

CutIdeal

PolishExcellent

SymmetryExcellent

FluorescenceNone

CertificateIGI LG573313066

Side View

Caratlytics Score

How it works →

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 27

Current: €17,912 EUR|Low: €1,846 EUR|High: €20,392 EUR|Avg: €9,659 EUR

Brilliant Earth

Retailer 2

Retailer 3

Retailer 4

Retailer 5

Retailer 6

Retailer 7

Retailer 8

Retailer 9

Retailer 10

Retailer 11

Retailer 12

Retailer 13

Retailer 14

Retailer 15

Retailer 16

Retailer 17

Retailer 18

November 1, 2026

Retailer 16€1,846 EUR

Retailer 12€2,603 EUR

Retailer 17€3,277 EUR

Retailer 7€3,583 EUR

Retailer 11€3,849 EUR

Retailer 13€3,949 EUR

Retailer 6€3,952 EUR

Retailer 5€4,727 EUR

Retailer 2€5,287 EUR

Retailer 4€5,710 EUR

Retailer 18€7,823 EUR

Retailer 14€10,012 EUR

Retailer 3€11,073 EUR

Retailer 15€12,313 EUR

Brilliant Earth€17,912 EUR

Retailer 8€18,866 EUR

Retailer 10€18,866 EUR

Retailer 9€20,392 EUR

11 data points across 18 retailers

12 retailers€1,846 EUR to €16,503 EUR

Cheapest Retailer

€1,846 EUR

£1,631 GBP

Retailer 2

€2,603 EUR

$2,919 USD

View

B+

Retailer 3

€3,277 EUR

$3,675 USD

View

Retailer 4

€3,849 EUR

£3,399 GBP

View

Retailer 5

€3,949 EUR

$4,429 USD

View

Retailer 6

€5,287 EUR

$5,930 USD

View

Retailer 7

€5,710 EUR

$6,404 USD

View

Retailer 8

€7,823 EUR

$8,774 USD

View

Retailer 9

€10,012 EUR

$11,230 USD

View

Retailer 10

€11,073 EUR

$12,419 USD

View

Retailer 11

€12,313 EUR

$13,810 USD

View

Most Expensive

Brilliant Earth

22301618A · Oct 31

€16,503 EUR

$18,510 USD

View

11 more retailers have this diamond

Prices start from €1,846 EURSave up to €14,657 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.

Similar diamonds

12.83ct Oval

€1,846 EUR